Chapter 3: Viruses and Malicious Software

Exam Objectives

check.png Understanding viruses

check.png Looking at malicious software

check.png Performing software updates

check.png Recovering an infected system

In this chapter, you find out about the different types of malicious software that you might encounter after you connect your system to the Internet or start sharing files with another system. As a service technician, you will spend most of your time trying to fix a computer that is polluted with viruses or other forms of malicious software.

Being able to protect your system from viruses and other forms of malicious software is an important skill to have. You also have to know how to perform a virus scan and remove viruses from your system.

My Computer Has a Virus!

A virus is a piece of software designed to do harm to the system in one fashion or another. The virus is typically associated with a file; and when that file is opened, the virus is activated and does its damage to the system. The damage could be disastrous in the sense that the system no longer starts up, or it might just create a faulty system that is ...

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