[Precise] 400-051 Cisco practice exam 1-10 (Mar 2018)

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Q1.  How are queues serviced in Cisco IOS routers with the CBWFQ algorithm? 

A. first-in, first-out 

B. weighted round robin based on assigned bandwidth 

C. strict priority based on assigned priority 

D. last-in, first-out 

E. weighted round robin based on assigned priority 

Answer:


Q2. Which statement about a virtual SNR DN-configured Cisco Unified Communications Manager Express-enabled Cisco IOS router is true? 

A. Virtual SNR DN supports either SCCP or SIP IP phone DNs. 

B. A virtual SNR DN is a DN that is associated with multiple registered IP phones. 

C. Calls in progress can be pulled back from the phone that is associated with the virtual SNR DN. 

D. The SNR feature can only be invoked if the virtual SNR DN is associated with at least one registered IP phone. 

E. A call that arrived before a virtual SNR DN is associated with a registered phone, and still exists after association is made, but cannot be answered from the phone. 

Answer:


Q3. How many signaling bits are there in each T1 time slot using channel associated signaling with Super Frame? 

A. 1 

B. 2 

C. 4 

D. 8 

E. 12 

Answer:


Q4. Router A and router B are Cisco IOS routers with hardware CFB resources that are registered to the same Cisco Unified Communications Manager server. Which Media Resource Group and Media Resource Group List configuration should be implemented if an administrator wants to make sure that all provisioned DSPs on router A are consumed before router B's DSP is used? 

A. Router A's CFB and router B's CFB should each be configured in its own MRG. Both MRGs should then be grouped into the same MRGL, but the MRG that contains router A's CFB should be listed in higher order than the MRG that contains router B's CFB. Finally, associate the MRGL to all conference resource consumers. 

B. Router A's CFB and router B's CFB should each be configured in its own MRG. Both MRGs should then be further separated into different MRGLs. Finally, associate the MRGL that contains router A's CFB in higher order than router B's CFB to all conference resource consumers. 

C. Router A's CFB and router B's CFB should both be configured in the same MRG with router A's CFB listed higher than that of router B. Then associate the MRG with an MRGL and apply it to all conference resource consumers. 

D. Router A's CFB and router B's CFB should both be configured in the same MRG. Make sure router A's CFB is listed in a higher alphabetical order than router B's CFB. Then associate the MRG with an MRGL and apply it to all conference resource consumers. 

E. Router A's CFB and router B's CFB should both be configured in the same MRG. Use Cisco Unified Communications Manager service parameters to assign a higher priority to router A's CFB. Then associate the MRG with an MRGL and apply it to all conference resource consumers. 

Answer:


Q5. Refer to the exhibit. 

Which ds0-group option should you select to support automated number identification information collection on inbound calls for this digital T1 voice circuit? 

A. e&m-wink-start 

B. e&m-delay-dial 

C. e&m-delay-dial 

D. e&m-lmr 

E. e&m-fgd 

Answer:


Q6. Which four attributes are needed to determine the time to complete a TFTP file transfer process? (Choose four.) 

A. file size 

B. file type 

C. network interface type 

D. round-trip time 

E. packet loss percentage 

F. response timeout 

G. network throughput 

Answer: ADEF 


Q7. 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:


Q8. How many destinations can be configured for a SIP trunk on a Cisco Unified Communications Manager 9.1 system when the destination address is an SRV? 

A. 1 

B. 2 

C. 3 

D. 8 

E. 16 

Answer:


Q9. Which Cisco Unified Contact Center Express script media step can invoke a VXML application to retrieve and play prompts on-demand from an off-box location? 

A. Play Prompt step 

B. Voice Browser step 

C. Menu step 

D. Recording step 

E. Simple Recognition step 

Answer:


Q10. The iLBC codec operates at 38 bytes per sample per 20-millisecond interval. What is its codec bit rate in kilobits per second? 

A. 6.3 

B. 13.3 

C. 15.2 

D. 16 

E. 24 

Answer: