Explain what a computer virus is

Computer Viruses
Questions:

1. 
   Explain what a computer virus is.
   

A computer virus is a type of computer program that, when executed, replicates itself by modifying other computer programs and inserting its own code into those programs.



infected

2. 
   A computer that has a computer virus is said to be .
   

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  Stealing passwords or data
  
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  Logging keystrokes
  
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  Corrupting files
  
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  Spamming your email contacts
  
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3. 
   List 4 problems that computer viruses can cause if they infect a system.
   

4. 
   List 3 ways in which viruses can infect a system.
   

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  Visiting an infected website
  
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  Downloading free games
  
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  Opening spam email or an email attachment
  

5. 
   Explain 4 ways in which you can prevent your computer system being infected with a virus.
   

1.	Antivirus software.
2.	Don't use unsecured Wi-Fi
3.	Keep your personal information secure
4.	Protect your network.

Antivirus software is essential to protect your computer from viruses and other types of malware, such as ransomware and spyware.

6. 
   Explain why it is important to keep your anti-virus software up to date.
   

Ans:

(a)A computer virus is a malicious software program loaded onto a user's computer without the user's knowledge and performs malicious actions.
(b) Portable storage devices that plugged to computer and internet downloads