CWNA-107

CWNA-107 practice questions, page 4 of 4, with answer review and explanations.

Question 16

What is appended to the end of each 802.11 data frame after the payload?

  1. FCS
  2. Preamble
  3. MAC header
  4. PHY header

Question 17

When an ACK frame is not received by the transmitting STA, what is assumed?

  1. The frame was correctly delivered
  2. The frame was not delivered and must be retransmitted
  3. The receiver is offline
  4. The receiver processed the frame, but did not respond with an ACK frame because 802.11w is enabled

Question 18

When a client station sends a broadcast probe request frame with a wildcard SSID, how do APs respond?

  1. For each probe request frame, only one AP may reply with a probe response.
  2. Each AP responds in turn after preparing a probe response and winning contention.
  3. Each AP checks with the DHCP server to see if it can respond and then acts accordingly.
  4. After waiting a SIFS, all APs reply at the same time with a probe response.

Question 19

What security solution is deprecated in the 802.11 standard and should never be used in any modern WLAN deployment?

  1. AES
  2. Shared Key Authentication
  3. CCMP
  4. Open System Authentication