What do 802.11 stations perform to help avoid collisions on the WLAN medium?

Question

Options

• A802.11 stations detect collisions and set a back-off timer.
• BListen to verify that the medium is free before transmitting.
• CStations only transmit when polled by the access point.
• DTransmit on a fixed schedule.

• A
  3% (1)
• B
  80% (24)
• C
  7% (2)
• D
  10% (3)

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