200-201 Security Concepts Practice Question

Which type of malware is designed to replicate itself and spread to other systems without user intervention?

Answer choices

Why each option matters

Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.

Correct answer & explanation

✓

Worm

A worm is a self-replicating malware that spreads automatically across networks, unlike viruses that require a host file.

Answer analysis

For each option: why learners choose it and why it is or isn't the right answer here.

✗
Virus
Why it's wrong here
A virus requires user action to spread, such as opening an infected file.
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Ransomware
Why it's wrong here
Ransomware encrypts files for ransom but does not self-replicate.
✗
Trojan
Why it's wrong here
Trojans disguise as legitimate software but do not self-replicate.
✓
Worm
Why this is correct
Worms self-replicate and spread automatically.

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