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2021 Jul ccie collaboration 400-051:

Q81. Refer to the exhibit. 

How many SIP signaling transaction(s) took place in this SIP message exchange between two SIP user agents? 

A. 1 

B. 2 

C. 3 

D. 4 

E. 5 

F. 6 

Answer: C 

Q82. Refer to the exhibit. 

Assuming that the administrator has never performed any manual custom uploads, which two file types can be found when you choose Software Upgrades, followed by TFTP File Management on the Cisco Unified Operating System Administration web page? (Choose two.) 

A. IP phone configuration files 

B. sample music-on-hold audio files 

C. Identity Trust List files 

D. IP phone license files 

E. Mobile Voice Access audio files 

F. softkey template files 

Answer: CE 

Q83. In which call state does the Mobility soft key act as a toggle key to enable or disable Single Number Reach for Cisco Unified Communications Manager Express SCCP IP phones? 

A. idle 

B. seized 

C. alerting 

D. ringing 

E. connected 

Answer: A 

Q84. Refer to the exhibit. 

Your customer sent you this debug output, captured on a Cisco IOS router (router A), to troubleshoot a problem where all H.323 calls that originate from another Cisco IOS router (router B) are being dropped almost immediately after arriving at router A. What is the reason for these disconnected calls? 

A. Calls were unsuccessful because of internal, memory-related problems on router A. 

B. Calls were rejected because the called number was denied on a configured class of restriction list on router A. 

C. Calls were rejected because the VoIP dial peer 1002 was not operational. 

D. Calls were unsuccessful because the router B IP address was not found in the trusted source IP address list on router A. 

E. Calls were rejected by router A because it received an admission reject from its gatekeeper because of toll fraud suspicion. 

Answer: D 

Q85. What is the amount of audio bandwidth, in kilobits per second, that is used in the Cisco Unified Communications Manager location bandwidth calculation for a G.728 call? 

A. 8 

B. 16 

C. 24 

D. 29 

E. 80 

Answer: B 

400-051 free practice exam

Rebirth 400-051 vce:

Q86. Which statement describes DTMF processing on Cisco Unified Contact Center Express with supported SIP-based agent IP phones that are registered to Cisco Unified Communications Manager? 

A. Cisco Unified CCX receives the DTMF digits via SIP NOTIFY messages. 

B. Cisco Unified CCX receives the DTMF digits in the RTP payload based on RFC 2833. 

C. Cisco Unified CCX receives the DTMF digits via JTAPI messages. 

D. Cisco Unified CCX receives the DTMF digits via SIP INFO messages. 

E. Cisco Unified CCX receives the DTMF digits as part of the audio encoding in the RTP stream. 

Answer: C 

Q87. Assume 6 bytes for the Layer 2 header, 1 byte for the end-of-frame flag, and a 40-millisecond voice payload, how much bandwidth should be allocated to the strict priority queue for five VoIP calls that use a G.729 codec over a multilink PPP link? 

A. 87 kb/s 

B. 134 kb/s 

C. 102.6 kb/s 

D. 77.6 kb/s 

E. 71.3 kb/s 

Answer: A 

Q88. What is the name of the logical channel proposal that is transmitted from the called entity to the calling entity in H.323 Fast Connect? 

A. Forward Logical Channel 

B. Backward Logical Channel 

C. Reverse Logical Channel 

D. Originator Logical Channel 

E. Destination Logical Channel 

Answer: C 

Q89. What does a comma accomplish when it is used in a SIP Dial Rule pattern that is associated with a Cisco 9971 IP Phone that is registered to Cisco Unified Communications Manager? 

A. It inserts a 500-millisecond pause between digits. 

B. It causes the phone to generate a secondary dial tone. 

C. It is a delimiter and has no significant dialing impact. 

D. It indicates a timeout value of 5000 milliseconds. 

E. It is an obsolete parameter and will be ignored. 

Answer: B 

Q90. What is the maximum length of any numeric geographic area address in ITU recommendation E.164? 

A. 15 

B. 18 

C. 21 

D. 22 

E. 25 

Answer: A 

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