FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -A computer virus is a type of computer program that, when executed, replicates itself by modifying other computer programs and inserting its own code into those programs. If this replication succeeds, the affected areas are then said to be “infected” with a computer virus, a metaphor derived from biological viruses.

Detailed explanation-2: -A computer virus is a kind of malicious computer program, which when executed, replicates itself and inserts its own code. When the replication is done, this code infects the other files and program present on your system.

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: -Computer Viruses Computer virus is a small software program that is designed to spread from one computer to another and to interfere with computer operation. A true virus is capable of self-replication on a machine. Virus may spread between files or disks. There are estimated 30, 000 computer viruses in existence.