Teskin
Páginas: 92 (22927 palabras)
Publicado: 6 de julio de 2010
Exam Name: Exam Type: Exam Code:
Cisco Voice over IP (CVOICE) Cisco 642-436
Total Questions
347
Question: 1 Which two statements describe the purpose of the technology prefix? (Choose two.) A. Technology prefixes are configured on gateways to indicate to the gatekeeper whether they support voice or video. B. Technology prefixes must always be configured on gateways. C. Technologyprefixes are used to identify different types or classes of gateways. D. Technology prefixes are prepended to the destination address by the gateway. E. Technology prefixes have to be unique on each gateway. Answer: C, D Question: 2 Which statement is true about only out-of-band signaling? A. A signaling bit is robbed from each frame. B. Signaling bits are sent in a special order in a dedicatedsignaling frame. C. All signaling is directly associated with its corresponding voice frame. D. All voice packets carry their own signaling. Answer: B Question: 3 Examine the example output. hostname GW1 ! interface Ethernet 0/0 ip address 172.16.2.1 255.255.255.0 h323-gateway voip interface h323-gateway voip id GK1-zone1.abc.com abc.com ipaddr 172.16.2.2 h323-gateway voip h323-id GW1 h323-gateway voipbind srcaddr 172.16.2.1 ! dial-peer voice 1 voip destination-pattern 1212. session-target ras ! dial-peer voice 2 pots destination-pattern 2125551212 no register e164 ! end Choose the command that will restore communication with gatekeeper functionality to this device. A. h323-gateway voip h323-id GK1 B. gateway C. h323-gateway voip bind srcaddr 172.16.2.2 D. h323-gateway voip GW1-zone2.abc.comabc.com ipaddr 172.16.2.1 Answer: B Question: 4 Refer to the exhibit. Which two actions would be initiated by a UAS? (Choose two.)
Page 1 of 111
Exam Name: Exam Type: Exam Code:
Cisco Voice over IP (CVOICE) Cisco 642-436
Total Questions
347
A. Contacts the user when a SIP invitation is received B. Originates the REFER method to initiate call termination C. Returns a response onbehalf of the user to the invitation originator D. Originates the INVITE method including a description of the session parameters E. Originates the ACK method to indicate that it has received a response to an invitation Answer: A, C Question: 5 Which option is true concerning the MGCP call agent? A. Acts only as a recorder of call details B. Provides only call signaling and call setup C. Manages allaspects of the call and voice stream D. Monitors the quality of each call after setup Answer: B Question: 6 Which statement best describes gatekeeper operation when the technology prefix is matched and the gatekeeper is using the technology prefix with hopoff? A. The gatekeeper always forwards the call to the zone specified in the hopoff command. B. The gatekeeper only forwards the call to thehopoff zone if the zone prefix does not match. C. The gatekeeper attempts to forward the call to the hopoff zone, but if this fails, it will forward the call to the zone specified in the zone prefix command. D. The gatekeeper attempts to forward the call to the zone specified in the zone prefix command first, but if this fails, it will forward the call to the zone specified in the hopoff command.Answer: A Question: 7 Refer to the exhibit. All IP phones are SCCP phones. Phone D makes an internal call to phone G. Which call setup signaling statement is true? A. Phone D signals phone G directly. Call setup is handled by the phones. B. Phone D signals gateway A, which processes the call and signals phone G. C. Phone D signals gateway B, which processes the call and signals phone G. D. Phone Dsignals gatekeeper. The gatekeeper processes the call and signals phone G. E. Phone D signals the call agent. The call agent processes the call and signals phone G.
Page 2 of 111
Exam Name: Exam Type: Exam Code:
Cisco Voice over IP (CVOICE) Cisco 642-436
Total Questions
347
Answer: E Question: 8 Refer to the exhibit. All IP phones use SCCP. Fax machine F calls fax machine J....
Cisco Voice over IP (CVOICE) Cisco 642-436
Total Questions
347
Question: 1 Which two statements describe the purpose of the technology prefix? (Choose two.) A. Technology prefixes are configured on gateways to indicate to the gatekeeper whether they support voice or video. B. Technology prefixes must always be configured on gateways. C. Technologyprefixes are used to identify different types or classes of gateways. D. Technology prefixes are prepended to the destination address by the gateway. E. Technology prefixes have to be unique on each gateway. Answer: C, D Question: 2 Which statement is true about only out-of-band signaling? A. A signaling bit is robbed from each frame. B. Signaling bits are sent in a special order in a dedicatedsignaling frame. C. All signaling is directly associated with its corresponding voice frame. D. All voice packets carry their own signaling. Answer: B Question: 3 Examine the example output. hostname GW1 ! interface Ethernet 0/0 ip address 172.16.2.1 255.255.255.0 h323-gateway voip interface h323-gateway voip id GK1-zone1.abc.com abc.com ipaddr 172.16.2.2 h323-gateway voip h323-id GW1 h323-gateway voipbind srcaddr 172.16.2.1 ! dial-peer voice 1 voip destination-pattern 1212. session-target ras ! dial-peer voice 2 pots destination-pattern 2125551212 no register e164 ! end Choose the command that will restore communication with gatekeeper functionality to this device. A. h323-gateway voip h323-id GK1 B. gateway C. h323-gateway voip bind srcaddr 172.16.2.2 D. h323-gateway voip GW1-zone2.abc.comabc.com ipaddr 172.16.2.1 Answer: B Question: 4 Refer to the exhibit. Which two actions would be initiated by a UAS? (Choose two.)
Page 1 of 111
Exam Name: Exam Type: Exam Code:
Cisco Voice over IP (CVOICE) Cisco 642-436
Total Questions
347
A. Contacts the user when a SIP invitation is received B. Originates the REFER method to initiate call termination C. Returns a response onbehalf of the user to the invitation originator D. Originates the INVITE method including a description of the session parameters E. Originates the ACK method to indicate that it has received a response to an invitation Answer: A, C Question: 5 Which option is true concerning the MGCP call agent? A. Acts only as a recorder of call details B. Provides only call signaling and call setup C. Manages allaspects of the call and voice stream D. Monitors the quality of each call after setup Answer: B Question: 6 Which statement best describes gatekeeper operation when the technology prefix is matched and the gatekeeper is using the technology prefix with hopoff? A. The gatekeeper always forwards the call to the zone specified in the hopoff command. B. The gatekeeper only forwards the call to thehopoff zone if the zone prefix does not match. C. The gatekeeper attempts to forward the call to the hopoff zone, but if this fails, it will forward the call to the zone specified in the zone prefix command. D. The gatekeeper attempts to forward the call to the zone specified in the zone prefix command first, but if this fails, it will forward the call to the zone specified in the hopoff command.Answer: A Question: 7 Refer to the exhibit. All IP phones are SCCP phones. Phone D makes an internal call to phone G. Which call setup signaling statement is true? A. Phone D signals phone G directly. Call setup is handled by the phones. B. Phone D signals gateway A, which processes the call and signals phone G. C. Phone D signals gateway B, which processes the call and signals phone G. D. Phone Dsignals gatekeeper. The gatekeeper processes the call and signals phone G. E. Phone D signals the call agent. The call agent processes the call and signals phone G.
Page 2 of 111
Exam Name: Exam Type: Exam Code:
Cisco Voice over IP (CVOICE) Cisco 642-436
Total Questions
347
Answer: E Question: 8 Refer to the exhibit. All IP phones use SCCP. Fax machine F calls fax machine J....
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