📝 Worms is a System and Network Threats

📖 From Operating System • 15. Security • 29 questions available

Practice MCQs for Worms is a System and Network Threats. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-27

Easy Questions

Medium Questions

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📝 Sample Questions

Q1. A network administrator discovers a new worm that spreads by masquerading as a legitimate update server. Which immediate action should the admin take to stop the worm's propagation?

🔹 A. Block outbound traffic to all servers

🔹 B. Update DNS entries to point to the legitimate server

🔹 C. Install a firewall rule that drops packets from the malicious IP

🔹 D. Disable user accounts

💡 Difficulty: easy | ✅ Correct: C

Q2. A worm spreads by masquerading as a legitimate update server. Which immediate action should the admin take to stop the worm's propagation?

🔹 A. Block outbound traffic to all servers

🔹 B. Update DNS entries to point to the legitimate server

🔹 C. Install a firewall rule that drops packets from the malicious IP

🔹 D. Disable user accounts

💡 Difficulty: medium | ✅ Correct: A

Q3. Why does combining replay attacks with message modification increase the attack's impact?

🔹 A. It allows privilege escalation

🔹 B. It reduces detection probability

🔹 C. It speeds worm propagation

🔹 D. It encrypts the traffic

💡 Difficulty: hard | ✅ Correct: A

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🔗 Related Topics

📝 The Security Problem in Operating System 📝 Program Threats in Operating System 📝 Trojan horse 📝 Trap door 📝 Logic bomb

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