Answered: Computer A is sending a 10 MByte long…

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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Computer A is sending a 10 MByte long file to Computer B via packet-switching over two consecutive 100 Mbps links of 2000 km length each.
Assume that the signal propagation speed on both links is 2 x 10⁸ m/s.
Furthermore, assume that the maximum length of a packet is 1480 bytes and that Computer A fills each packet to the max, if possible.

If transmission starts at time t=0, at which time (in seconds) does the first bit arrive at the switch connecting link 1 and link 2? (What is the propagation delay for link 1?)

Expert Solution

Step 1

Given that,

Length of file= 10 MB

Length of packet= 1480 bytes

Bandwidth of the link= 100 Mbps

Distance of each link= 2000 Km

Propagation speed= 2*10⁸ m/s

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