400-051 Exam Questions - Online Test

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Q31. Which Cisco Unified Communications Manager partition will be associated with a directory URI that is configured for an end user with a primary extension? 

A. null 

B. none 

C. directory URI 

D. default 

E. any partition that the Cisco Unified Communications Manager administrator desires 

Answer: C 

Q32. Refer to the exhibit. 

Which option describes the method used by Cisco IOS gateways to tunnel QSIG signaling messages in H.323 protocol? 

A. H.323 Annex M1 

B. H.323 Annex M2 

C. H.323 Annex A 

D. ISDN Generic Transparency Descriptor 

E. H.450.1 

Answer: D 

Q33. Assume 18 bytes for the Layer 2 header and a 10-millisecond voice payload, how much bandwidth should be allocated to the strict priority queue for three VoIP calls that use a G.722 codec over an Ethernet network? 

A. 331.2 kb/s 

B. 347.8 kb/s 

C. 261.6 kb/s 

D. 274.7 kb/s 

E. 238.4 kb/s 

Answer: A 

Q34. 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 for Cisco Unified Communications Manager? (Choose two.) 

A. IP phone configuration files 

B. announcement audio files 

C. ringer files 

D. IP phone license files 

E. sample music-on-hold audio files 

F. softkey template files 

Answer: BC 

Q35. Which two data frame lengths are supported by iLBC? (Choose two.) 

A. 10 milliseconds 

B. 20 milliseconds 

C. 30 milliseconds 

D. 40 milliseconds 

E. 50 milliseconds 

F. 60 milliseconds 

Answer: BC 

Q36. Refer to the exhibit. 

How many SIP signaling dialog(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: A 

Q37. Refer to the exhibit. 

Ephone 1 has three active calls. The first two calls were inbound calls, which the user put on hold to place a third call outbound. What will happen on ephone 1 when a fourth call arrives for extension 2001? 

A. The fourth call will be delivered to ephone 1 because it only received two inbound calls, one call less than the busy-trigger-per-button setting. 

B. The fourth call will be delivered to ephone 1 because the huntstop channel setting is not yet saturated. 

C. The fourth call will be delivered to ephone 1 because it can handle up to five calls on each button. 

D. The fourth call will be held temporarily by the IOS Software until ephone 1 disconnects one of the active calls. 

E. The fourth call will not be delivered and the caller will hear a user busy tone. 

Answer: E 

Q38. Which Cisco Unified Communications Manager Express ephone button configuration separator enables overflow lines when the primary line for an overlay button is occupied by an active call? 

A. o 

B. c 

C. w 

D. x 

E. : 

Answer: D 

Q39. Refer to the exhibit. 

The exhibit shows the Cisco IOS CLI output of debug ip dhcp packet, which was captured on a router that is located at a branch office where a single IP phone is located. There is a standalone Cisco Unified Communications Manager server at the central site, which also provides DHCP services to the IP phone at the branch office. You are troubleshooting a problem where the IP phone could not register to Cisco Unified Communications Manager. You have confirmed that the IP phone received an IP address in the correct subnet and with a correct subnet mask from the DHCP server. Assuming the IP phone is correctly defined on Unified CM, which two statements about the network components are true? (Choose two.) 

A. The MAC address of the IP phone is 01ec44761e3e. 

B. The IP address of the DHCP server is 10.101.15.1. 

C. The MAC address of the VLAN 101 interface is ec44761e3e7d. 

D. The IP address of the VLAN 101 interface is 10.101.15.1. 

E. There is IP connectivity between the VLAN 101 interface of the branch router and the ip-helper address that is configured on this interface. 

F. There is IP connectivity between the IP phone and the ip-helper address on the VLAN 101 interface. 

Answer: DE 

Q40. Which two statements are requirements regarding hunt group options for B-ACD implementation on Cisco Unified Communications Manager Express routers? (Choose two.) 

A. The ephone hunt group is mandatory. 

B. Either the ephone hunt group or the voice hunt group is acceptable. 

C. Hunt group members must be SCCP IP phones. 

D. Hunt group members can include both SCCP or SIP IP phones. 

E. Hunt group members must be SIP IP phones. 

F. The member hunting mechanism must be set to sequential. 

Answer: AC