642-742 by Cisco Actual Free Exam Questions And Answers

Question 1

When verifying a voice survey with a Cisco 7925G phone in site survey mode, what information can be found in the CU field?

A. Channel Used

B. Channel Unavailable

C. Channel Utilization

D. Concurrent Users

E. CUCM Users

F. Connected Users

Discussion 0

Correct Answer: C Vote an answer

Question 2

During a post site survey with a wireless phone, 30% of the area shows -69 dBm signal strength. What is the recommended RSSI for voice deployments?

A. -65 dBm

B. -67 dBm

C. -68 dBm

D. -66 dBm

Discussion 0

Correct Answer: B Vote an answer

Question 3

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. RFID

B. Xbox wireless controller

C. jammer

D. Bluetooth device

E. microwave

F. cordless phone

Discussion 0

Correct Answer: F Vote an answer

Question 4

Which of these authentication and encryption combinations would be considered the most secure?

A. LEAP and WPA TKIP

B. WPA-PSK and TKIP

C. EAP-FAST and WPA2 AES

D. EAP-FAST and WPA TKIP

Discussion 0

Correct Answer: C Vote an answer

Question 5

What are the results that you can expect when performing a Cisco WLC v7.0 link test on a wireless IP phone?

A. The device must be running at least Cisco Compatible Extensions v2 or higher, for the test and results to be successful.

B. The device must be running at least Cisco Compatible Extensions v4 or higher, for the test and results to be successful.

C. A device that is not running a version of Cisco Compatible Extensions will show only packets that are sent and received.

D. A device that is not running a version of Cisco Compatible Extensions will show packets
that are sent, packets that are received, local signal strength, and SNR.

Discussion 0

Correct Answer: D Vote an answer

Question 6

Which three options are benefits of U-APSD? (Choose three.)

A. optimized power-save mode periods

B. increased call capacity

C. priority bandwidth and polling

D. bandwidth reservation

E. synchronization of the transmission and reception of voice frames

Discussion 0

Correct Answer: A,B,E Vote an answer

Question 7

What are the benefits from enabling TSM for a VoWLAN using a WLC v7.0?

A. provides packet loss and latency covering the end-to-end voice path on all links and additional parameters on the VoWLAN segment

B. provides packet loss covering the end-to-end voice path on all links and additional parameters on VoWLAN segment

C. provides packet loss, latency, and additional parameters on VoWLAN call segment

D. provides packet loss and latency covering the end-to-end voice path on all links

Discussion 0

Correct Answer: C Vote an answer

Question 8

Which attribute does the VoWLAN Readiness Tool of WCS v7.0 use to predict acceptable conditions?

Discussion 0

Correct Answer: D Vote an answer

Question 9

Refer to the exhibit.

A customer is looking to deploy local radius authentication on their WLAN controller. After configuration has been completed, the administrator found that computers could authenticate; however, the VoIP phones could not. What is the problem given the output?

A. The EAP request-timeout is too short for the wireless phone to process the PAC from the WLAN controller.

B. EAPOL-Key timeout should be set to at least 20,000 Milliseconds to allow the PAC to be processed.

C. EAPOL-Key Max Retries should be set to 12 to ensure the wireless phone can authenticate.

D. The EAP Broadcast Key interval is set to 1 hour however should be 8 hours.

Discussion 0

Correct Answer: A Vote an answer

Cisco Implementing Cisco Unified Wireless Voice Networks (IUWVN) v2.0 - 642-742 Exam Practice Test

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