Computer Virus Class 10 Computer Science Important Question and Answer

1.    What is computer virus?

Ans: Computer virus is a harmful computer program that effects the normal functioning of the computer system.

 

2.    Which virus affects operating system?

Ans: Boot sector virus affects the operating system.

 

3.    Which virus affects both the operating system and application software?

Ans: Multipartite virus affects both the operating system and application software.

 

4.    Which virus affects the document files?

Ans: Macro virus affects the document files.

 

5.    What are the modes of virus transmission?

Ans: The modes of virus transmission are listed below:

1.   Sharing of infected external storage describe pen drive CD DVD

2.   Using pirated software

3.   Downloading the files from unknown websites

4.   Exchanging of data and information over the network

5.   Opening virus-infected email messages.

 

6.  What are the symptoms of computer virus?

Ans: The symptoms of computer virus are listed below:

1.   The program takes more time to load or fails to load

2.   Irritating messages come on screen suddenly

3.   Computer becomes slow

4.   The program opens automatically without giving instructions

5.   Missing files or mismatch of files

6.   The computer gets shut down unexpectedly.

 

 

7.  What are the effects of computer virus?

Ans: The effects of computer virus are listed below:

1.  Destroy data information and programs

2.   Reduce overall performance of computer

3.   Makes computer hang

4.   Delete or remove files permanently

5.   Change the size of files

6.   Spreads from one computer to another

 

8.  What are the preventive measures to protect our computer from virus?

Ans: The preventive measures to protect our computer from virus are listed below:

1.  Install Powerful antivirus

2.  Update antivirus software timely

3.  Do not use pirated software

4.  Do not download files from the internet and unknown sites.

5.  Scan external media like pen drive CD DVD before using it

6.  Do not open unknown emails

7.  Use a strong password to protect from unauthorized access by others.

 

9.  List the types of computer virus.

Ans: The types of computer virus are listed below:

1.  Boot sector virus

2.  File infector virus or parasitic virus

3.  Multipartite Virus

4.  Macro virus or document infector virus

5.  Script virus

6.  WORM

7.  Trojan Horse

 

10.  What is an Antivirus? Give examples.

 

Ans: An antivirus is a useful computer program that detects and remove computer virus from the computer system. Examples: AVG (Antivirus Guard) Kaspersky, Quick Heal, etc.