Chapter Review Questions

1.	From the following list, identify three gateway control protocols. H.323 SIP RTP MGCP
2.	What H.323 component is responsible for performing a "capabilities exchange" between H.323 terminals? H.225 T.120 H.245 G.711
3.	Which H.323 devices prevent bandwidth oversubscription on the WAN? Terminals Gateways Gatekeepers MCUs
4.	What message does an H.323 gateway send to an H.323 gatekeeper to request admission to the WAN? ARQ ACF ARC LRQ
5.	Logical pieces of an MGCP network are called ________. MGCP terminals MGCP components MGCP gateways MGCP concepts
6.	Which of the following is considered an MGCP component? Call Call agent Event Signal
7.	In a Cisco IP telephony network, what acts as an MGCP call agent? Cisco CallManager Cisco Unity Cisco voice-enabled router Cisco voice-enabled switch
8.	Which SIP component initiates a SIP connection by sending an INVITE message? UAS UAC SIP proxy server SIP redirect server
9.	Identify the SIP server that informs the UA of the next server to contact. SIP proxy server SIP redirect server SIP location server SIP registrar server
10.	What are the two types of SIP messages? Event Request Signal Response