1 + What CSMA/CA mechanism is used for medium contention? (Choose all that apply.)
5 3. **Random backoff timer**
8 + Which field in the MAC header of an 802.11 frame resets the NAV timer for all listening 802.11 stations?
14 5. Strictly ordered bit
16 + The EDCA medium access method provides for the prioritization of traffic via priority queues that are matched to eight 802.1D priority tags. What are the EDCA priority queues called?
18 + **Access categories**
23 + ACKs are required for which of the following frames?
30 + What QoS mechanism can be used to reduce medium contention overhead during a frame burst of low-latency traffic?
35 4. Contention-free period
36 5. **Immediate Block ACK**