The Secret of Cisco 400-051 practice test

Q1. Which two SDP content headers can be found in a SIP INVITE message? (Choose two.) 

A. Expires 

B. Contact 

C. Connection Info 

D. Media Attributes 

E. Allow 

F. CSeq 

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Q2. According to ITU-T E.164 recommendations, which two fields in the National Significant Number code may be further subdivided? (Choose two.) 

A. Country Code 

B. National Destination Code 

C. Subscriber Number 

D. Regional Significant Number 

E. Local User Code 

F. National Numbering Plan 

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Q3. Refer to the exhibit. 

In this high-availability Cisco IM and Presence deployment with three subclusters, the first user is assigned to server 1A; the second user is assigned to server 2A; and the third user is assigned to server 3A. Assume that the Cisco IM and Presence is set to Active/Standby mode, to which server should the fourth user be assigned? 

A. 1A 

B. 3B 

C. 1B 

D. 2A 

E. 3A 

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Q4. When IP phone A was provisioned in a Cisco Unified Communications Manager, 2001 was configured as the directory number for its first line. Also, bob@cisco.com was defined as the only directory URI on the Directory Number configuration page for this line. A few days later, an end user was created in the same Cisco Unified Communications Manager and was associated with the same phone with the primary extension set to 2001. Also, bobby@cisco.com was defined as a directory URI for that end user. 

Which option about the primary directory URI for IP phone A is true? 

A. bob@cisco.com 

B. bobby@cisco.com 

C. It depends on which radio button was selected next to the Directory URI entries on the Directory Configuration page. 

D. Both are primary directory URIs in a manner like a shared line for DNs. 

E. Neither are primary directory URIs for IP phone A. 

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Q5. 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 

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Q6. To which QoS tool category does compressed RTP belong? 

A. classification 

B. marking 

C. link efficiency 

D. queuing 

E. prioritization 

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Q7. 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 

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Q8. Refer to the exhibit. 

A user is going through a series of dialing steps on a SIP Type B IP phone (for example, a Cisco 7975) to call an SCCP IP phone. Both phones are registered to the same Cisco Unified Communications Manager cluster. Assuming the calling SIP phone is associated with a SIP Dial Rule with a pattern value of 2001, which statement about the call setup process of this call is true? 

A. Each digit will arrive at Cisco Unified Communications Manager in a SIP NOTIFY message as a KPML event, and Cisco Unified Communications Manager will extend the call as soon as the collected digits match the extension of the SCCP IP phone, bypassing class of service configuration on both IP phones. 

B. Each digit will arrive at Cisco Unified Communications Manager in a SIP NOTIFY message as a KPML event. When.the collected digits match the extension of the SCCP IP phone, Cisco Unified Communications Manager will extend the call only if the class of service configuration on both phones permits this action. 

C. As soon as the user selects the Dial softkey, the SIP IP phone will forward all digits to Cisco Unified Communications Manager in a SIP INVITE message. Cisco Unified Communications Manager will extend the call as soon as the collected digits match the extension of the SCCP IP phone, bypassing class of service configuration on both IP phones. 

D. As soon as the user selects the Dial softkey, the SIP IP phone will forward all digits to Cisco Unified Communications Manager in a SIP INVITE message. Cisco Unified Communications Manager will extend the call only if class of service configuration on both phones permits this action. 

E. The SIP IP phone will wait for the interdigit timer to expire, and then send all digits to Cisco Unified Communications Manager in a SIP INVITE message. Cisco Unified Communications Manager will extend the call as soon as the collected digits match the extension of the SCCP IP phone, bypassing class of service configuration on both IP phones. 

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Q9. Which statement about G.722.1 codec support on Cisco Unified Communications Manager is true? 

A. It is always preferred by Cisco Unified Communications Manager over G.711. 

B. It is a high-complexity wideband codec. 

C. It operates at bit rates of 15.2 and 13.3 kb/s. 

D. It is supported for SIP and SCCP devices. 

E. It is supported for SIP and H.323 devices. 

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Q10. Which SIP message element is mapped to QSIG FACILITY messages being tunneled across a SIP trunk between two Cisco IOS gateways? 

A. SIP UPDATE 

B. SIP OPTIONS 

C. SIP SUBSCRIBE 

D. SIP INFO 

E. SIP NOTIFY 

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