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Computer Networking : A Top-Down Approach

Computer Networking : A Top-down Approach

Authors:
James F. Kurose, Keith W. Ross
Exercise:
Review
Chapter:
Computer Networks And The Internet
Edition:
6
ISBN:
9780132856201
Question:
26

 

Question

What is the difference between a virus and a worm?

Answer

Virus

Worm

A virus is a software program that can replicate itself, and can enter the system through pen drives, disk drives, email attachments as well as downloaded files

Worms are self-replicating files that reside in the memory of an infected computer. It often disguises itself as system files to avoid detection.

Viruses spread to different systems through executable files.

Worms use Computer Networks to spread itself

Spreading speed of a Virus is slow.

Spreading speed of a Worm is faster

The virus tends to destroy damage or alter the files of target computers.

Worms does not modify any file but aims to harm the resource files.

A virus requires some form of human interaction to spread. Classic example: E-mail viruses.

 

Worm doesn’t require human interaction.

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