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Security & Protection – OS interview questions

Security & Protection interview questions for placements and exams.

Subject: OSDifficulty: Mixed9 questions in this set

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OS – Security & Protection questions (9)

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1. Which term describes a secure area of a main processor that provides isolated execution for code and data, even from higher-privileged code on the system?

Difficulty: MediumType: MCQTopic: OS Security

A Trusted Execution Environment (TEE) is a hardware-supported secure area of a processor that ensures confidentiality and integrity of code and data inside it, shielding them from even higher privilege software like the OS kernel. TEEs represent modern OS security extensions and show up in advanced interview discussion.

2. Which access control model enforces that subjects cannot read up and cannot write down, typically used in high-security systems?

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Security & Protection – OS interview questions

Set overview

OS – Security & Protection questions (9)

1. Which term describes a secure area of a main processor that provides isolated execution for code and data, even from higher-privileged code on the system?

2. Which access control model enforces that subjects cannot read up and cannot write down, typically used in high-security systems?

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3. Explain the difference between kernel mode and user mode in an operating system and why the distinction matters for security.

4. Which principle states that a process or user should be given no more access than necessary to perform its job?

5. What is the W^X (Write XOR Execute) policy in operating systems and how does it enhance security?

6. What is a rootkit and how can operating system design help defend against it?

7. What does secure boot in modern operating systems ensure?

8. What is the purpose of kernel patch protection (KPP) as implemented in some operating systems?

9. Why is the Principle of Least Common Privilege important in operating system security and how would you implement it in OS design?

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Security & Protection – OS interview questions

Set overview

1. Which term describes a secure area of a main processor that provides isolated execution for code and data, even from higher-privileged code on the system?

2. Which access control model enforces that subjects cannot read up and cannot write down, typically used in high-security systems?

Continue your preparation

3. Explain the difference between kernel mode and user mode in an operating system and why the distinction matters for security.

4. Which principle states that a process or user should be given no more access than necessary to perform its job?

5. What is the W^X (Write XOR Execute) policy in operating systems and how does it enhance security?

6. What is a rootkit and how can operating system design help defend against it?

7. What does secure boot in modern operating systems ensure?

8. What is the purpose of kernel patch protection (KPP) as implemented in some operating systems?

9. Why is the Principle of Least Common Privilege important in operating system security and how would you implement it in OS design?

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