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312-50V13 · Question #63

Which of the following describes the characteristics of a Boot Sector Virus?

The correct answer is C. Moves the MBR to another location on the hard disk and copies itself to the original location of the. A boot sector virus infects the master boot record (MBR) or volume boot record (VBR) of a storage device, replacing the legitimate boot code with its own malicious code. It typically achieves this by relocating the original MBR to another disk sector and then copying itself to th

Submitted by ngozi_ng· Mar 6, 2026Malware Threats

Question

Which of the following describes the characteristics of a Boot Sector Virus?

Options

  • AModifies directory table entries so that directory entries point to the virus code instead of the
  • BMoves the MBR to another location on the RAM and copies itself to the original location of the
  • CMoves the MBR to another location on the hard disk and copies itself to the original location of the
  • DOverwrites the original MBR and only executes the new virus code.

How the community answered

(40 responses)
  • A
    5% (2)
  • B
    3% (1)
  • C
    93% (37)

Why each option

A boot sector virus infects the master boot record (MBR) or volume boot record (VBR) of a storage device, replacing the legitimate boot code with its own malicious code. It typically achieves this by relocating the original MBR to another disk sector and then copying itself to the original MBR's location to ensure it executes during system boot.

AModifies directory table entries so that directory entries point to the virus code instead of the

Modifying directory table entries so they point to virus code instead of the original file is characteristic of a file infector virus, not specifically a boot sector virus.

BMoves the MBR to another location on the RAM and copies itself to the original location of the

Moving the MBR to RAM is incorrect; the MBR is a sector on a storage device and is processed by the BIOS/UEFI firmware, not typically moved to RAM by the virus itself in this manner.

CMoves the MBR to another location on the hard disk and copies itself to the original location of theCorrect

A boot sector virus infects the master boot record (MBR) or volume boot record (VBR) on a hard disk or removable storage. To ensure the system can still boot, it moves the original MBR to a different, often unused, sector on the disk and then writes its own malicious code into the original MBR's location, ensuring it's loaded and executed before the operating system.

DOverwrites the original MBR and only executes the new virus code.

Overwriting the original MBR without preserving it would likely render the system unbootable, which is not how most boot sector viruses operate as they aim to execute and then load the OS.

Concept tested: Boot sector virus characteristics

Topics

#boot sector virus#malware types#MBR#virus infection

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