What optional protocol can be used in 802.11 to reserve the medium for one node's use?
a. RTS/CTS (Request to Send/Clear to Send)
b. RAR/CTU (Reserve Airtime Request/Clear to Use)
c. HA/RA (Hold Airtime/Reserved Airtime)
d. RT/FT (Request Time/Fair Time)
ANSWER: a
Computer Science & Information Technology
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