Question: Suppose two nodes, A and B, are attached to opposite ends of a 1200 meter cable, and that they each have one frame of 2,000 bits (including all headers) to send to each other. Both nodes attempt to transmit at timet 0. Suppose there are four repeaters between A and B, each inserting a 20-bit (or 20 bit/10Mbps = 2 microseconds) delay. Assume the transmission rate is 10Mbps, and CSMA/CD with backoff intervals of multiples of 512 bits is used. After the first collision, A draws K = 0 and B draws K = 1 in the exponential %3D backoff protocol. Ignore the gam signal and the 96- bit delay. a) What is the one-way propagation delay (including repeater delays) between A and B? Assume that the signal propagation speed is 2 x 10° m/s. b) At what time is A's packet completely delivered at В?

Question: Suppose two nodes, A and B, are attached to opposite ends of a 1200 meter cable, and that they each have one frame of 2,000 bits (including all headers) to send to each other. Both nodes attempt to transmit at timet 0. Suppose there are four repeaters between A and B, each inserting a 20-bit (or 20 bit/10Mbps = 2 microseconds) delay. Assume the transmission rate is 10Mbps, and CSMA/CD with backoff intervals of multiples of 512 bits is used. After the first collision, A draws K = 0 and B draws K = 1 in the exponential %3D backoff protocol. Ignore the gam signal and the 96- bit delay. a) What is the one-way propagation delay (including repeater delays) between A and B? Assume that the signal propagation speed is 2 x 10° m/s. b) At what time is A's packet completely delivered at В?

Systems Architecture

7th Edition

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Stephen D. Burd

Chapter8: Data And Network Communication Technology

Section: Chapter Questions

Problem 2PE

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