question archive Suppose propagation delay is a, SIFS is a, DIFS is 3a, and RTS and CTS are 5a, respectively, for CSMA/CA with RTS/CTS
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Suppose propagation delay is a, SIFS is a, DIFS is 3a, and RTS and CTS are 5a, respectively, for CSMA/CA with RTS/CTS. (a) What is the earliest time for the receiver to send the CTS message? (b) If the data packet is 100a long, what is the shortest time for the receiver to send the ACK signal? (c) Explain why SIFS is kept smaller than DIFS. (d) Can you make SIFS = 0?