Tips to Pass 400-051 Exam (91 to 100)

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Q91. Which SIP request is used by Cisco Unified Communications Manager to signal DND status changes to a Cisco 9971 IP Phone? 

A. OPTIONS 

B. NOTIFY 

C. INFO 

D. REFER 

E. UPDATE 

Answer:

Q92. What does a period 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 matches any single digit from 0 to 9. 

B. It matches one or more digits from 0 to 9. 

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

D. It matches any single digit from 0 to 9, or the asterisk (*) or pound (#) symbols. 

E. It matches one or more digits from 0 to 9, or the asterisk (*) or pound (#) symbols. 

Answer:

Q93. Which two Cisco Unified Communications Manager SIP profile configuration parameters for a SIP intercluster trunk are mandatory to enable end-to-end RSVP SIP Preconditions between clusters? (Choose two.) 

A. Set the RSVP over SIP parameter to Local RSVP. 

B. Set the RSVP over SIP parameter to E2E. 

C. Set the SIP Rel1XX Options parameter to Disabled. 

D. Set the SIP Rel1XX Options parameter to Send PRACK If 1xx Contains SDP. 

E. Set the SIP Rel1XX Options parameter to Send PRACK for All 1xx Messages. 

F. Check the Fall Back to Local RSVP check box. 

Answer: BD 

Q94. When neither the active or standby Location Bandwidth Manager in the configured LBM group is available, what will the Cisco CallManager service on a subscriber Cisco Unified Communications Manager server do to make location CAC decisions? 

A. It will attempt to communicate with the first configured member in the Location Bandwidth Manager hub group. 

B. It will use the Call Treatment When No LBM Available service parameter with the default action to allow calls. 

C. It will use the Call Treatment When No LBM Available service parameter with the default action to reject calls. 

D. It will attempt to communicate with the local LBM service for location CAC decisions. 

E. It will allow all calls until communication is reestablished with any configured servers in the LBM group. 

Answer:

Q95. When a Cisco IOS gatekeeper receives an ARQ from a registered endpoint, what is the first step it will take in an attempt to resolve the destination address? 

A. Check to see if the destination address is locally registered. 

B. Check to see if the destination address matches the technology prefix. 

C. Check to see if the destination address matches the local zone prefix. 

D. Check to see if the destination address matches the remote zone prefix. 

E. Check to see if the destination address matches the default technology prefix. 

Answer:

Q96. Refer to the exhibit. 

Assume that the serial interface link bandwidth is full T1. What is the bandwidth that is guaranteed for voice signaling traffic with a DSCP value of CS3? 

A. 33 percent of 1.544 Mb/s 

B. 5 percent of 1.544 Mb/s 

C. 38 percent of 1.544 Mb/s 

D. 62 percent of 1.544 Mb/s 

E. 0 percent of 1.544 Mb/s 

Answer:

Q97. Which statement describes the external database requirement for the Cisco IM and Presence permanent group chat feature? 

A. All nodes in a Cisco IM and Presence cluster can share a physical external database. 

B. All nodes in a Cisco IM and Presence cluster can share a logical external database. 

C. Each node in a Cisco IM and Presence cluster must have its own physical external database. 

D. Each node in a Cisco IM and Presence cluster must have its own logical external database. 

E. An external database is not mandatory. 

Answer:

Q98. Which two compression formats for high-definition video have technical content that is identical to H.264? (Choose two.) 

A. MPEG-4 Part 10 

B. MPEG-4 Part 14 

C. MPEG-2 Part 7 

D. AVC 

E. VC3 

F. VP8 

Answer: AD 

Q99. Refer to the exhibit. 

During a QSIG tunneling over SIP call establishment, which two types of SIP messages can the OGW use to tunnel a waiting QSIG message? (Choose two.) 

A. SIP re-INVITE 

B. SIP NOTIFY 

C. SIP INFO 

D. SIP OPTIONS 

E. SIP UPDATE 

F. SIP REFER 

Answer: AE 

Q100. Refer to the exhibit. 

IP phone 1 has MAC address of 1111.1111.1111, and IP phone 2 has MAC address of 2222.2222.2222. The first two incoming calls were answered by IP phone 1, and the third incoming call was answered by IP phone 2. 

Which option describes what will happen to the fourth incoming call? 

A. Both phones ring, but only IP phone 2 can answer the call. 

B. Both phones ring and either phone can answer the call. 

C. Both phones ring, but only IP phone 1 can answer the call. 

D. Neither phone rings and the call is forwarded to 2100. 

E. Neither phone rings and the call is forwarded to 2200. 

Answer:

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