EDUCATION (CBSE/UGC NET)

Detailed explanation-1: -Definition: A computer virus is a malicious software program loaded onto a user’s computer without the user’s knowledge and performs malicious actions. Description: The term ‘computer virus’ was first formally defined by Fred Cohen in 1983. Computer viruses never occur naturally.

Detailed explanation-2: -A computer virus is a piece of software that can ‘infect’ a computer, install itself and copy itself to other computers, without the users knowledge or permission. It usually attaches itself to other computer programs, data files, or the boot sector of a Hard drive.

Detailed explanation-3: -A computer virus is a type of malware that attaches to another program (like a document), which can replicate and spread after a person first runs it on their system. For instance, you could receive an email with a malicious attachment, open the file unknowingly, and then the computer virus runs on your computer.

Detailed explanation-4: -The correct answer is Software. A computer virus is a malicious software that, when executed replicates itself by modifying other computer programs.

Detailed explanation-5: -Examples of computer viruses Trojans-As in the myth, a Trojan is a virus that hides within a legitimate-seeming program to spread itself across networks or devices. Ransomware-Ransomware is a type of malware that encrypts a user’s files and demands a ransom for its return.