computer virus class 7

Which of the following are the signs of a virus attack?

• The computer runs slower than normal.

• There is a change in file size.

• The computer restarts on its own.

• All of the above.

A computer virus can spread through:

• E-mails

• Pen drives

• Both a and b

• None of these

Program viruses infect files that have the extension:

• .COM

• .EXE

• .SYS

• All of these

A computer shows unusual behavior to a virus attack

• true

• false

A computer virus is destructive in nature

• true

• false

Once you purchase an antivirus software, you need not update it for one year

• true

• false

You should delete spam mails without reading them.

• true

• false

Malware does not harm your computer

• true

• false

Viruses cannot spread from one computer to another

• true

• false

An antivirus program should run in the background at all times

• true

• false