GENERAL KNOWLEDGE

Detailed explanation-1: -The Jerusalem virus is unique among other viruses of the time, as it is a logic bomb, set to go off on Friday the 13th on all years but 1987 (making its first activation date 13 May 1988). Once triggered, the virus not only deletes any program run that day, but also infects .

Detailed explanation-2: -File-infecting Virus It is also called a parasitic virus which typically infects files with .exe or .com extensions.

Detailed explanation-3: -File infector viruses: these infect program files, such as applications, games or utilities. They are often memory-resident, meaning that once they have been executed they remain active in the computer’s memory and can infect more programs. Examples include Jerusalem and Cascade.

Detailed explanation-4: -The Friday the 13th virus is actually called The virus Jerusalem, and was first created in 1987 with one objective in mind. The virus contained one destructive payload that was set to activate on Friday the 13th on all years except 1987.