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2021 Apr 400-051 question

Q91. Which statement describes the Cisco best practice recommendation about priority queue bandwidth allocation in relationship to the total link bandwidth when multiple strict priority LLQs are configured on the same router interface? 

A. Each LLQ should be limited to one-third of the link bandwidth capacity. 

B. The sum of all LLQs should be limited to two-thirds of the link bandwidth capacity. 

C. The sum of all LLQs should be limited to one-half of the link bandwidth capacity. 

D. The sum of all LLQs should be limited to one-third of the link bandwidth capacity. 

E. Cisco does not recommend more than one strict priority LLQ per interface. 

Answer:


Q92. Which statement about the effective path in the Enhanced Location Call Admission Control mechanism on Cisco Unified Communications Manager is true? 

A. It is a sequence of links and intermediate locations that connect a pair of locations. 

B. It is used to define the bandwidth that is available between locations. 

C. Only one effective path is used between two locations. 

D. There could be multiple effective paths between a pair of locations. 

E. It logically represents the WAN link. 

Answer:


Q93. Which two user portion format conditions are true for directory URI on Cisco Unified Communications Manager 9.1 or later? (Choose two.) 

A. It supports the $ character. 

B. It support space between characters. 

C. It has a maximum length of 50 characters. 

D. It has a maximum length of 254 characters. 

E. It is always case-sensitive. 

F. It cannot be a directory number. 

Answer: AB 


Q94. Which two host portion format conditions are true for directory URI on Cisco Unified Communications Manager? (Choose two.) 

A. It is case sensitive. 

B. It cannot start with a hyphen. 

C. It must have at least one character. 

D. It supports IPv4 or IPv6 addresses, or fully qualified domain names. 

E. It cannot end with a hyphen. 

F. It supports the & character. 

Answer: BE 


Q95. Refer to the exhibit. 

Which SIP trunk deployment model is shown in this enterprise VoIP topology? 

A. mixed TDM and VoIP 

B. centralized 

C. hybrid 

D. traditional TDM 

E. distributed 

Answer:


Latest 400-051 exam answers:

Q96. 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. 

Answer:


Q97. Refer to the exhibit. 

Assume that the serial interface link bandwidth is full T1. What is the maximum amount of bandwidth allowed for priority queuing of RTP packets with a DSCP value of EF? 

A. 33% of 1.544 Mb/s 

B. 5% of 1.544 Mb/s 

C. 38% of 1.544 Mb/s 

D. 62% of 1.544 Mb/s 

E. 0% of 1.544 Mb/s 

Answer:


Q98. Which statement about the Cisco UC on UCS TRC and the third-party server specs-based virtualization support model is true? 

A. Both the UC on UCS TRC and the third-party servers spec-based support models have rule-based approaches. 

B. The UC on UCS TRC support model has a rule-based approach and the third-party servers spec-based support model has a configuration-based approach. 

C. The UC on UCS TRC support model requires a high level of virtualization experience while the third-party server spec-based support model requires a low to medium level virtualization experience. 

D. VMware vCenter is mandatory for the UC on UCS TRC support model but it is optional for the third-party server spec-based support model. 

E. VMware vCenter is optional for the UC on UCS TRC support model but it is mandatory for the third-party server spec-based support model. 

Answer:


Q99. Which statement about application inspection of SAF network services on an adaptive security appliance is true? 

A. The adaptive security appliance can inspect and learn the ephemeral port numbers that are used by H.225 and H.245 on SAF-enabled H.323 trunks. 

B. An explicit ACL must be configured on the adaptive security appliance for SAF-enabled SIP trunks. 

C. An explicit ACL must be configured on the adaptive security appliance for SAF-enabled H.323 trunks to account for ephemeral port numbers that are used by H.225 and H.245. 

D. The adaptive security appliance can inspect and learn the ephemeral port numbers that are used by H.225 on SAF-enabled H.323 trunks, but H.245 ports must be explicitly defined. 

E. The adaptive security appliance provides full application inspection for SAF network services. 

Answer:


Q100. 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. 

Answer: