📝 Block devices in The Linux System

Q1. What unit of storage does the Linux page cache use to hold file data?

💡 Difficulty: easy | ✅ Correct: C

Q2. A program reads a large file sequentially. Which mechanism ensures that subsequent reads are fast?

💡 Difficulty: medium | ✅ Correct: A

Q3. A device driver for a new block device wants to bypass the page cache for low‑latency writes. Which flag should it use when opening the file?

💡 Difficulty: hard | ✅ Correct: A