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Suppose two nodes, A and B, are attached to opposite ends of a 900 m cable, and that they each have one frame of 1000 bits (including all headers and preambles) to send to each other. Both nodes attempt to transmit at time tO. Suppose there are four repeaters between A and B, each inserting a 20-bit delay. Assume the transmission rate is 10 Mb/s, 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 backoff protocol. Ignore the jam and the 96-bit time delay. What is the one way propagation delay (including repeaters delays) between A and B in seconds? Assume the signal propagation speed is 2*10^8 m/s At what time in seconds is A's packet completely delivered at B?

Suppose two nodes, A and B, are attached to opposite ends of a 900 m cable, and that they each have one frame of 1000 bits (including all headers and preambles) to send to each other. Both nodes attempt to transmit at time tO. Suppose there are four repeaters between A and B, each inserting a 20-bit delay. Assume the transmission rate is 10 Mb/s, 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 backoff protocol. Ignore the jam and the 96-bit time delay. What is the one way propagation delay (including repeaters delays) between A and B in seconds? Assume the signal propagation speed is 2*10^8 m/s At what time in seconds is A's packet completely delivered at B?

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Suppose two nodes, A and B, are attached to opposite ends of a 900 m cable, and that they each have one frame of 1000 bits (including all headers and preambles) to send to each other. Both nodes attempt to transmit at time to. Suppose there are four repeaters between A and B, each inserting a 20-bit delay. Assume the transmission rate is 10 Mb/s, 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 the exponential backoff protocol. Ignore the jam and the 96-bit time delay. What is the one way propagation delay (including repeaters delays) between A and B in seconds? Assume the signal propagation speed is 2*10^8 m/s At what time in seconds is A's packet completely delivered at B?
Transcribed Image Text:Suppose two nodes, A and B, are attached to opposite ends of a 900 m cable, and that they each have one frame of 1000 bits (including all headers and preambles) to send to each other. Both nodes attempt to transmit at time to. Suppose there are four repeaters between A and B, each inserting a 20-bit delay. Assume the transmission rate is 10 Mb/s, 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 the exponential backoff protocol. Ignore the jam and the 96-bit time delay. What is the one way propagation delay (including repeaters delays) between A and B in seconds? Assume the signal propagation speed is 2*10^8 m/s At what time in seconds is A's packet completely delivered at B?
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