200-201 Security Concepts Practice Question
Which type of malware is characterized by self-replication and spreading to other systems without user interaction, often causing network congestion?
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 self-replicating and spreads automatically, unlike a virus which requires a host file.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Ransomware
Why it's wrong here
Ransomware encrypts files for ransom; it may spread but not primarily by self-replication.
- ✗
Trojan
Why it's wrong here
A Trojan disguises as legitimate software but does not self-replicate.
- ✓
Worm
Why this is correct
Worms self-replicate and spread over networks without user intervention.
- ✗
Virus
Why it's wrong here
A virus requires user action to spread (e.g., opening a file).
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This 200-201 practice question is part of Courseiva's free Cisco certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the 200-201 exam.