Cisco 642-742 Online Practice Questions and Exam Preparation

Cisco 642-742 Online Questions & Answers

• Question 1:

  When a VoWLAN client is in the range of two cells, which two statements describe how the client makes a decision about which cell is the best to associate with? (Choose two.)

  A. The client will associate with the cell with the highest RSSI value.
  B. The client will associate with the cell with the lowest SNR value.
  C. The client will associate with the cell broadcasting the highest 802.11e value.
  D. The client will associate with the cell broadcasting the highest TSPEC value.
  E. The client will associate with the cell broadcasting the lowest mandatory date rate.
  F. The client will associate with the cell broadcasting the highest data rate.
  G. The client will associate with the first cell that advertises U-APSD.
  A. The client will associate with the cell with the highest RSSI value.
  B. The client will associate with the cell with the lowest SNR value.

• Question 2:

  What is the best practice for configuring data rates for an 802.11g VoWLAN deployment?

  A. Configure mandatory data rates of 12 and 54 Mb/s. Disable data rates below 6 Mb/s, and configure all other data rates as supported.
  B. Configure a mandatory data rate of 6 Mb/s. Disable data rates below 6 Mb/s, and configure all other data rates as supported.
  C. Configure a mandatory data rate of 11 Mb/s. Disable data rates below 11 Mb/s, and configure all other data rates as supported.
  D. Configure a mandatory data rate of 12 Mb/s. Disable data rates below 12 Mb/s, and configure all other data rates as supported.
  D. Configure a mandatory data rate of 12 Mb/s. Disable data rates below 12 Mb/s, and configure all other data rates as supported.

• Question 3:

  Enhanced distributed channel access provides contention-free access to the channel for a period. What is the name of this amendment?

  A. WMM
  B. 802.1q
  C. 802.1p
  D. 802.1e
  E. 802.1d
  D. 802.1e

• Question 4:

  Using proper VoWLAN design practice, what would be the Cisco recommended total number of calls for a properly designed 802.11a cell to ensure call quality?

  A. 4
  B. 7
  C. 14
  D. 20
  E. 25
  F. 27
  D. 20

• Question 5:

  A client with the MAC address 00:AB:11:CD:22:EF is experiencing poor voice quality on the VoWLAN. Which three commands would assist in isolating the issue? (Choose three.)

  A. debug client 00:AB:11:CD:22:EF
  B. debug mobility pmk enable
  C. show client detail 00:AB:11:CD:22:EF
  D. debug capwap payload enable
  E. debug call-control event enable
  F. debug cac event enable
  A. debug client 00:AB:11:CD:22:EF
  C. show client detail 00:AB:11:CD:22:EF
  F. debug cac event enable

• Question 6:

  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. -66 dBm
  C. -67 dBm
  D. -68 dBm
  C. -67 dBm

• Question 7:

  What are the two equivalent 802.1p CoS categories that are associated with 802.11e AC_BE? (Choose two.)

  B. 1 C. 2
  D. 3
  E. 4
  F. 5
  D. 3

• Question 8:

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

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

• Question 9:

  A network engineer needs to reconfigure the WLAN settings on a 7925G phone, but the settings menu is locked. What key combo will unlock the menu?

  A. **#
  B. ##*
  C. *#
  D. #*
  A. **#

• Question 10:

  In order to place a call, what is the first step that a wireless phone must do?

  A. Associate with the wireless infrastructure.
  B. Authenticate with the web authentication server.
  C. Update its firmware with the Call Manager.
  D. Register with a call agent.
  A. Associate with the wireless infrastructure.