CompTIA: Advanced Security Practitioner (CASP) Exam Prep

Answer: D - Worms replicate without the need for a host file. By their nature and origin, worms are supposed to propagate. They will use whatever services they’re capable of to do that.

Key Takeaway: A computer worm is a self-replicating computer program. It uses a network to send copies of itself to other nodes, mostly without any user intervention. Unlike a virus, it does not need to attach itself to an existing program. Worms mostly consume bandwidth, whereas viruses almost always corrupt or devour files on a targeted computer.