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Test Demo » The SIP School Translation Project

The SIP School
Translate Project 0.1 beta

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SSCA Exam

Which of the following SIP URI addresses are valid?
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http:bill@support-com.com
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sip:lynda@28.13.4.2
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sip:graham@vocaletraining.com
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phone:graham@vocaletraining.com;user=phone
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sip:+1-444-232-2233@22.123.24.212
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Select the main characteristics of a SIP LOCATION Server
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It's database is built by receiving updates from the REGISTRAR Server
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It Requires Active Directory to work
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It can Utilize external Databases such as DNS to help 'find' other SIP devices and users
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The LOCATION service usually Co-exists on the same server as the REGISTRAR Service
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A SIP PROXY Server will always relay Media as well as SIP messages on behalf of a SIP UAC
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False
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True
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It is the SIP User Agent Server (UAS) that initiates a SIP call
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False
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True
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At what TCP/IP Layer would you find the SIP Protocol?
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1 - Link and Physical
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3 - Network
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5 - Application
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4 - Transport
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Which Response code means that the 'Called' SIP device has 'Moved Temporarily'?
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202
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486
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408
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301
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302
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The 'VIA' element of a SIP message can be found in the SDP body
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True
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False
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A SIP device needs to send SDP elements in order to negotiate the codec to use with the 'Called' SIP device
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False
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True
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Which of these SDP elements is advertising that the SIP device supports VoIP compression?
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a=rtpmap:18 g729/8000
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a=rtpmap:3 gsm/8000
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a=rtpmap:8 pcmu/8000
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a=rtpmap:0 pcmu/8000
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Sequential SIP 'Call Forking' will call all of your SIP Registered devices 'in order' until one is answered
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True
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False
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What kind of server is required to allow SIP calls to be connected to the PSTN?
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PROXY
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ROUTER
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GATEWAY
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REGISTRAR
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DNS
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LOCATION
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What does B2BUA stand for?
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Back to Back User Agent
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Business to Business User Agent
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Billing to Business User Agent
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Back to Business User Agent
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If you move your SIP Device from your Home to your Office - it does not have to Re-Register as the REGISTRAR server will be able to locate it using DNS
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True
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False
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A SIP 'BYE' Message is comparable to an ISUP _________ Message... > Please select the missing word.
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IAM
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ANM
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RLC
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REL
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Early Media is required in order to prevent Voice 'Clipping'
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False
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True
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Which SIP method is used for carrying 'in-call' ISUP signalling across an IP network?
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NOTIFY
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GATEWAY
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B-NOTIFY
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INFO
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'SIP Bridging' refers to:
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A Call from the PSTN to a SIP Device
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A Call from a SIP device the PSTN
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The Connection of a Call from a H.323 Network to a SIP based network
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A Call between PSTN devices where the call 'crosses' a SIP based network
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A SIP Trunk needs to operate across a TDM link to the ITSP for transporting Media such as Voice and/or Video
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False
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True
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1 x SIP Trunk equates to 1 x DSL 'line' to the ITSP
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True
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False
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Which Codecs have a MOS (Mean Opinion Score) of 4.3?
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G.729a
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G.711ALaw
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iLBC
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G.722
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RTP Stands for the 'Reliable Transport Protocol'
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False
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True
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What kind of information would RTCP generate on a network?
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Sender Report
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RTP Collision information
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Application specific functions for a RTP session
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SIP Messaging logs
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Which is the 802 specification for VLANs?
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802.1P
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802.3af
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802.1Q
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802.3at
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Layer 2 Classification is something Routers will use to prioritize VoIP packets across a WAN link
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False
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True
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How many bits can be used with a Layer 3 DSCP?
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8
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6
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46
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5
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3
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What is the 'Default' port for SIP Messaging?
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53
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80
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5060
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Dynamic
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Which is the port number that the SIP device wants to receive RTP packets on according to this element in the SDP body? > audio 20016 RTP/AVP 0 8 18 96
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8
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20016
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0
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18
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96
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RTP carries Video across TCP to guarantee delivery
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False
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True
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If a SIP PROXY requires account details from a SIP UA, what does it return to the UA after the initial INVITE is sent to the PROXY.
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488 Not Acceptable Here
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407 Authentication Required
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401 Unauthorized
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403 Forbidden
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MD5 is a 'Hashing' Algorithm used during the Authentication process between a SIP UA and SIP SERVER
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False
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True
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A 'Certificate' includes a copy of the Secure Server's own Public Key
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False
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True
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Which port is the 'Secure' port on a Server supporting HTTPS?
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43
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443
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80
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83
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If a PROXY Server in the path of a SIP call that requires TLS security does not support TLS, what happens to the call?
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The Call will not be established
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The Call is setup using TLS except for the PROXY in question
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The Call is setup but signalling will be unencrypted
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SRTP requires a PKI in order to work
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False
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True
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A Non-SIP 'Aware' Firewall will block incoming traffic to port 5060 by default
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False
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True
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A NAT device is used to translate 'private' or internal IP address to 'public' or external IP addresses
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False
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True
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If NAT stands for 'Network Address Translation', what does NAPT stand for?
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Network Address and Priority Translation
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Network Address and Protocol Translation
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Network Address and P-Asserted Translation
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Network Address and Port Translation
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Which 'type' of NAT will STUN 'not' work across
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Restricted Cone
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Full Cone
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Port Restricted Cone
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Symmetric
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What is the International Numbering plan for public Telephone Systems?
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802.1E
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H.323
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E.164
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X.501
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What is the maximum number of Digits allowable in an E.164 Telephone number?
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15
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11
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9
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16
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What does ENUM stand for?
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TElephone Number Mapping
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Enhanced NUMberering plan for the ITU
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Electronic NUMbers
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External NUMbering for SIP Trunking
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What 'type' of DNS record is used to contain Address of Record (AOR) information?
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NAPTR
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HOST
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INFO
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MX
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CNAME
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What SERVER at the company Voip-com would the following DNS record be pointing to? _sip._udp.voip-com.net
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Its FIREWALL
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Its REGISTRAR Server
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Its SIP PROXY Server
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Its LOCATION Server
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What 'level' Registrar will a Person contact to register their AOR details?
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TIER 1
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TIER 0
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TIER 2
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The Root
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SIP Trunks can be purchased from an ITSP in blocks of
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You decide
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2
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24
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30
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A SIP Trunk needs to operate across a TDM link to the ITSP for transporting Media such as Voice and/or Video
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True
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False
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The 'P-Asserted Identity' field is held within the SDP body of an INVITE message
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False
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True
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The 'P-Asserted Identity' field will provide...
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The Caller ID for Authentication purposes on the Registrar Server
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The Caller ID for passing onto 'Called' devices outside of the 'private' network
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The Caller ID for use within the ITSP 'private' network
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SIP Peering only works across the Public Internet
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False
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True
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What 'Session Attribute' value is sent when a Calling device wants to put the other party on hold?
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silence
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holdonly
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sendonly
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reconly
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Calls from your SIP device via your ITSP may be blocked to PSTN devices because
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The ITSP requires you to have a separate SIP2PSTN account on your SIP device
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You haven't paid the ITSP to route calls to the PSTN
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SIP to PSTN calls require SIP Version 2.1 to be installed on your SIP device
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You cannot call the PSTN from a 'pure' SIP device
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If you type an Incorrect Logon or Password into your SIP client configuration - which response would you get back from the Registrar?
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406 Not Acceptable
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400 Bad Request
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401 Unauthorized
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404 Not Found
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Setting the Codec type to G.711 may get rid of '488 Not Acceptable Here' responses from the ITSP
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True
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False
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If your SIP client sends a SIP Message containing a 'Method' that the SIP Server does not understand - What response will be returned
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500 Internal Server Error
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513 Message Too Large
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505 Version Not Supported
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501 Not Implemented
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MARTINI is an IETF working group
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Yes
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No
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Select all that are SIP Request Methods...
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DNS LOOKUP
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UPDATE
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200 OK
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REGISTER
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CANCEL
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INVITE
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After a successful REGISTRATION of SIP details with a REGISTRAR server, What code number that means 'all is OK' should the SIP User Agent expect to receive?
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200
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183
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1xx
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601
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SIP Stands for,
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Session Initiation Protocol
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Signalling Initiation Protocol
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Session Invitation Protocol
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Signalling Invitation Protocol
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Which SIP Response code 'Category' corresponds to 'CLIENT FAILURE'?
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1xx
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2xx
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3xx
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4xx
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5xx
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6xx
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In a SIP Response, which elements from the 'initial' SIP message are copied?
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PROXY
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FROM
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TO
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User-Agent
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VIA
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Based on information in RFC 2543, when a call is placed on 'Hold', what will the 'c' parameter within the SDP body change to?
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The Senders IP address
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255.255.255.255
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The SIP Proxy IP address
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0.0.0.0
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It doesn't change at all
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Which of the following location details will a SIP device use first in order to get Request message to another SIP device?
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CONTACT
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VIA
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ROUTE
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TO
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TRIP stands for
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Telecom Routing Information Protocol
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Telephone Reliability over IP
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TRansmittance of IP
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Telephone Routing over IP
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One role of a PSTN Gateway can be to provide Signalling and Media translation services between SIP and the PSTN
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True
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False
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Which SIP Method in this list 'matches' the ISUP counterpart of ACM [Alerting]
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181 [Forwarding]
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INVITE
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BYE
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180 [Ringing]
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200 [Response to IAM]
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DTMF signalling messages can be carried within a SIP INFO message
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False
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True
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Which Signalling protocol (if the phones support it) would allow an Avaya IP Phone to communicate with a Mitel PBX?
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SCCP
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H.323
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SIP
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MiNET
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TCP
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Packets carrying 'actual' voice segments are transported using UDP over IP
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True
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False
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For a single voice connection RTP and RTCP share the same UDP Port number
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True
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False
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Select 'some' of the causes of Jitter
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Over utilized LAN Switch Trunking ports
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VLAN Implementation
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Router queues not coping with the amount of traffic
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Poor cabling
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SRTP is used to secure Video and Voice media
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True
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False
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Using TLS will ensure that both Voice and Signalling are encrypted
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True
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False
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Which 'element' in the SDP Body of a SIP Message is used for carrying the encryption key for SRTP?
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k
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c
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t
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e
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v
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S/MIME cannot be used for encryption with the SDP Body as it is only useful when encrypting Emails
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True
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False
  • Or provide a new one...
A 'STUN' SERVER assists the SIP UA in finding the correct details to put into the SIP message SDP Body. What are these details? > Choose 2 answers.
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The IP Address of the PSTN GATEWAY
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An External Port Number
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An External Protocol Number
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The IP Address of the STUN Server
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An External IP Address
  • Or provide a new one...
Symmetric RTP uses the same port for media as for SIP signalling, thus ignoring the port settings in the SDP Body
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
What service does an 'ICE' capable SIP UAC start in order to assist 'Called' SIP devices get signalling and media back to it?
  • Or provide a new one...
Local STUN Service
  • Or provide a new one...
Local NAT Service
  • Or provide a new one...
Local TLS Service
  • Or provide a new one...
Local Media Proxy Service
  • Or provide a new one...
A Session Border Controller (SBC) is good because usually?
  • Or provide a new one...
It can help 'hide' IP addressing schemes
  • Or provide a new one...
It can prevent SPAM
  • Or provide a new one...
It can apply QoS rules to Traffic
  • Or provide a new one...
It can prevent Virus attacks
  • Or provide a new one...
It can act as a PROXY
  • Or provide a new one...
When using a SIPS address and subsequently requesting a secure session, which protocol combination would be used?
  • Or provide a new one...
TLS/UDP/IP
  • Or provide a new one...
TLS/TCP/IP
  • Or provide a new one...
TLS/IP
  • Or provide a new one...
What is the name of the E164 domain (defined by the ITU and IETF) for ENUM queries?
  • Or provide a new one...
E164.itu
  • Or provide a new one...
E164.arpa
  • Or provide a new one...
E164.info
  • Or provide a new one...
E164.com
  • Or provide a new one...
E164.org
  • Or provide a new one...
RIPE controls country 'Registrars' at the TIER 0 level
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
What is the Format of the ENUM query sent to the DNS server for the Telephone number +441216679182 ?
  • Or provide a new one...
441216679182.e164.arpa
  • Or provide a new one...
281976612144.e164.arpa
  • Or provide a new one...
4.4.1.2.1.6.6.7.9.1.8.2.e164.arpa
  • Or provide a new one...
2.8.1.9.7.6.6.1.2.1.4.4.e164.arpa
  • Or provide a new one...
What is SIPconnect?
  • Or provide a new one...
A Recommendation for PBX and ITSP interoperability
  • Or provide a new one...
The State of the SIP Trunk after the first Registration message has been accepted
  • Or provide a new one...
An RFC for connectivity of SIP Trunks
  • Or provide a new one...
The name of the SIP Trunk to the ITSP
  • Or provide a new one...
Select the 'often mentioned' potential benefits of SIP Trunking - click 'all' that apply
  • Or provide a new one...
Can support Video, IM and Presence as well as Voice
  • Or provide a new one...
Possibly 'No costs' for SIP Trunk calls between two branch offices
  • Or provide a new one...
Eliminate BRI and PRI subscriptions
  • Or provide a new one...
Big cost savings on calls
  • Or provide a new one...
Easy to Add more trunks when required
  • Or provide a new one...
If your SIP device is not Registering, what should you check?
  • Or provide a new one...
If a Firewall is 'blocking' SIP Signaling
  • Or provide a new one...
If Account ID's and Passwords are spelt correctly
  • Or provide a new one...
If the REGISTRAR server is 'off line'
  • Or provide a new one...
If you call a remote SIP device but no Audio is heard, what is the 'most likely' problem?
  • Or provide a new one...
The Firewall is blocking RTP traffic
  • Or provide a new one...
The Codecs are mis-matched
  • Or provide a new one...
You are connecting to the wrong SIP Proxy
  • Or provide a new one...
The Firewall is blocking SIP Signaling
  • Or provide a new one...
If your Softphone is running on Windows (XP, Vista, 7 or 8), the inbuilt Firewall must be disabled completely so that the Softphone can Register properly
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
'493 Undecipherable' means that the ITSP has detected a loop!
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
If a 'Called' party on a PSTN device is on an existing call and doesn't want to switch to a 'New' call, what response is sent to the 'New' Caller with a SIP device?
  • Or provide a new one...
606 Not Acceptable
  • Or provide a new one...
600 Busy Everywhere
  • Or provide a new one...
601 Call Cannot Be Taken
  • Or provide a new one...
603 Decline
  • Or provide a new one...
A 'call leg' defined in RFC 2543 is now referred to as a 'dialog' in RFC 3261
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
What did the IMPP working group define to help in the ongoing development of IM and Presence applications?
  • Or provide a new one...
CPP
  • Or provide a new one...
SIMPLE
  • Or provide a new one...
XML
  • Or provide a new one...
XPP
  • Or provide a new one...
XMPP
  • Or provide a new one...
Which 'two' of the following are protocol suites that allow IM and Presence applications to work?
  • Or provide a new one...
CPP
  • Or provide a new one...
SIMPLE
  • Or provide a new one...
XMPP
  • Or provide a new one...
HTML
  • Or provide a new one...
OCS
  • Or provide a new one...
Combining two elements will give a 'Presentity' - which are these two elements?
  • Or provide a new one...
Entity
  • Or provide a new one...
Presence
  • Or provide a new one...
Watcher
  • Or provide a new one...
IM Client
  • Or provide a new one...
Buddy
  • Or provide a new one...
If a person wants to 'watch' another persons 'Presence state', what SIP method will be sent initially to set up this person as a 'Watcher'?
  • Or provide a new one...
SUBSCRIBE
  • Or provide a new one...
PUBLISH
  • Or provide a new one...
INVITE
  • Or provide a new one...
WATCH
  • Or provide a new one...
INFO
  • Or provide a new one...
What SIP method is used when a Presentity wants to send it's state information to a Presence server?
  • Or provide a new one...
PUBLISH
  • Or provide a new one...
SUBSCRIBE
  • Or provide a new one...
INVITE
  • Or provide a new one...
PRESENCE
  • Or provide a new one...
COMET
  • Or provide a new one...
A 'Tuple' carries information that allows a watcher to determine what methods they can contact a 'Presentity' on
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
What is sent to an IM client (within a SIP message) to show that the other person in an 'IM conversation' is writing something?
  • Or provide a new one...
isWriting
  • Or provide a new one...
isTyping
  • Or provide a new one...
isComposing
  • Or provide a new one...
isDrinkingcoffee
  • Or provide a new one...
isReplying
  • Or provide a new one...
A _________ is created on a Conference server when a new conference is requested to be setup
  • Or provide a new one...
Focus
  • Or provide a new one...
Nucleus
  • Or provide a new one...
Hub
  • Or provide a new one...
Core
  • Or provide a new one...
Which two of these relate to a Conference Focus?
  • Or provide a new one...
It Hosts a SIP conference
  • Or provide a new one...
Only one Focus is allowed per Conference server
  • Or provide a new one...
It manages all of the Mixing of Audio and Video streams
  • Or provide a new one...
It has a unique SIP URI
  • Or provide a new one...
What SIP method is used to INITIATE a new Conference?
  • Or provide a new one...
SUBSCRIBE
  • Or provide a new one...
INITIATE
  • Or provide a new one...
INVITE
  • Or provide a new one...
REFER
  • Or provide a new one...
CONF
  • Or provide a new one...
What SIP method is used to inform colleagues of the SIP address of the Conference Focus so that they can join the conference?
  • Or provide a new one...
INVITE
  • Or provide a new one...
PUBLISH
  • Or provide a new one...
CONF
  • Or provide a new one...
MESSAGE
  • Or provide a new one...
REFER
  • Or provide a new one...
Which IM client uses XMPP?
  • Or provide a new one...
Skype
  • Or provide a new one...
Google Talk
  • Or provide a new one...
X-Lite
  • Or provide a new one...
Sightspeed
  • Or provide a new one...
Connecting a corporate Presence domain with a service such as AOL is known as 'Intra-domain Federation'
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
What is the SIP RFC Number for the document superseded by RFC 3261?
  • Or provide a new one...
2561
  • Or provide a new one...
2261
  • Or provide a new one...
3260
  • Or provide a new one...
2543
  • Or provide a new one...
What is SIP said to be 'modeled' after?
  • Or provide a new one...
VoiceXML
  • Or provide a new one...
XMPP
  • Or provide a new one...
HTML
  • Or provide a new one...
HTTP
  • Or provide a new one...
SIP 'sits' at a lower layer in the OSI (or TCP/IP) model than TCP
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
Could a SIP device be both a UAC and UAS? For example a SIP IP Phone
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
What is the SIP method used to end a session? For example: when a person 'ends' a call after a conversation is over
  • Or provide a new one...
BYE
  • Or provide a new one...
PRACK
  • Or provide a new one...
CANCEL
  • Or provide a new one...
ACK
  • Or provide a new one...
graham@vocaletraining.com can be a SIP URI. What does the 'I' stand for in URI?
  • Or provide a new one...
Indicator
  • Or provide a new one...
Initiator
  • Or provide a new one...
Information
  • Or provide a new one...
Identifier
  • Or provide a new one...
sip:+1-654-111-3487@vocaletraining.com;user=phone is a 'valid' SIP URI
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
Which 'Proxy type' - 'remembers' incoming and outgoing requests?
  • Or provide a new one...
Stateful
  • Or provide a new one...
Stateless
  • Or provide a new one...
Statelog
  • Or provide a new one...
Transactioning
  • Or provide a new one...
Which DHCP 'option' can deliver the Proxy IP address to a SIP device?
  • Or provide a new one...
120
  • Or provide a new one...
68
  • Or provide a new one...
None
  • Or provide a new one...
43
  • Or provide a new one...
3
  • Or provide a new one...
A Stateful Proxy 'forgets' all requests once they are processed
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
Can a single Proxy server 'assist' SIP devices on multiple subnets?
  • Or provide a new one...
YES
  • Or provide a new one...
NO
  • Or provide a new one...
What is the 'Response code' number that indicates a SIP device is RINGING?
  • Or provide a new one...
180
  • Or provide a new one...
200
  • Or provide a new one...
100
  • Or provide a new one...
320
  • Or provide a new one...
200 OK
  • Or provide a new one...
Which of these will assist a Location server build it's database of 'in-service' SIP devices?
  • Or provide a new one...
REGISTRATIONS
  • Or provide a new one...
SUBSCRIPTIONS
  • Or provide a new one...
INVITES
  • Or provide a new one...
LOCATE COMMANDS
  • Or provide a new one...
NAPTR QUERIES
  • Or provide a new one...
Which SIP method is used to 'initiate' a media session?
  • Or provide a new one...
SUBSCRIBE
  • Or provide a new one...
INVITE
  • Or provide a new one...
MESSAGE
  • Or provide a new one...
SESSION
  • Or provide a new one...
Which SIP method is used to respond to a 200OK response?
  • Or provide a new one...
ACK
  • Or provide a new one...
PRACK
  • Or provide a new one...
INFO
  • Or provide a new one...
200OK
  • Or provide a new one...
Which SIP method initiates the 'Binding' of a SIP UA's URI to an AOR?
  • Or provide a new one...
REGISTER
  • Or provide a new one...
NAPTR
  • Or provide a new one...
BIND
  • Or provide a new one...
SUBSCRIBE
  • Or provide a new one...
NOTIFY
  • Or provide a new one...
What SIP method can be used to tell people of an IM buddy's status change?
  • Or provide a new one...
NOTIFY
  • Or provide a new one...
INFO
  • Or provide a new one...
ACK
  • Or provide a new one...
REFER
  • Or provide a new one...
OPTIONS
  • Or provide a new one...
Which SIP method can be used to 'transfer' calls?
  • Or provide a new one...
SENDONLY
  • Or provide a new one...
NOTIFY
  • Or provide a new one...
INVITE
  • Or provide a new one...
REFER
  • Or provide a new one...
Which SIP method can assist in the transfer of Instant Messages?
  • Or provide a new one...
OPTION
  • Or provide a new one...
NOTIFY
  • Or provide a new one...
UPDATE
  • Or provide a new one...
MESSAGE
  • Or provide a new one...
INVITE
  • Or provide a new one...
Which 'Redirection' Response code indicates a SIP device has 'Moved Permanently'
  • Or provide a new one...
301
  • Or provide a new one...
302
  • Or provide a new one...
308
  • Or provide a new one...
Response code '403' indicates a request is forbidden
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
Response code '486' indicates a SIP device is 'Busy'
  • Or provide a new one...
YES
  • Or provide a new one...
NO
  • Or provide a new one...
If you see a 401 Unauthorized response - which server would be sending it?
  • Or provide a new one...
PROXY
  • Or provide a new one...
REGISTRAR
  • Or provide a new one...
A '503' Response code indicates a 'Bad Gateway'
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
What does the Response code '600' indicate?
  • Or provide a new one...
Busy Everywhere
  • Or provide a new one...
Decline
  • Or provide a new one...
Does not Exist
  • Or provide a new one...
Not Acceptable
  • Or provide a new one...
Which element of a SIP Header is identical for all requests / responses in the transaction?
  • Or provide a new one...
Max-Forwards
  • Or provide a new one...
Via
  • Or provide a new one...
Cseq
  • Or provide a new one...
Call-ID
  • Or provide a new one...
If the Max-Forwards value is decremented to '0' the SIP Message is discarded
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
The 'Session-Expires' timer can be 'refreshed' using which SIP method?
  • Or provide a new one...
Re-INVITE
  • Or provide a new one...
INFO
  • Or provide a new one...
UPDATE
  • Or provide a new one...
MESSAGE
  • Or provide a new one...
NOTIFY
  • Or provide a new one...
In a 200OK Response, the To: and From: values are 'switched around'
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
Whilst on a Voice conversation, the ____________ method can assist in the setup of Video to complement the conversation
  • Or provide a new one...
UPDATE
  • Or provide a new one...
OPTIONS
  • Or provide a new one...
SUBSCRIBE
  • Or provide a new one...
INFO
  • Or provide a new one...
If take a call 'off hold', what is the 'a' value of the SDP body set to prior to sending to the other party?
  • Or provide a new one...
sendrecv
  • Or provide a new one...
sendonly
  • Or provide a new one...
recvonly
  • Or provide a new one...
0.0.0.0
  • Or provide a new one...
SIP Call Forking in Parallel', will send SIP INVITES to all of your registered SIP devices at the same time when someone calls you
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
Branch IDs allow proxies to match responses to forked requests
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
What element should a SIP Proxy inspect to determine whether there is a loop?
  • Or provide a new one...
VIA
  • Or provide a new one...
Call-ID
  • Or provide a new one...
Record-Route
  • Or provide a new one...
To
  • Or provide a new one...
From
  • Or provide a new one...
Which would a SIP device 'utilize' first to send a Response (such as 180 Ringing) back to a 'calling' SIP device?
  • Or provide a new one...
Record-Route
  • Or provide a new one...
Contact
  • Or provide a new one...
From
  • Or provide a new one...
VIA
  • Or provide a new one...
What can help a SIP message 'carry' multiple 'SDP body parts'?
  • Or provide a new one...
S/MIME
  • Or provide a new one...
SDP 2.0
  • Or provide a new one...
SDPXML
  • Or provide a new one...
MIME
  • Or provide a new one...
If a SIP device calls a PSTN device and the SIP Response 404 is returned, what's the problem?
  • Or provide a new one...
Number is not allocated
  • Or provide a new one...
Number is busy
  • Or provide a new one...
Bad Gateway
  • Or provide a new one...
Call Rejected
  • Or provide a new one...
A Back to Back User Agent (B2BUA) will always 'proxy' the media as well as the SIP signalling
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
Which IETF group is responsible for work on Instant Messaging and Presence?
  • Or provide a new one...
SIPPING
  • Or provide a new one...
BLISS
  • Or provide a new one...
DRINKS
  • Or provide a new one...
SIGTRAN
  • Or provide a new one...
SIMPLE
  • Or provide a new one...
Which IETF group has defined the e164.arpa domain?
  • Or provide a new one...
ENUM
  • Or provide a new one...
BEHAVE
  • Or provide a new one...
BLISS
  • Or provide a new one...
P2PSIP
  • Or provide a new one...
SIPPING
  • Or provide a new one...
Which IETF group is defining 'Best Practice' documents relating to SIP working over NAT devices
  • Or provide a new one...
P2PSIP
  • Or provide a new one...
SIGTRAN
  • Or provide a new one...
DRINKS
  • Or provide a new one...
BEHAVE
  • Or provide a new one...
SIPPING
  • Or provide a new one...
Which service 'manages' ENUM/NAPTR records?
  • Or provide a new one...
DNS
  • Or provide a new one...
REGISTRAR
  • Or provide a new one...
PROXY
  • Or provide a new one...
LOCATION
  • Or provide a new one...
WEB
  • Or provide a new one...
What TIER would a registrar who has control of their country reside at?
  • Or provide a new one...
4
  • Or provide a new one...
3
  • Or provide a new one...
2
  • Or provide a new one...
1
  • Or provide a new one...
What TIER would a 'Private' company hosting their own 'internal' NAPTR records reside at?
  • Or provide a new one...
3
  • Or provide a new one...
2
  • Or provide a new one...
1
  • Or provide a new one...
4
  • Or provide a new one...
AOR stands for 'Address of Registrant'
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
The '+' sign in a Telephone number must be removed in order to continue with the ENUM query process
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
In a NAPTR record, E2U stands for E.164 to URL
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
If a SIP UA is 'ENUM capable' and configured to forward requests to a Proxy, it will leave the ENUM operation to the Proxy
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
e164.org is not a valid ENUM domain
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
Early Offer' relates to a SIP INVITE that includes an SDP body
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
A 'Delayed offer' will cause 'required' SDP information to be included in a 180 Ringing message
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
If you see a 407 error returned from a Proxy server to a SIP UA, what is the Proxy asking the SIP UA for?
  • Or provide a new one...
An 'Early Offer'
  • Or provide a new one...
Authentication
  • Or provide a new one...
Codec details
  • Or provide a new one...
A SIP URI
  • Or provide a new one...
A SIP 'Cancel' Message is comparable to an ISUP _________ Message... > Please select the missing word.
  • Or provide a new one...
Release
  • Or provide a new one...
Disconnect
  • Or provide a new one...
Bye
  • Or provide a new one...
Drop
  • Or provide a new one...
What does 'DTMF' stand for?
  • Or provide a new one...
Dialling Tone Multi Frequency
  • Or provide a new one...
Default Tone Multi Frequency
  • Or provide a new one...
Dial Tone Multi Frequency
  • Or provide a new one...
Dual Tone Multi Frequency
  • Or provide a new one...
Which RFC relates to transporting DTMF tones using SIP?
  • Or provide a new one...
RFC 2833
  • Or provide a new one...
RFC 3261
  • Or provide a new one...
RFC 2545
  • Or provide a new one...
RFC 2861
  • Or provide a new one...
DTMF tones may be lost/corrupted if using the 'Inband' Method of delivery along with the G.729 codec
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
'Out of band' RTP relates to RFC 2833
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
Which DTMF method (when used to carry DTMF tones) can Proxies actually 'see' the detail of the SIP message
  • Or provide a new one...
MESSAGE
  • Or provide a new one...
In-Band
  • Or provide a new one...
SIP INFO
  • Or provide a new one...
RFC 2833
  • Or provide a new one...
In which SIP 'response' packet would you find a 'nonce'?
  • Or provide a new one...
302
  • Or provide a new one...
180
  • Or provide a new one...
200
  • Or provide a new one...
407
  • Or provide a new one...
Which 'Hashing' algorithm produces Hash sizes of up to 512bits?
  • Or provide a new one...
SHA-2
  • Or provide a new one...
AES
  • Or provide a new one...
MD5
  • Or provide a new one...
SRTP
  • Or provide a new one...
Which encryption key is never sent across a network?
  • Or provide a new one...
A Servers 'Symmetric' key
  • Or provide a new one...
A Servers 'Public' key
  • Or provide a new one...
A Servers 'Key Pair' key
  • Or provide a new one...
A Servers 'Private' key
  • Or provide a new one...
What is the format type of a certificate issued by a CA?
  • Or provide a new one...
X.25
  • Or provide a new one...
X.500
  • Or provide a new one...
X.CA-5
  • Or provide a new one...
X.509
  • Or provide a new one...
TLS is used to secure SIP Signalling
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
SRTP can secure both SIP Signalling and media streams
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
TLS is used to secure SIP Signalling but it cannot secure the SDP element of a SIP message
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
Using a 'sips' URI will result in TCP not UDP being requested as the transport protocol for signalling
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
If a SIP IP Phone supports SRTP, conversations will always be encrypted
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
Which part of a SIP message does a Layer 3 NAT not 'alter' before forwarding out of a private network? (select all that apply)
  • Or provide a new one...
Call-ID
  • Or provide a new one...
TO
  • Or provide a new one...
FROM
  • Or provide a new one...
VIA
  • Or provide a new one...
A 'Media Proxy' re-writes the SDP RTP/AVP field to direct RTP traffic back to a preferred port on the Media Proxy Server
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
Can an ALG, NAT and Firewall all be 'the same device'?
  • Or provide a new one...
YES
  • Or provide a new one...
NO
  • Or provide a new one...
An SBC can implement Codec conversion such as G.711 to G.729 only if both codecs are also supported on an 'internal' corporate PBX
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
An SBC uses it's own 'public / external' IP address when Registering SIP details
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
Symmetric RTP' sends RTP back via a 'cached' port that worked for a previous call
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
A NAT can cause problems on a SIP network as it doesn't allows 'SIP NOTIFY' and 'SIP INFO' messages to travel across it
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
A SBC can prevent 'Virus' attacks
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
Which 'Transport Protocol' does not use 'Acknowledgements'?
  • Or provide a new one...
UDP
  • Or provide a new one...
TCP
  • Or provide a new one...
What element of an RTP packet can help determine if there is 'Packet loss' occurring?
  • Or provide a new one...
Padding
  • Or provide a new one...
Payload Type
  • Or provide a new one...
Marker
  • Or provide a new one...
Timestamp
  • Or provide a new one...
Sequence Number
  • Or provide a new one...
Which protocol can assist in assessing VoIP call quality and also diagnosing problems?
  • Or provide a new one...
802.3Q
  • Or provide a new one...
SDP 2.0
  • Or provide a new one...
RTCP-XR
  • Or provide a new one...
SIP INFO
  • Or provide a new one...
How many 'bits' in an IP datagram are used by DSCP for configuring QoS values?
  • Or provide a new one...
8
  • Or provide a new one...
0
  • Or provide a new one...
6
  • Or provide a new one...
3
  • Or provide a new one...
DSCP stands for 'Differentiated SIP Code Point'
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
Which codec will generate more 'network traffic' during a VoIP conversation?
  • Or provide a new one...
G.711
  • Or provide a new one...
G.729
  • Or provide a new one...
G.723.1
  • Or provide a new one...
iLBC
  • Or provide a new one...
Using DSCP values to manage voice across a network device (such as a Router) is known as Layer ____ Classification
  • Or provide a new one...
3
  • Or provide a new one...
2
  • Or provide a new one...
1
  • Or provide a new one...
4
  • Or provide a new one...
The default port for Secure SIP Signalling (using TLS) is also 5060
  • Or provide a new one...
TRUE
  • Or provide a new one...
FALSE
  • Or provide a new one...
P-Asserted information will be passed onto an ITSP that you have 'signed up' with even without TLS in place on the SIP trunk
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
P-Preferred allows a SIP UA to have the option to suggest which SIP URI should be used when populating the P-Asserted field
  • Or provide a new one...
FALSE
  • Or provide a new one...
TRUE
  • Or provide a new one...
What device would you need to implement to allow a non-SIP (or IP based) PBX to utilize SIP Trunking services from an ITSP?
  • Or provide a new one...
Media Gateway
  • Or provide a new one...
Media Switch
  • Or provide a new one...
Media Router
  • Or provide a new one...
Media NAT
  • Or provide a new one...
Once a VoIP call has been established, its session parameters can only be changed by ending and restarting the session with new parameters
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Once a session is established, can SIP facilitate the addition of another stream such as Video?
  • Or provide a new one...
Yes
  • Or provide a new one...
No
  • Or provide a new one...
A 're-INVITE' can … (select all that apply)
  • Or provide a new one...
Set up a call conference
  • Or provide a new one...
Put a call on hold
  • Or provide a new one...
Change address information
  • Or provide a new one...
Remove a stream
  • Or provide a new one...
The ‘Call hold’ attribute ‘sendonly’ is defined in RFC 2543
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
It’s possible that a SIP device can support ‘Call Hold’ attributes defined in ‘both’ RFC 2543 and 3264
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
Which ‘attribute’ when used by an endpoint could still allow the user of the endpoint to listen to ‘Music on hold’?
  • Or provide a new one...
Recvonly
  • Or provide a new one...
Sendonly
  • Or provide a new one...
Inactive
  • Or provide a new one...
RFC 4733 supersedes RFC 2833 for DTMF Transport method definition
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
DTMF tones and events can be carried in the SDP element of a SIP message
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
RFC 4733 defines that SIP devices have to support all DTMF tones and events that exist
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
RFC 4568 defines the ‘Crypto’ attribute for use in securing SIP signalling
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
You may find the following in the SDP element of a SIP message…. a=crypto:1
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
If a SIP message contains two a=crypto attributes, one for a video stream and one for the audio stream, the SIP devices will use the 1st valid attribute for both the Video and Audio Streams
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Select all Codecs from this list that would be 'considered' High Definition / Wideband?
  • Or provide a new one...
Speex
  • Or provide a new one...
G.729
  • Or provide a new one...
AMR-WB+
  • Or provide a new one...
SILK
  • Or provide a new one...
G.711
  • Or provide a new one...
Which is the 'value' that all Branch IDs (in the SIP Header) sent out from a SIP Server begin with?
  • Or provide a new one...
127.0.0.1
  • Or provide a new one...
z9hG4bk
  • Or provide a new one...
bid3261
  • Or provide a new one...
branch=on
  • Or provide a new one...
RFC 4474 relates to 'Caller Identity'
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
MPLS stands for Multi Protocol Line Switching
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
What is the Standard protocol that all G3 faxes support?
  • Or provide a new one...
T.30
  • Or provide a new one...
T.37
  • Or provide a new one...
T.38
  • Or provide a new one...
TR-29
  • Or provide a new one...
Which Fax tone informs a 'calling' fax the capabilities of the 'called' fax?
  • Or provide a new one...
DIS
  • Or provide a new one...
CNG
  • Or provide a new one...
TCF
  • Or provide a new one...
The initial Fax tones CNG and CED 'travel' at 300bps
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
V.21 is faster than V.17
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Which Fax protocol can you 'secure' using SRTP?
  • Or provide a new one...
T.38
  • Or provide a new one...
T.30
  • Or provide a new one...
G.711
  • Or provide a new one...
T.37 is the Fax protocol also known as 'Pass through'
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
UDPTL is used in conjunction with which Fax protocol?
  • Or provide a new one...
T.38
  • Or provide a new one...
G.711
  • Or provide a new one...
T.37
  • Or provide a new one...
If a Fax machine utilising V.34 tries to communicate with one using V.17 - what 'should' happen
  • Or provide a new one...
The connection should drop as it's never going to work
  • Or provide a new one...
The V.34 Fax should 'drop back' to V.17
  • Or provide a new one...
Both Faxes should re-negotiate and run at V.27ter
  • Or provide a new one...
Which Fibre technology acronym equates to 'Fibre all the way' to your residence?
  • Or provide a new one...
FTTT
  • Or provide a new one...
FTTH
  • Or provide a new one...
FTTC
  • Or provide a new one...
MPLS operates 'above' IP and actually 'resides' at layer 4
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
An LSR in a MPLS network is a
  • Or provide a new one...
Lable Switch Router
  • Or provide a new one...
Loaded SIP Router
  • Or provide a new one...
Listening Stack Router
  • Or provide a new one...
Leading Side Router
  • Or provide a new one...
What is the 'E' in an MPLS LER?
  • Or provide a new one...
Echo
  • Or provide a new one...
Entity
  • Or provide a new one...
Error
  • Or provide a new one...
Edge
  • Or provide a new one...
There is no central registry in a Multi-lateral VoIP Peering arrangement
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
e164.arpa is the only ENUM tree available
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Which two FAX protocols operate in Real - Time?
  • Or provide a new one...
T.37
  • Or provide a new one...
T.38
  • Or provide a new one...
G.711
  • Or provide a new one...
According to the ITU, what is the recommended one way, end to end delay for VoIP packets?
  • Or provide a new one...
Less than 150ms
  • Or provide a new one...
Less then 300ms
  • Or provide a new one...
Less than 80ms
  • Or provide a new one...
The V.34 protocol used when 'Faxing' can reach a maximum speed of
  • Or provide a new one...
33600bps
  • Or provide a new one...
9600bps
  • Or provide a new one...
14400bps
  • Or provide a new one...
2400bps
  • Or provide a new one...
'Loose Routing' is defined in RFC 2543
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
What is 'Naked DSL'?
  • Or provide a new one...
It is where broadband connectivity is provided but not 'enabled'
  • Or provide a new one...
It is where broadband connectivity is provided without any VoIP connectivity
  • Or provide a new one...
It is where broadband connectivity is provided without any PSTN connectivity
  • Or provide a new one...
If your ITSP sends '405 Method Not Allowed' when you attempt a 'Call transfer', which SIP Method is not supported at the ITSP?
  • Or provide a new one...
REGISTER
  • Or provide a new one...
CANCEL
  • Or provide a new one...
REFER
  • Or provide a new one...
INVITE
  • Or provide a new one...
When using the command line tool 'DIG', what does the SRV element mean in this example 'dig -t SRV _sip._udp.voipcom.com'?
  • Or provide a new one...
Service Record
  • Or provide a new one...
Server Record
  • Or provide a new one...
SIP Record
  • Or provide a new one...
Station Record
  • Or provide a new one...
The 'S' in MPLS stands for
  • Or provide a new one...
Switching
  • Or provide a new one...
Standard
  • Or provide a new one...
SIP
  • Or provide a new one...
Stack
  • Or provide a new one...
An IP phone may use which DHCP Option in order to register with a SIP server
  • Or provide a new one...
66
  • Or provide a new one...
120
  • Or provide a new one...
132
  • Or provide a new one...
133
  • Or provide a new one...
What is the recommended Session-Expires value (in seconds) from RFC 4028?
  • Or provide a new one...
3600
  • Or provide a new one...
180
  • Or provide a new one...
90
  • Or provide a new one...
1800
  • Or provide a new one...
What does the 'SE' stand for in the 'Min-SE' parameter you may see in a SIP header?
  • Or provide a new one...
Session Establishment
  • Or provide a new one...
Session Expires
  • Or provide a new one...
Session Extended
  • Or provide a new one...
Session Ends
  • Or provide a new one...
A SIP 'response' message such as 180 Ringing is acknowleged by default
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
What is added to the 'Supported Header' in order to show support for 'Provisional' responses?
  • Or provide a new one...
respond-required
  • Or provide a new one...
timer
  • Or provide a new one...
100rel
  • Or provide a new one...
replaces
  • Or provide a new one...
PRACK can be used with the SIP response '100 trying'
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
If Short Form / Compact Headers are being used in a SIP message, what does F stand for?
  • Or provide a new one...
Forward
  • Or provide a new one...
From
  • Or provide a new one...
Fail-over
  • Or provide a new one...
Feature
  • Or provide a new one...
If Short Form / Compact Headers are being used in a SIP message, what does T stand for?
  • Or provide a new one...
To
  • Or provide a new one...
Track
  • Or provide a new one...
Timer
  • Or provide a new one...
Transaction
  • Or provide a new one...
If Short Form / Compact Headers are being used in a SIP message, what does V stand for?
  • Or provide a new one...
Referred-By
  • Or provide a new one...
Subject
  • Or provide a new one...
Contact
  • Or provide a new one...
Via
  • Or provide a new one...
The 'Replaces' header is used to replace an ‘existing’ SIP dialog with a new one
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Which of these audio codecs can 'scale' from low bit-rate narrowband speech to very high quality stereo music?
  • Or provide a new one...
G.729
  • Or provide a new one...
Opus
  • Or provide a new one...
G.711
  • Or provide a new one...
iLBC
  • Or provide a new one...
With 'Assured SIP' the SIP UA must send all of it's SIP messages to it's Proxy
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
An 'Access Router' in not required in an Assured SIP services network
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Relating to 'Assured SIP' select the 'Resource-Priority' value that is the 'Highest'
  • Or provide a new one...
dsn.flash
  • Or provide a new one...
dsn.immediate
  • Or provide a new one...
dsn.priority
  • Or provide a new one...
Relating to 'Assured SIP', if a Proxy receives a message with an unknown namespace, what does it do?
  • Or provide a new one...
Drops the message
  • Or provide a new one...
Forwards the message to the next Proxy
  • Or provide a new one...
Asks the send for an updated message to be sent
  • Or provide a new one...
Relating to 'Assured SIP' what does MLPP stand for?
  • Or provide a new one...
Multi-List Pre-emption and Precedence
  • Or provide a new one...
Multi-Link Pre-emption and Precedence
  • Or provide a new one...
Multi-Line Pre-emption and Precedence
  • Or provide a new one...
Multi-Level Pre-emption and Precedence
  • Or provide a new one...
An ICE-Lite device can only respond to an ICE connectivity check and never initiate one
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Trickle ICE begins connectivity checks with just host candidates
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
What does the A stand for in AS-SIP?
  • Or provide a new one...
Authenticated
  • Or provide a new one...
Assured
  • Or provide a new one...
Assisted
  • Or provide a new one...
Authorized
  • Or provide a new one...
Select the 'often mentioned' potential benefits of SIP Trunking - click 'all' that apply
  • Or provide a new one...
Possibly 'No costs' for SIP Trunk calls between two branch offices
  • Or provide a new one...
Eliminate BRI and PRI subscriptions
  • Or provide a new one...
Big cost savings on calls
  • Or provide a new one...
Easy to Add more trunks when required
  • Or provide a new one...
AMR-WB+ stands for Adaptive Multi-Rate Wide Base
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Which two Codecs have been ‘utilized’ to help ‘form’ the Opus codec?
  • Or provide a new one...
SILK
  • Or provide a new one...
iLBR
  • Or provide a new one...
Skype
  • Or provide a new one...
G.711
  • Or provide a new one...
CELT
  • Or provide a new one...
Packetization rate is always fixed regardless of the ITSP providing your service
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
A larger Packetization rate will result in more packets on the network per second
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
RTP can work with Unicast AND Multicast applications
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Which of these devices do you expect to see L2 Classification configuration options on?
  • Or provide a new one...
Switch
  • Or provide a new one...
Hub
  • Or provide a new one...
DSL Modem
  • Or provide a new one...
Bridge
  • Or provide a new one...
EF stands for 'Enhanced Forwarding' when 'implemented' on a Router in relation to QoS configuration
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
A packet with an ‘Assured Forwarding’ setting of AF41 is less likely to get dropped than one with a setting of AF43
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
What is the 'Default' port for ‘Secure’ SIP Messaging?
  • Or provide a new one...
80
  • Or provide a new one...
5061
  • Or provide a new one...
5000
  • Or provide a new one...
53
  • Or provide a new one...
ToS utilizes 3 bits whilst DiffServe utilizes 6 bits for ‘QoS’ configuration of a packet
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
What is the name of the Working Group that oversees the ‘ongoing’ development of the main SIP specifications?
  • Or provide a new one...
SIMPLE
  • Or provide a new one...
MMUSIC
  • Or provide a new one...
SIPCORE
  • Or provide a new one...
SOC
  • Or provide a new one...
STIR
  • Or provide a new one...
Select all that are SIP ‘Headers’
  • Or provide a new one...
Diversion
  • Or provide a new one...
Call-type
  • Or provide a new one...
Contact
  • Or provide a new one...
From
  • Or provide a new one...
Number
  • Or provide a new one...
Which of these may ICE on a UA utilize when attempting to 'communicate' with another UA?
  • Or provide a new one...
STUN
  • Or provide a new one...
TURN
  • Or provide a new one...
RTCP
  • Or provide a new one...
DTLS
  • Or provide a new one...
An address that a TURN server allocates to a SIP client as part of the ICE process is known as?
  • Or provide a new one...
The Relay candidate
  • Or provide a new one...
The Server Reflexive candidate
  • Or provide a new one...
The Local candidate
  • Or provide a new one...
Which 'tag' within a SIP message is used to indicate that a client supports ICE
  • Or provide a new one...
media.ice
  • Or provide a new one...
require.ice
  • Or provide a new one...
ufrag.ice
  • Or provide a new one...
sip.ice
  • Or provide a new one...
When GRUU is supported, what is used to help route messages to the correct destination device?
  • Or provide a new one...
IP address
  • Or provide a new one...
Instance ID
  • Or provide a new one...
MAC address
  • Or provide a new one...
SIP address
  • Or provide a new one...
Which two of these are Video codecs?
  • Or provide a new one...
H.265
  • Or provide a new one...
H.323
  • Or provide a new one...
4K
  • Or provide a new one...
OPUS
  • Or provide a new one...
VP9
  • Or provide a new one...
Which domain was ‘created’ by the GSMA?
  • Or provide a new one...
e164.arpa
  • Or provide a new one...
e164enum.net
  • Or provide a new one...
e164.info
  • Or provide a new one...
enum.org
  • Or provide a new one...
e164dns.com
  • Or provide a new one...
An SBC can be used to add or remove the ‘+’ code on called / calling telephone numbers
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
What ‘kind’ of server at a ‘Hosted Provider’ would hold the configuration information for a Hosted IP Phone?
  • Or provide a new one...
REGISTRATION
  • Or provide a new one...
LDAP
  • Or provide a new one...
BOOT
  • Or provide a new one...
DNS
  • Or provide a new one...
What unique identifier on an IP Phone can be used to allocate a Hosted IP phone it’s correct config details?
  • Or provide a new one...
IP Address
  • Or provide a new one...
Firmware ID
  • Or provide a new one...
Location ID
  • Or provide a new one...
MAC Address
  • Or provide a new one...
LTE is a ‘true’ 4G technology
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Which (two) of these are true 4G technologies
  • Or provide a new one...
LTE-A
  • Or provide a new one...
LTE
  • Or provide a new one...
VoLTE
  • Or provide a new one...
WiMAX 2
  • Or provide a new one...
Zigbee
  • Or provide a new one...
A 4G technology has to support IPv6
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
In the acronym EPC, what does the E stand for?
  • Or provide a new one...
Enhanced
  • Or provide a new one...
Evolved
  • Or provide a new one...
Equipment
  • Or provide a new one...
ENodeB
  • Or provide a new one...
Essential
  • Or provide a new one...
Which is the server that holds 'user' information in the IMS?
  • Or provide a new one...
CSCF
  • Or provide a new one...
ENUM
  • Or provide a new one...
HSS
  • Or provide a new one...
DIAMETER
  • Or provide a new one...
The Default Bearer (in an LTE network) has a QoS Class identifier with a value of 1 allocated to it when established
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
The Default Bearer (in an LTE network) is used for signaling
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Which of these servers in an IMS network is ‘effectively’ the SIP Registration server?
  • Or provide a new one...
ENUM/DNS
  • Or provide a new one...
HSS
  • Or provide a new one...
S-CSCF
  • Or provide a new one...
TAS
  • Or provide a new one...
In an IMS network the Call Session Control Function (CSCF) is made up of three ‘separate’ functions – which are they?
  • Or provide a new one...
Charging
  • Or provide a new one...
Serving
  • Or provide a new one...
Subscribing
  • Or provide a new one...
Proxy
  • Or provide a new one...
Interrogating
  • Or provide a new one...
What is the QoS Class identifier assigned to a Dedicated Bearer channel in an LTE network for a VoLTE call?
  • Or provide a new one...
1
  • Or provide a new one...
3
  • Or provide a new one...
5
  • Or provide a new one...
AMR is a Codec that can be used for a VoLTE call
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
When used, SIP ‘Preconditions’ will be seen in the SDP body of a SIP message
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
What does the P-CSCF contact to initiate setup for Dedicated Bearer for a VoLTE call?
  • Or provide a new one...
I-CSCF
  • Or provide a new one...
PCRF
  • Or provide a new one...
MME
  • Or provide a new one...
RAN
  • Or provide a new one...
In the acronyms GBR and non-GBR, what does the ‘B’ stand for?
  • Or provide a new one...
Bit
  • Or provide a new one...
Bearer
  • Or provide a new one...
Bandwidth
  • Or provide a new one...
ViLTE stands for Video over LTE
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Symmetric RTP will 'send' media back to the port that it received it from, thus ignoring port settings in the SIP - SDP Body
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Public / Private key encryption is often referred to as Symmetric encryption
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
AES is a popular HASH algorithm
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
SIPS stands for
  • Or provide a new one...
SIP Signaling
  • Or provide a new one...
SIP Secure
  • Or provide a new one...
SIP Streaming
  • Or provide a new one...
SIP Socket
  • Or provide a new one...
CNAM stands for Calling Name Delivery
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
Which Algorithm is used for Public/Private key encryption?
  • Or provide a new one...
Diffie-Hellman
  • Or provide a new one...
MD5
  • Or provide a new one...
DES
  • Or provide a new one...
Which provides output 'faster'? Asymmetric or Symmetric encryption?
  • Or provide a new one...
Asymmetric
  • Or provide a new one...
Symmetric
  • Or provide a new one...
Who allocates Public / Private keys that at not self-signed?
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Certificate Store
  • Or provide a new one...
Certificate Authority
  • Or provide a new one...
Certificate Server
  • Or provide a new one...
Certificate Actuary
  • Or provide a new one...
An asymmetric 'Public' key is NEVER given out
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True
  • Or provide a new one...
False
  • Or provide a new one...
Which Field (in a SIP message) does STIR define that the PASSporT token should be?
  • Or provide a new one...
SDP
  • Or provide a new one...
Privacy
  • Or provide a new one...
Identity
  • Or provide a new one...
P-Asserted-Identity
  • Or provide a new one...
To 'Validate' a caller when using STIR/SHAKEN, what does the Validating server need to do to complete it's job?
  • Or provide a new one...
Retrieve a NAPTR record
  • Or provide a new one...
Resolve a SRV Record
  • Or provide a new one...
Perfom a CNAM 'dip'
  • Or provide a new one...
Fetch a Certificate
  • Or provide a new one...
Which is the 'newer' header that should be used to show the detail of where a call may have been diverted from?
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Diversion
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History-info
  • Or provide a new one...
In a NAPTR record - E2U stands for E.164 to URL
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
If you see the element “SIP+D2T” in a DNS record, what transport protocol would SIP messaging then utilise for communications with the respective server?
  • Or provide a new one...
TLS
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TCP
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UDP
  • Or provide a new one...
A DNS service (SRV) record with a Priority of 10 and a Weight of 20 will be used in preference to a record that has a Priority of 20 and a Weight of 10?
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True
  • Or provide a new one...
False
  • Or provide a new one...
A SIP Network to Network Interface between a PBX and ITSP is known as a
  • Or provide a new one...
UNI
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NNI
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PNI
  • Or provide a new one...
Which of the ‘Layers of Interconnection’ defined by the IP-NNI publication is responsible for Phone number management and routing?
  • Or provide a new one...
Network
  • Or provide a new one...
Protocols
  • Or provide a new one...
Operations and Customer Care
  • Or provide a new one...
Routing
  • Or provide a new one...
Back Office
  • Or provide a new one...
In the IP-NNI publication, which is the ‘mandatory-to-implement’ voice codec?
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G.711 mu-Law
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G.729
  • Or provide a new one...
G.722.2
  • Or provide a new one...
G.726
  • Or provide a new one...
RFC 8489 defines Mapping and Filtering for NAT devices
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
A NAT will 'translate' the IP address in the SIP message
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
'Classic STUN' refers to RFC 5389
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
STUN does not work behind a 'Symmetric NAT'
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
STUN as defined in RFCs 5389 and 8489 is referred to as 'Session Traversal Utilities for NAT'
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
GRUU stands for Globally Routable User Agent URI
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
'rport' overrides the IP address number in the VIA header if the device is behind a NAT
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
Network Access Translation
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False
  • Or provide a new one...
True
  • Or provide a new one...
ICE supports the use of IPv6 candidates
  • Or provide a new one...
Ture
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False
  • Or provide a new one...
As defined in the STUN RFC 8489...Which 'type' of NAT is the most 'Friendly' towards SIP messaging?
  • Or provide a new one...
Address Dependent Mapping
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Address and Port Dependent Mapping
  • Or provide a new one...
Endpoint Independent Mapping
  • Or provide a new one...
Zero _____ Provisioning can greatly speed up the process in getting a device to a client and then getting Dial-tone. What's the missing word?
  • Or provide a new one...
Time
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Touch
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Trust
  • Or provide a new one...
46 is the setting used in Packets to ‘send’ them into the EF queue of a ‘configured’ Router. What is 46 represented in Binary?
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100110
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101110
  • Or provide a new one...
011010
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001000
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What header enables an existing SIP dialog to be ‘substituted’ with a new one?
  • Or provide a new one...
Require
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Supported
  • Or provide a new one...
Replaces
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Substitute
  • Or provide a new one...
Symmetric RTP uses the same port for sending and receiving the RTP media stream
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
The received parameter overrides the IP address in the Via header field, if the UA is behind a NAT
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Will a VoIP call getting an attestation value of 'C' applied to it result in termination providers automatically blocking this call?
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
Which SIP header will ‘hold’ the PASSporT when STIR/SHAKEN is implemented?
  • Or provide a new one...
Identity
  • Or provide a new one...
Attestation
  • Or provide a new one...
Verstat
  • Or provide a new one...
P-Asserted
  • Or provide a new one...
Which property in the PASSporT token would be used to indicate it is a SHAKEN PASSporT?
  • Or provide a new one...
alg
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ppt
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typ
  • Or provide a new one...
x5u
  • Or provide a new one...
STI/AS stands for
  • Or provide a new one...
STIR Telephone Integrated Access system
  • Or provide a new one...
Secure Telephone Identity Authentication service
  • Or provide a new one...
SHAKEN Telephone Identity Authorization service
  • Or provide a new one...
Signed Telephone Identity Access service
  • Or provide a new one...
What does RCD stand for?
  • Or provide a new one...
Rich Configuration Detail
  • Or provide a new one...
Rich Call Data
  • Or provide a new one...
Real Call Defined
  • Or provide a new one...
Real Classification detail
  • Or provide a new one...
What does the V stand for in STI/VS?
  • Or provide a new one...
Verification
  • Or provide a new one...
VoIP
  • Or provide a new one...
Vindication
  • Or provide a new one...
Verstat
  • Or provide a new one...
In STIR/SHAKEN 'architecture', what is the SKS?
  • Or provide a new one...
STIR key service
  • Or provide a new one...
SHAKEN key store
  • Or provide a new one...
Secure key store
  • Or provide a new one...
SHAKEN key service
  • Or provide a new one...
What PASSporT type is created if a call is diverted?
  • Or provide a new one...
rcd
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shaken
  • Or provide a new one...
redir
  • Or provide a new one...
div
  • Or provide a new one...
OOB STIR can be used when ...
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The Call path is all IP
  • Or provide a new one...
The Call path is not available
  • Or provide a new one...
The Call path includes TDM elements
  • Or provide a new one...
The Call path is unstable
  • Or provide a new one...
The 'origid' in a STIR Token allows….
  • Or provide a new one...
A call to be traced back to the verification server
  • Or provide a new one...
A call to be traced back to the handset that made the call
  • Or provide a new one...
A call to be traced back to the CA that issued the certificate that signed the call
  • Or provide a new one...
A call to be traced back to the customer of a specific Service provider
  • Or provide a new one...
OOB STIR means ‘Out of Bound’
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
An Enterprise would need a 'Delegated certificate' in order to create an RCD PASSporT
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
RCD information can be added to a shaken PASSporT
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
With regards to 'Security' what does the acronym CA mean?
  • Or provide a new one...
Cerificate Association
  • Or provide a new one...
Certificate Active
  • Or provide a new one...
Certificate AES
  • Or provide a new one...
Certificate Authority
  • Or provide a new one...
Certificate Amendment
  • Or provide a new one...
What is a CSR in relation to security?
  • Or provide a new one...
Cipher Suite Role
  • Or provide a new one...
Central Security Resource
  • Or provide a new one...
Call Security Registrar
  • Or provide a new one...
Certificate Signing Request
  • Or provide a new one...
In TLS, the L stands for
  • Or provide a new one...
Link
  • Or provide a new one...
Layer
  • Or provide a new one...
Level
  • Or provide a new one...
Line
  • Or provide a new one...
Diffie Hellman relates to 'Asymmetric' Encryption
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
A certificate received from a Webserver will include it’s Public key
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
What does SaaS mean?
  • Or provide a new one...
Software as a Service
  • Or provide a new one...
Systems as a Service
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SIP as a Service
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SBC as a Service
  • Or provide a new one...
In VNF, F stands for Feature
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
In Amazon’s AWS, what does the 'P' mean in VPC?
  • Or provide a new one...
Public
  • Or provide a new one...
Private
  • Or provide a new one...
Phones
  • Or provide a new one...
Protocol
  • Or provide a new one...
In SDP, which element in the m-audio entry will mean that media encryption is required?
  • Or provide a new one...
RTP/AVPF
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RTP/SAVPF
  • Or provide a new one...
SRTP/AVPF
  • Or provide a new one...
What does the P stand for in API?
  • Or provide a new one...
Programmable
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Presence
  • Or provide a new one...
Programming
  • Or provide a new one...
Platform
  • Or provide a new one...
What does CPaaS stand for ?
  • Or provide a new one...
Calling Plan as a Service
  • Or provide a new one...
Closed Platform as a Service
  • Or provide a new one...
Communications Platform as a Service
  • Or provide a new one...
Connection Pieces as a Service
  • Or provide a new one...
APIs can only existing on systems that are hosted ‘in the Cloud’
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
To retrieve information via an API, an application may issue a HTTP ______ request
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CALL
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GET
  • Or provide a new one...
RECEIVE
  • Or provide a new one...
ASK
  • Or provide a new one...
READ
  • Or provide a new one...
What is the 'e' in eMBB?
  • Or provide a new one...
Extended
  • Or provide a new one...
Enhanced
  • Or provide a new one...
Evolved
  • Or provide a new one...
Existing
  • Or provide a new one...
VoNR stands for
  • Or provide a new one...
Voice over Next Radio
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Voice over New Radio
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Voice over Near Radio
  • Or provide a new one...
Voice over Network Radio
  • Or provide a new one...
Which will you find in a 5GNR network only?
  • Or provide a new one...
eNodeB
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gNodeB
  • Or provide a new one...
What is the mandatory Voice Codec for 5GNR?
  • Or provide a new one...
VP9
  • Or provide a new one...
EVS
  • Or provide a new one...
AMR-WB
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H.266
  • Or provide a new one...
What does the E in LTE mean?
  • Or provide a new one...
Egress
  • Or provide a new one...
Enhanced
  • Or provide a new one...
Evolution
  • Or provide a new one...
Event sequence
  • Or provide a new one...
What does the ‘S’ stand for in the acronym PaaS?
  • Or provide a new one...
Service
  • Or provide a new one...
System
  • Or provide a new one...
Solution
  • Or provide a new one...
Session
  • Or provide a new one...
In the acronym (or term) VNF, the V stands for Virtual
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
In the acronym (or term) PaaS, the P stands for Presence
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
What does the acronym NFV stand for?
  • Or provide a new one...
New Function Vitalization
  • Or provide a new one...
Near Function Virtualization
  • Or provide a new one...
Neural Function Virtualization
  • Or provide a new one...
Network Function Virtualization
  • Or provide a new one...
NOC Function Virtualization
  • Or provide a new one...
What does the ‘I’ stand for in the acronym IaaS?
  • Or provide a new one...
Internet
  • Or provide a new one...
Interface
  • Or provide a new one...
Infrastructure
  • Or provide a new one...
  • Or provide a new one...
For the acronym CNAM – what does the C mean?
  • Or provide a new one...
Caller
  • Or provide a new one...
Call
  • Or provide a new one...
Calling
  • Or provide a new one...
Called
  • Or provide a new one...
What value could you expect to see for the 'alg' property in a PASSport token?
  • Or provide a new one...
shaken
  • Or provide a new one...
passport
  • Or provide a new one...
ES256
  • Or provide a new one...
x.509.cer
  • Or provide a new one...
Is this a valid Telephone number list for a single Delegated Certificate issued to an Enterprise?
  • Or provide a new one...
True
  • Or provide a new one...
False
  • Or provide a new one...
Which SIP header type has been 'deprecated' though is still sometimes used?
  • Or provide a new one...
The P header
  • Or provide a new one...
The X header
  • Or provide a new one...
Which colour text represents the digital signature for the PASSporT Token?
  • Or provide a new one...
Blue
  • Or provide a new one...
Black
  • Or provide a new one...
Brown
  • Or provide a new one...
Red
  • Or provide a new one...
Green
  • Or provide a new one...
For this SDP setting shown in brackets – what will the ‘master key length’ be set to? (a=crypto:1 AES_CM_128_HMAC_SHA1_80)
  • Or provide a new one...
128
  • Or provide a new one...
80
  • Or provide a new one...
256
  • Or provide a new one...
In this image, which arrow is pointing in the wrong direction?
  • Or provide a new one...
6
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5
  • Or provide a new one...
4
  • Or provide a new one...
3
  • Or provide a new one...
2
  • Or provide a new one...
1
  • Or provide a new one...
What is the name often given to the SD-WAN function that will allow you to create and manage centralised policies to control traffic across the whole of the network?
  • Or provide a new one...
The Orchestrator
  • Or provide a new one...
The Policy Manager
  • Or provide a new one...
The Policy Authority
  • Or provide a new one...
The Controller
  • Or provide a new one...
Which implementation of ICE requires a device to always have a public IP address?
  • Or provide a new one...
ICE
  • Or provide a new one...
Trickle ICE
  • Or provide a new one...
ICE Lite
  • Or provide a new one...
Which service model is shown here, where Green elements represent what the ‘provider’ manages?
  • Or provide a new one...
BaaS
  • Or provide a new one...
SaaS
  • Or provide a new one...
PaaS
  • Or provide a new one...
IaaS
  • Or provide a new one...
Which of these are 'valid' enterprise identities in a SIP message?
  • Or provide a new one...
P-Asserted-Identity
  • Or provide a new one...
From
  • Or provide a new one...
VIA
  • Or provide a new one...
Origin
  • Or provide a new one...
SHA-2 relates to 'hashing'
  • Or provide a new one...
False
  • Or provide a new one...
True
  • Or provide a new one...
When this Token is Base64 encoded, where in the SIP message will you see it?
  • Or provide a new one...
RCD PASSporT
  • Or provide a new one...
Identity Header
  • Or provide a new one...
P-Asserted-Identity header
  • Or provide a new one...
SDP body
  • Or provide a new one...