11. We wish to transmit across a cable with a one-way propagation delay of 3 millisecond....
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11. We wish to transmit across a cable with a one-way propagation delay of 3 millisecond. Suppose we implement a 1000 Kbit per second channel on this cable with a fixed frame size of 1000 bits. a. If a windowing protocol is used, how large a window size (as a function of frames - e.g. answer would be stated as 2 frames) do we need inorder to have 100% link utilization. The ACK size is 3 bytes and is so small putting the Ack on the wire can be ignored (do not ignore the propagation time for ACKS). b. Building off of part a, now assume the return propagation delay (so from receiver to the sender) is 5 milliseconds and that ACKS are piggybacked on the frames. Assume What will the channel utilization be with a window size of 3 frames? c. Building off part a, if a stop-and-wait protocol is used, what will be the channel utilization if the frame size is 15,000 bits? 11. We wish to transmit across a cable with a one-way propagation delay of 3 millisecond. Suppose we implement a 1000 Kbit per second channel on this cable with a fixed frame size of 1000 bits. a. If a windowing protocol is used, how large a window size (as a function of frames - e.g. answer would be stated as 2 frames) do we need inorder to have 100% link utilization. The ACK size is 3 bytes and is so small putting the Ack on the wire can be ignored (do not ignore the propagation time for ACKS). b. Building off of part a, now assume the return propagation delay (so from receiver to the sender) is 5 milliseconds and that ACKS are piggybacked on the frames. Assume What will the channel utilization be with a window size of 3 frames? c. Building off part a, if a stop-and-wait protocol is used, what will be the channel utilization if the frame size is 15,000 bits?
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a To achieve 100 link utilization with a windowing protocol we need to consider the roundtrip time RTT and the channel bandwidth Given Oneway propagat... View the full answer
Related Book For
Computer Networking A Top-Down Approach
ISBN: 978-0136079675
5th edition
Authors: James F. Kurose, Keith W. Ross
Posted Date:
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