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Cisco 642-742 Exam Syllabus Topics:

Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 Sample Questions:

1. What is the difference between the QoS values on the wired and wireless sides of a WLAN?

A) The wireless side of the network uses WMM, which carries voice in the Gold queue with a CoS of 6. The wired side of the network uses CoS/DSCP values of 5 and EF.
B) The wireless side of the network uses WMM, which carries voice in the Platinum queue with a CoS of 6. The wired side of the network uses CoS/DSCP values of 5 and EF.
C) The wireless side of the network uses WMM, which carries voice in the Platinum queue with a CoS of 7. The wired side of the network uses CoS/DSCP values of 5 and 40.
D) The wireless side of the network uses WMM, which carries voice in the Gold queue with a CoS of 7. The wired side of the network uses CoS/DSCP values of 5 and EF.

2. Users are experiencing poor voice quality on a new VoWLAN. Which feature can be used to isolate the issue?

A) TSPEC
B) TSM
C) EDCA
D) CAC
E) U-APSD

3. Users are experiencing poor audio quality when calling from their 7925 series VoIP Phones. Call quality is exceptional from wired to wired phones, but not from wired to wireless phones. The wired network has QoS deployed properly and the SSID is configured with Platinum QoS. What should be verified to troubleshoot the issue?

A) The controller is marking the 802.1p tag of 5, the AP switchport has been configured to trust DSCP, and the controller's switchport to trust CoS.
B) The controller is marking the 802.1p tag of 4, the AP switchport has been configured to trust CoS, and the controller's switchport to trust DSCP.
C) The controller is marking the 802.1p tag of 3, the AP switchport has been configured to trust DSCP, and the controller's switchport to trust CoS.
D) The controller is marking the 802.1p tag of 6, the AP switchport has been configured to trust CoS, and the controller's switchport to trust DSCP.

4. Refer to the exhibit.

A customer with a high-density deployment has called stating there have been voice quality issues with roaming clients. Given the configuration, what is the problem?

A) Static IP tunneling should be enabled so that the voice clients can be tunneled properly.
B) Band-Select has not been enabled and is allowing the voice client to switch bands when roaming.
C) Load-Balancing is enabled and sending reason code 17 to roaming voice clients.
D) DTIM should be configured to 2 on both 2.4 and 5ghz to aid in delivery of wireless frames during roaming.

5. After implementing 802.11n SGI in a noisy environment increased interference is noted, at what level would the interference be introduced by the change?

A) ACKs
B) headers
C) symbols
D) packets

Solutions: