Cisco CCNP 642-437

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Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) Sample Questions:

1. To avoid unnecessary delay for high-priority traffic, on which speed link should you enable the link fragmentation and interleaving feature?

A) less than 768 kb/s
B) less than 1.544 Mb/s
C) less than 512 kb/s
D) less than 2.048 Mb/s

2. An access layer switch is configured to extend priority to an IP phone. Cisco Discovery Protocol is enabled on all ports. What are the three possible ways that an IP phone can be instructed to treat the Layer 2 CoS priority value of the attached PC? (Choose three.)

A) untrusted
B) configured CoS level
C) trusted
D) configured DSCP level
E) configured IEEE 802.1Q
F) trusted IEEE 802.1Q

3. Which four interworking call flows are associated with a Cisco Unified Border Element using media flow-around? (Choose four.)

A) H.323 fast start to H.323 fast start
B) H.323 fast start to H.323 slow start
C) SIP early offer to SIP delayed offer
D) H.323 slow start to SIP delayed offer
E) SIP delayed offer to SIP delayed offer
F) SIP early offer to H.323 fast start

4. Refer to the exhibit.

Your company's QoS policy states that all traffic that is arriving at access layer switches from IP phones should be marked with a DSCP value of 46 and that all untagged traffic that is arriving from a PC that is attached to an IP phone should be marked with a CoS value of 1. Which two options will satisfy the requirements for the CoS-to-DSCP map and are the correct QoS commands? (Choose two.)

A) mls qos map cos 0 8 18 26 40 48 50 56
B) mls qos dscp 1
C) mls qos map cos-dscp 0 10 18 26 34 46 48 56
D) mls qos map dscp 0 8 16 26 32 40 48 56
E) mls qos 1
F) mls qos cos 1

5. You are configuring a Cisco Unified Border Element. What do you need to do to achieve address hiding?

A) Under the voice service configuration mode, issue the media flow-around command.
B) Under the dial-peer configuration mode, issue the codec flow-through command.
C) Under the dial-peer configuration mode, issue the media flow-through command.
D) Activate the voice service voip command at the dial-peer configuration mode.

Solutions:

Question # 1 Answer: A

Question # 2 Answer: A,B,C

Question # 3 Answer: A,B,C,E

Question # 4 Answer: C,F

Question # 5 Answer: C