GSLC Question #102: Real Exam Question with Answer & Explanation

Worms are self-contained self-replicating programs that spread across networks by consuming bandwidth, and unlike viruses they do not require a host file to propagate.

Question

Which of the following statements are true about worms? Each correct answer represents a complete solution. Choose all that apply.

Options

AWorms can exist inside files such as Word or Excel documents.
BWorms cause harm to the network by consuming bandwidth, whereas viruses almost always corrupt
CWorms replicate themselves from one system to another without using a host file.
DOne feature of worms is keystroke logging.

Explanation

Worms are self-contained self-replicating programs that spread across networks by consuming bandwidth, and unlike viruses they do not require a host file to propagate.

Common mistakes.

A. Existing inside files such as Word or Excel documents is characteristic of macro viruses, not worms - worms are self-contained and do not embed themselves in or depend on host documents to spread.
D. Keystroke logging is a capability associated with Trojans and spyware, not a defining feature of worms, which are primarily focused on self-replication and network propagation.

Concept tested. Distinguishing worm behavior from viruses and other malware

Reference. https://www.cisa.gov/news-events/news/understanding-hidden-threat-rootkits

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