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You are here: Home / CompTIA / Network+ / Section II: Network Installation and Configuration / Chapter 9: Wireless Network Configuration / Collision Avoidance

Collision Avoidance

Wireless LAN technologies do not allow collisions to be detected as they are in Ethernet environments because WLAN stations cannot hear jam signals due to their half-duplex functionality (i.e., they cannot listen and send at the same time). In order to suppress the negative effects of the half-duplex transmission, WLANs rely on the CSMA/CA mechanism (Carrier Sense Multiple Access with Collision Avoidance). Stations in the wireless LAN attempt to avoid collisions before they happen using a distributed coordinated function (DCF) that utilizes random backoff timers.

DCF requires a station wishing to transmit to listen for the . . .

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