Certified Ethical Hacker (CEH v11) — Question 363

Which type of malware spreads from one system to another or from one network to another and causes similar types of damage as viruses do to the infected system?

Answer options

• A. Worm
• B. Rootkit
• C. Adware
• D. Trojan

Correct answer: A

Explanation

A worm is designed to replicate itself and spread across networks, much like a virus, causing similar harm. In contrast, a rootkit is used to gain unauthorized access and control over a system, adware typically delivers unwanted advertisements, and a Trojan disguises itself as legitimate software but does not self-replicate.