📝 SSL is an example of Implementation of cryptography

📖 From Operating System • 15. Security • 16 questions available

Practice MCQs for SSL is an example of Implementation of cryptography. 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 name of the instruction that performs no operation and is commonly placed before shellcode in a stack‑overflow exploit?

🔹 A. NOP

🔹 B. JMP

🔹 C. CALL

🔹 D. RET

💡 Difficulty: easy | ✅ Correct: A

Q2. Why does overwriting the return address allow an attacker to execute arbitrary code?

🔹 A. It changes the program’s control flow

🔹 B. It corrupts data used by the program

🔹 C. It modifies the heap layout

🔹 D. It triggers an exception

💡 Difficulty: medium | ✅ Correct: A

Q3. How does a stack canary protect against buffer‑overflow attacks?

🔹 A. It detects overflow by checking a known value before returning

🔹 B. It prevents execution of injected code

🔹 C. It encrypts stack contents

🔹 D. It randomizes memory addresses

💡 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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