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📝 Non uniform memory access in frame allocation

📖 From Operating System • 9. Virtual Memory • 10 questions available

Practice MCQs for Non uniform memory access in frame allocation. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-26

2
Easy Questions
5
Medium Questions
3
Hard Questions

📝 Sample Questions

Q1. What does the valid‑invalid bit indicate for a page in the page table?

🔹 A. Whether the page is currently in physical memory
🔹 B. The size of the page
🔹 C. The protection level of the page
🔹 D. The process ID owning the page

💡 Difficulty: easy | ✅ Correct: A

Q2. How does demand paging improve memory utilization compared to loading all pages at program start?

🔹 A. It reduces page faults
🔹 B. It ensures only needed pages occupy frames
🔹 C. It increases context switch time
🔹 D. It eliminates the need for a page table

💡 Difficulty: medium | ✅ Correct: A

Q3. Explain why a page‑fault handling routine must update both the valid‑invalid bit and the frame number in the page table after bringing a page from backing store.

🔹 A. Only the valid‑invalid bit needs updating
🔹 B. Only the frame number needs updating
🔹 C. Both must be updated to correctly map virtual to physical addresses
🔹 D. Neither needs updating because the hardware handles it

💡 Difficulty: hard | ✅ Correct: C

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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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