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1. Describe the QoS in 802.11e briefly, and list four access categories used for this purpose. 2. Describe how 802.11n uses the available channels to

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1. Describe the QoS in 802.11e briefly, and list four access categories used for this purpose. 2. Describe how 802.11n uses the available channels to aggregate 40MHz bandwidth (draw) 3. What are the three parts of an 802.11a PLCP frame? Describe them briefly (draw)

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