What Does 400-051 exam cram Mean?

It is impossible to pass Cisco 400-051 exam without any help in the short term. Come to Testking soon and find the most advanced, correct and guaranteed Cisco 400-051 practice questions. You will get a surprising result by our Improved CCIE Collaboration practice guides.

The article at Testaimer.com going over http://www.testaimer.com/400-051-test is very comprehensive.

Q21. Which two statements about using the Load Server option for IP phone firmware distribution are true? (Choose two.) 

A. This option must be enabled on at least two servers in a Cisco Unified Communications Manager cluster. 

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

C. Phone firmware must be manually copied to any applicable load servers. 

D. The load server will not function if its IP address is not in the same subnet as the IP phones. 

E. This option is only available for newer IP phone models. 

F. This option does not accommodate falling back to Cisco TFTP on error. 

Answer: CF 

Q22. 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 


Q23. Which statement about high availability for XMPP federation in Cisco IM and Presence is true? 

A. A maximum of two Cisco IM and Presence nodes can be enabled for XMPP federation. 

B. Cisco IM and Presence load balances outbound requests across all nodes that are enabled for XMPP federation. 

C. Cisco IM and Presence load balances outbound requests across both nodes that are enabled for XMPP federation in a subcluster. 

D. The XMPP federation-enabled nodes should have different priorities and weights on the published DNS SRV for proper inbound request node selection. 

E. A single DNS SRV record that resolves to an XMPP federation-enabled node must be published on a public DNS server for inbound request routing. 


Q24. Refer to the exhibit. 

How many inbound calls can be handled simultaneously between ephone 1 and ephone 2 before a user busy tone is returned? 

A. 6 

B. 7 

C. 8 

D. 9 

E. 11 


Q25. 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 


Q26. Which statement describes the supported integration method when Cisco Unity Connection and Cisco Unified Communications Manager are installed on the same server as Cisco Unified Communications Manager Business Edition? 

A. Only SCCP integration is supported. 

B. Only SIP integration is supported. 

C. Both SCCP or SIP integration are supported, but you must choose one or the other. 

D. Q-Sig integration is supported through a voice-enabled Cisco ISR router. 

E. Circuit-switched integration is supported through PIMG. 


Q27. 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 

Q28. 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 

Q29. Which SIP message element is mapped to QSIG FACILITY messages being tunneled across a SIP trunk between two Cisco IOS gateways? 







Q30. What is the maximum one-way delay, in milliseconds, between any two Cisco Unified Communications Manager servers in a non-Session Management Edition cluster over an IP WAN? 

A. 20 

B. 40 

C. 80 

D. 160 

E. 250