📝 Mutex Locks

📖 From Operating System • 5. Process Synchronization • 49 questions available

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

🔄 Last updated: 2026-07-09

Easy Questions

Medium Questions

Hard Questions

Q1. What is a mutex lock primarily designed to protect against?

🔹 A. Deadlocks.

🔹 B. Race conditions.

🔹 C. Starvation.

🔹 D. Priority inversion.

💡 Difficulty: easy | ✅ Correct: B

Q2. What is the purpose of the `available` variable in a mutex lock?

🔹 A. To store the ID of the process holding the lock.

🔹 B. To indicate whether the lock is available for acquisition.

🔹 C. To count the number of processes waiting for the lock.

🔹 D. To track the time since the lock was acquired.

💡 Difficulty: medium | ✅ Correct: B

Q3. In which environment are spinlocks often employed and why?

🔹 A. In single-processor systems, because they are simple.

🔹 B. In multiprocessor systems, because one thread can spin on one CPU while another executes its critical section on another.

🔹 C. In real-time systems, because they provide predictable timing.

🔹 D. In embedded systems, because they require less memory.

💡 Difficulty: hard | ✅ Correct: B

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