Question

Write any three differences between Executable Virus and Boot Sector Virus.​

Answer 1

Answer:

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Explanation:

An executable infector is a virus that infects executable programs. e.g. The Jerusalem virus is triggered when an infected program is executed.

A boot sector virus is a type of virus that infects the boot sector of floppy disks or the Master Boot Record (MBR) of hard disks (some infect the boot sector of the hard disk instead of the MBR).

Answer 2

Explanation:

Executable virus:

• Both memory-resident and non-memory-resident EXE infectors are possible.
• Viruses that are memory resident remain active in memory, sabotage one or more system operations (often interrupt 21h or Windows file system hooks), and infect files as they are accessed. Non-memory resident viruses scour a hard drive for EXE files and hijack them.

Boot sector virus:

• A disk's partition table or boot sector can be infected by boot sector viruses.
• These viruses commonly infect computers when they are started using infected floppy discs; the boot attempt does not need to be successful for the virus to infect the hard drive of the computer.

Solution for boot sector virus:

• When booting, you must force the power to turn off in order to see the booting options.
• Enter safe mode, hit Windows key + R, put shell:startup into the run box, and press Enter.
• Delete any files that can trigger a restart (often viruses or some bat files), then check Task Manager for any unknown startup processes. Finally, start over.

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