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Suppose dprop is greater than dtrans. At time t=dtrans, where is the first bit of the packet?

Suppose dprop is greater than dtrans. At time t=dtrans, where is the first bit of the packet?

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
Problem 1PE
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Consider two hosts, A and B, connected by a single link of rate R bps. Suppose that the two hosts are separated by m meters, and suppose the propagation speed along the link is s meters/sec. Host A is to send a packet of size L bits to host B. a. Suppose host A begins to transmit the packet at time t= 0, at time t-dtrans, where is the last bit of the packet? b. Suppose dprop is greater than dtrans. At time t =dtrans, where is the first bit of the packet? c. Suppose dprop is less than dtrans. At time t =dtrans, where is the first bit of the packet? d. Suppose s=2.5 x 108, L=100 bits, and R=28 Kbps. Find the distance m so that dprop = dtrans.
Transcribed Image Text:Consider two hosts, A and B, connected by a single link of rate R bps. Suppose that the two hosts are separated by m meters, and suppose the propagation speed along the link is s meters/sec. Host A is to send a packet of size L bits to host B. a. Suppose host A begins to transmit the packet at time t= 0, at time t-dtrans, where is the last bit of the packet? b. Suppose dprop is greater than dtrans. At time t =dtrans, where is the first bit of the packet? c. Suppose dprop is less than dtrans. At time t =dtrans, where is the first bit of the packet? d. Suppose s=2.5 x 108, L=100 bits, and R=28 Kbps. Find the distance m so that dprop = dtrans.
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