Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Chapter 1, Problem P31P

a.

Explanation of Solution

Given,

The length of the message is 8 × 106 bits

The transmission rate of the link is 2 Mbps

Transmissiondelay=LengthTransmissionrate

Note: 1Mbps=106bps

Substitute, “8 × 106” for “Length” and “2 × 106” for “Transmission rate” is given below:

The time required to send the message from source host to first packet switch is

8×

b.

Explanation of Solution

Transmissiondelay=LengthTransmissionrate

Note: 1Mbps=106bps

Substitute, “1 × 104” for “Length” and “2 × 106” for “Transmission rate” is given below:

The time required to move the first packet from source host to the first switch is,

1×1042

c.

Explanation of Solution

Transmissiondelay=LengthTransmissionrate

Note: 1Mbps=106bps

Substitute, “1 × 104” for “Length” and “2 × 106” for “Transmission rate” is given below:

The time required to move the first packet from source host to the first switch is,

1×1042×106

d.

Explanation of Solution

Reasons to use message segmentation:

  • In case of bit errors and single bit errors, the entire message must be retransmitted. Hence, message segmentation is used to eliminate retransmission...

e.

Explanation of Solution

Drawbacks of message segmentation:

  • Packets present in the link must be kept in a specified sequence at the destination...

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