Quick Answer
The correct answer is worm, because a worm is specifically designed to spread automatically across networks without requiring any user interaction. Unlike viruses, which need a host file and often a user action like opening an attachment, a worm is a standalone program that self-replicates by exploiting network vulnerabilities, making it capable of rapid, automated propagation. On the Cisco CyberOps Associate 200-201 exam, this question tests your ability to distinguish malware types by their propagation methods—worms are frequently contrasted with viruses and Trojans in scenario-based items. A common trap is confusing worms with viruses, so remember that worms are network-aware and self-sufficient, while viruses depend on host files. A useful memory tip: think of a worm as a “network crawler” that moves on its own, whereas a virus needs a “ride” from a file or user click.
This 200-201 practice question tests your understanding of security concepts. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which type of malware is designed to spread automatically across networks without user interaction?
Ransomware
Why wrong: Ransomware typically requires user to execute.
Virus
Why wrong: Viruses need a host file and user action.
Trojan
Why wrong: Trojans rely on user deception.
Worm
Worms spread autonomously across networks.
Answer choices
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 standalone malware program that replicates itself to spread to other computers over a network, often exploiting vulnerabilities without any user intervention. Unlike viruses, worms do not require a host file or user action to propagate, making them capable of rapid, automated spread across networks.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
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 typically requires user to execute.
Virus
Why it's wrong here
Viruses need a host file and user action.
Trojan
Why it's wrong here
Trojans rely on user deception.
Worm
Why this is correct
Worms spread autonomously across networks.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Cisco often tests the distinction between a virus and a worm, where the trap is that candidates confuse 'self-replicating' with 'requires a host file,' leading them to incorrectly choose virus instead of worm for autonomous network spread.
Detailed technical explanation
Worms often exploit network services or operating system vulnerabilities, such as buffer overflows in SMB (Server Message Block) or RPC (Remote Procedure Call) services, to execute arbitrary code on remote systems. For example, the WannaCry worm used the EternalBlue exploit (MS17-010) to propagate across networks without user interaction, scanning for vulnerable systems and infecting them automatically. This self-propagating behavior distinguishes worms from other malware types that require a delivery mechanism or user action.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the 200-201 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Security Concepts — study guide chapter
Learn the concepts, then practise the questions
Security Concepts practice questions
Targeted practice on this topic area only
All 200-201 questions
507 questions across all exam domains
Cisco CyberOps Associate 200-201 study guide
Full concept coverage aligned to exam objectives
200-201 practice test guide
How to use practice tests most effectively before exam day
Related practice questions
Use these pages to review the topic behind this question. This is how one missed question becomes focused revision.
Practise 200-201 questions linked to Security Policies and Procedures.
Practise 200-201 questions linked to Security Concepts.
Practise 200-201 questions linked to Security Monitoring.
Practise 200-201 questions linked to Host-Based Analysis.
Practise 200-201 questions linked to Network Intrusion Analysis.
Practise 200-201 questions linked to 200-201 fundamentals.
Practise 200-201 questions linked to 200-201 scenario.
Practise 200-201 questions linked to 200-201 troubleshooting.
Practice this exam
Short sessions build daily habit. Longer sessions build exam-day stamina. Try a timed session to simulate real conditions.
FAQ
Security Concepts — This question tests Security Concepts — Read the scenario before looking for a memorised answer..
The correct answer is: Worm — A worm is a standalone malware program that replicates itself to spread to other computers over a network, often exploiting vulnerabilities without any user intervention. Unlike viruses, worms do not require a host file or user action to propagate, making them capable of rapid, automated spread across networks.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Last reviewed: Jun 25, 2026
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.
Question Discussion
Share a tip, memory trick, or ask about the reasoning behind this question. Do not post real exam questions, leaked content, braindumps, or copyrighted exam material. Comments are moderated and may be removed without notice.
Sign in to join the discussion.