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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:

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

2. Which of the following describes SIP Early Offer?

A) In SIP Early Offer mode, the SDP media capabilities are sent in the 200 OK messages of the calling device.
B) In SIP Early Offer mode, the INVITE and the 200 OK messages use non-SDP message format to indicate SIP Early Offer
C) In SIP Early Offer mode, the SDP media capabilities are sent in the INVITE message of the calling device.
D) SIP Early Offer always uses session indicator 183.

3. What is the maximum percentage of packet loss that can be accepted on VoIP traffic?

A) less than 5%
B) less than 2%
C) 0
D) less than 1%

4. Refer to the exhibit.

How does a switch port that receives marked traffic from a Cisco IP phone use the mls qos trust cos command?

A) The CoS setting is modified according to the CoS-to-DSCP map.
B) For non-IP packets, the CoS is set to 7 and DSCP-to-CoS mapping is not applied.
C) The DSCP-to-CoS map is applied.
D) CoS is used to select the ingress and egress queues.

5. DRAG DROP
Drag the appropriate IOS command from the left and drop them in the spaces on the right in order to configure Cisco Unified Border Element. The ITSP does not support early offer. Not all boxes are used.

Solutions: