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Que. A channel has a bit rate of 4 kbps and one-way propagation delay of 20 ms. The channel uses stop and wait protocol. The transmission time of the acknowledgement frame is negligible. To get a channel efficiency of at least 50%, the minimum frame size should be
a. 80 bytes
b. 80 bits
c. 160 bytes
d. 160 bits
Answer:160 bits
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