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400-051 Exam Questions - Online Test


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Q1. Refer to the exhibit. 

This output was captured on a Cisco IOS gateway shortly after it became the active Cisco Unified Border Element in a box-to-box redundancy failover. 

How many calls are native to this Cisco Unified Border Element? 

A. 9 

B. 12 

C. 19 

D. 31 

E. 40 

Answer:

Q2. Refer to the exhibit. 

All displayed devices are registered to the same Cisco Unified Communications Manager server and the phones are engaged in an active call. Assuming the provided configurations exist at the phone line level and multicast MOH is disabled clusterwide, what will happen when the user of IP Phone B presses the Hold softkey? 

A. IP Phone A receives audio source 2 from MOH Server A. 

B. IP Phone A receives audio source 3 from MOH Server A. 

C. IP Phone A receives audio source 2 from MOH Server B. 

D. IP Phone A receives audio source 3 from MOH Server B. 

E. IP Phone A receives audio source 1 from MOH Server A. 

Answer:

Q3. Which two analog telephony signaling methods are most vulnerable to glare conditions? (Choose two.) 

A. FXS Loop-start 

B. FXO Ground-start 

C. E&M Wink-start 

D. E&M Delay-dial 

E. E&M Immediate-start 

F. E&M Feature Group D 

Answer: AE 

Q4. 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:

Q5. 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:

Q6. In a Cisco Unified Communications Manager design where +E.164 destinations are populated in directory entries, which call routing practice is critical to prevent unnecessary toll charges caused by internal calls routed through the PSTN? 

A. forced on-net routing 

B. automated alternate routing 

C. forced authorization codes 

D. client matter codes 

E. tail-end hop-off 

Answer:

Q7. Refer to the exhibit. 

IP phone 1 has the MAC address 11111.1111.1111, while IP phone 2 has the MAC address 2222.2222.2222. The first two incoming calls were answered by IP phone 1, while the third incoming call was answered by IP phone 2. What will happen to the fourth incoming call? 

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

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

C. Only IP phone 2 will ring and can answer the call. 

D. Neither phone will ring and the call will be forwarded to 2100. 

E. Neither phone will ring and the call will be forwarded to 2200. 

Answer:

Q8. Refer to the exhibit. 

How many calls, inbound and outbound combined, are supported on the IP phone? 

A. 1 

B. 2 

C. 8 

D. 12 

E. 50 

Answer:

Q9. Refer to the exhibit. 

If this SIP call is initiated using early offer, which SIP message will UA#2 use to communicate its media capability to UA#1? 

A. INVITE 

B. 180 Ringing 

C. 200 OK 

D. ACK 

E. RTP Media 

Answer:

Q10. Which two statements about the Peer Firmware Sharing option for IP phone firmware distribution are true? (Choose two.) 

A. This option uses a parent-child hierarchy in which a firmware image is downloaded by a parent phone to up to three directly associated child phones. 

B. This option must be enabled on Cisco Unified Communications Manager service parameters for Cisco TFTP. 

C. This option mandates that the parent phone and child phones be identical, selected phone models. 

D. This option allows firmware transfers between phones in different subnets, as long as the round-trip delay is less than 5 milliseconds. 

E. This option uses a parent-child hierarchy that must be manually defined by the Cisco Unified Communications Manager administrator. 

F. This option allows falling back to the TFTP server in the Cisco Unified Communications Manager cluster. 

Answer: CF