Practice Quiz

CWNA Wireless Network Administrator

Category - CWNA

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Which of the following 802.11 amendments defines quality of service (QoS) at the MAC sub-layer?
  1. 802.11f
  2. 802.11d
  3. 802.11q
  4. 802.11e
Explanation
Answer - D - The 802.11e amendment defines quality of service (QoS) at the MAC sub-layer.

Key Takeaway: 802.11e is a specification that defines QoS mechanisms for wireless devices that support bandwidth-sensitive applications, such as voice and video. 802.11e enhances the 802.11 MAC layer with a coordinated TDMA construct and adds error-correcting mechanisms for delay-sensitive applications, such as voice and video.
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