Cisco Implementing Cisco Unified Communications Voice over IP and QoS v8.0 (CVOICE v8.0) : 642-437

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Cisco 642-437 Exam Syllabus Topics:

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

Question 1

In which situation would the trust boundary be located at the access layer?

A. if the endpoints, both IP phones and PCs, are incapable of marking traffic properly
B. if there are endpoints that cannot be trusted and connect directly to the distribution layer
C. if the access layer switch cannot trust or re-mark incoming traffic from endpoints properly
D. if PCs are switched through an IP phone and the IP phone traffic can be trusted to mark both traffic streams properly

Question 2

Which signaling protocol is proprietary to Cisco?

A. H.323
B. SIP
C. MGCP
D. SCCP

Question 3

Refer to the exhibit.

Cisco 642-437 Exam
When a voice-signaling packet arrives at the router with a DSCP value of AF31, which two options describe how it will be treated? (Choose two.)

A. The packet will be re-marked with a DSCP value of AF31.
B. The packet will be marked as DSCP 46 because that is the first set statement in the policy map.
C. The packet will match class map voip-signaling.
D. The packet will be re-marked as DSCP 26 and then to AF31.
E. The packet will not match any class maps.

Question 4

DRAG DROP
The voice gateway selects an inbound VoIP dial peer by matching the information elements in the setup message with the dial peer attributes. From the list on the left, drag the elements to the right and drop them in the order in which a voice gateway matches inbound calls. Not all options are used.

Question 5

When marking traffic for Expedited Forwarding, how does a device that is not capable of recognizing DSCP interpret the EF binary string 101110?

A. The device that cannot recognize DSCP will use best effort to forward the packet.
B. The devices in the network that do not recognize DSCP will use the three high-order DSCP bits as the CoS setting, resulting in a CoS value of 5.
C. The device that does not recognize DSCP will use 110 as the CoS value and forward the packet with a CoS of 6.
D. The first device in the network that does not recognize DSCP will use 110 as the CoS value and will replace the DSCP value with a CoS of 6 and forward the packet.

Solutions: