Cisco 642-742

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Cisco 642-742 Exam Syllabus Topics:

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

1. Refer to the exhibit.

A customer is experiencing poor call performance on their 7920 wireless phones. The engineer troubleshooting the issue has opened up Cisco Spectrum Expert to try and find the problems. Given this output, what is causing the interference?

A) jammer
B) cordless phone
C) microwave
D) Bluetooth device
E) RFID
F) Xbox wireless controller

2. An engineer has fired up a packet capture to try to determine if there are malformed frames being transmitted. They notice that there is a station transmitting frames consecutively without giving other stations a chance to transmit. What capability is the engineer witnessing?

A) 802.11 fragment burst
B) 802.11e priority contention window
C) Aggregated MPDU
D) Extended Interframe Space

3. Which two options allow a Cisco Unified Wireless IP Phone 7925G to conserve its battery? (Choose two.)

A) 802.11r
B) PS-Poll
C) U-APSD
D) S-APSD
E) 802.11h

4. The AP has been properly configured for a VoWLAN survey. The RF environment contains a noise of -87 to -90 dBm. What would be the target value for the cell edge reading?

A) -67 dBm
B) -62 dBm
C) -60 dBm
D) -55 dBm
E) -70 dBm
F) -73 dBm

5. Which one of these options best describes the ideal WLAN design for wireless VoIP clients?

A) smaller cells with all configurable speeds to ensure that all clients (802.11a/b/g) can associate to the wireless infrastructure
B) smaller cells with APs in the inner areas using omnidirectional antennas, and APs on the outer walls using directional antennas facing inward
C) larger cells with higher speeds and WPA2 security enabled to ensure the best possible coverage
D) smaller cells with higher speeds and CAC-enabled prioritization of WMM clients

Solutions: