Answer: Option A
The Le-Hard virus is a computer virus that was first discovered in October 1997. It is also known as "Chaihai" or "CIH" virus. This virus targets the Windows 95/98 operating system and infects the master boot record (MBR) of the hard disk drive. It can overwrite critical system files and can cause severe damage to the system.
Now, let's take a closer look at the given options and determine the correct answer:
A. Command.com: Command.com is a command interpreter for DOS and Windows operating systems. It is responsible for executing many of the internal commands of the operating system. The Le-Hard virus is a file infecting virus that targets Command.com, and when executed, it infects other executable files on the system.
B. FRIDAY 13: FRIDAY 13 is a virus that triggers on Friday the 13th and is not related to the Le-Hard virus.
C. Hardware: The Le-Hard virus is a software virus that infects the software components of a computer system. It does not affect the hardware components of the system.
D. Software: The Le-Hard virus is a software virus that infects the software components of a computer system.
E. None of these: As explained above, the correct answer to the given question is option A, "Command.com".
In conclusion, the Le-Hard virus is a file infecting virus that targets the Command.com interpreter in the Windows 95/98 operating system. When executed, it infects other executable files on the system and can cause severe damage to the system. It is important to have updated antivirus software installed to protect against such viruses.