📝 Multiple users in File Sharing

📖 From Operating System • 11. File System Interface • 11 questions available

Practice MCQs for Multiple users in File Sharing. 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 term describes a data structure that holds the first key of each block to enable fast location of records?

🔹 A. Pointer

🔹 B. Index

🔹 C. Buffer

🔹 D. Cache

💡 Difficulty: easy | ✅ Correct: B

Q2. Why does keeping an index in memory reduce I/O operations when searching a large file?

🔹 A. Because the index eliminates the need to read any data blocks

🔹 B. Because the index allows the system to locate the correct block with a single disk read

🔹 C. Because memory is faster than disk, so all I/O is avoided

🔹 D. Because the index compresses the file size

💡 Difficulty: medium | ✅ Correct: A

Q3. How does a multi‑level index (index of index) improve search performance compared to a single‑level index?

🔹 A. It reduces the number of disk accesses by first locating a secondary index block, then the data block

🔹 B. It eliminates the need for any disk access

🔹 C. It stores the entire file in memory

🔹 D. It doubles the size of the index for redundancy

💡 Difficulty: hard | ✅ Correct: B

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🔗 Related Topics

📝 File attributes concepts 📝 File operations concepts 📝 How many File types in file system 📝 File structure in file system 📝 Internal file structure

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