📝 Basic mechanism of Memory Mapped Files

📖 From Operating System • 9. Virtual Memory • 21 questions available

Practice MCQs for Basic mechanism of Memory Mapped Files. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-26

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📝 Sample Questions

Q1. What does the copy-on-write (COW) technique primarily aim to reduce when a process forks?

🔹 A. Memory usage

🔹 B. CPU cycles

🔹 C. Disk I/O

🔹 D. Network latency

💡 Difficulty: easy | ✅ Correct: A

Q2. Why are pages that contain executable code typically not marked as copy‑on‑write?

🔹 A. Because they are read‑only and never need a private copy

🔹 B. Because they are too large to copy

🔹 C. Because the OS cannot track execution

🔹 D. Because they cause page faults

💡 Difficulty: medium | ✅ Correct: A

Q3. Why are executable code pages typically shared between parent and child after a fork?

🔹 A. They are read‑only and never need a private copy

🔹 B. They are small enough to fit in cache

🔹 C. They contain no useful data

🔹 D. They are always swapped out

💡 Difficulty: hard | ✅ Correct: A

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🔗 Related Topics

📝 Basic concepts of Demand Paging 📝 Performance of demand paging 📝 Copy on Write in virtual Memory 📝 Basic page replacement in virtual Memory 📝 FIFO page replacement

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