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Which among the following is independent malicious program that need not any host program?

  • A.Trap doors
  • B.Trojan horse
  • C.Virus
  • D.Worm

Answer: D

Correct answer: Worm

A worm is self-contained: it propagates across a network on its own and needs no host program to attach to. Viruses and trojans both require something to carry them, and a trap door is a hidden entry point in a program rather than a program in its own right.

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