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Calculate the total time required to transfer a 1.5-MB file in the following cases, assuming an RTT of 80 ms, a packet size of 1 KB and an initial 2 × RTT of "handshaking" before data is sent.

(a) The bandwidth is 10 Mbps, and data packets can be sent continuously.

(b) The bandwidth is 10 Mbps, but after we finish sending each data packet we must wait one RTT before sending the next.

(d) Zero transmit time as in (c), but during the first RTT we can send one packet, during the second RTT we can send two packets, during the third we can send four = 23-1 , and so on. (A justification for such an exponential increase will be given in Chapter 6.)

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Computer Engineering, Engineering

Category:- Computer Engineering
Reference No.:- M91770760

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