📝 Protection and Security

📖 From Operating System • 1. Introduction to Operating System • 14 questions available

Practice MCQs for Protection and Security. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-04

Easy Questions

Medium Questions

Hard Questions

Q1. What is the fundamental distinction between 'protection' and 'security' in operating system design?

🔹 A. Protection controls access to resources by authorized users, while security defends against malicious attacks from unauthorized entities.

🔹 B. Security is an internal mechanism for resource allocation, while protection handles external network threats.

🔹 C. Protection deals with hardware faults, while security deals with software bugs.

🔹 D. There is no significant difference; the terms are used interchangeably in modern OS literature.

💡 Difficulty: easy | ✅ Correct: A

Q2. In the context of an Access Matrix model, what do the rows and columns typically represent?

🔹 A. Rows represent domains (or subjects), and columns represent objects.

🔹 B. Rows represent objects, and columns represent domains (or subjects).

🔹 C. Rows represent rights, and columns represent users.

🔹 D. Rows represent users, and columns represent groups.

💡 Difficulty: medium | ✅ Correct: A

Q3. What is a 'Privilege Escalation' attack?

🔹 A. An exploit that allows a user with limited privileges to gain higher-level permissions (e.g., root or admin) on the system.

🔹 B. An attack that increases the network bandwidth available to a user.

🔹 C. An attack that upgrades the hardware of the server remotely.

🔹 D. An attack that forces the system to run more processes simultaneously.

💡 Difficulty: hard | ✅ Correct: A

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