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GATE | Gate IT 2005 | Question 72

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

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