📝 Revocation of Access Rights in protection of Operating System

📖 From Operating System • 14. Protection • 18 questions available

Practice MCQs for Revocation of Access Rights in protection of Operating System. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-27

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📝 Sample Questions

Q1. What is the confinement problem in computer security?

🔹 A. The inability to prevent a program from accessing the network.

🔹 B. The difficulty of ensuring that information cannot leave its original execution environment.

🔹 C. The challenge of encrypting all stored data.

🔹 D. The problem of authenticating users across domains.

💡 Difficulty: easy | ✅ Correct: B

Q2. How does the dynamic creation of domains affect access control in an access‑matrix system?

🔹 A. It adds new rows to the matrix at runtime

🔹 B. It deletes existing columns

🔹 C. It freezes the matrix permanently

🔹 D. It merges domains together

💡 Difficulty: medium | ✅ Correct: A

Q3. How does the concept of “domains” differ from “users” in access‑control terminology?

🔹 A. Domains are the same as users

🔹 B. Domains group processes with identical privileges

🔹 C. Domains are physical machines

🔹 D. Domains store data

💡 Difficulty: hard | ✅ Correct: B

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🔗 Related Topics

📝 Goals of Protection in Operating System 📝 Principles of Protection in Operating System 📝 Domain of Protection in Operating System 📝 Domain structure for protection in Operating System 📝 UNIX example of protection in Operating System

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