1. Introduction to Operating System - Operating System

📖 From Operating System • 246 questions available

Practice MCQs for 1. Introduction to Operating System. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-04

Easy Questions

148

Medium Questions

Hard Questions

📝 Topics in this Chapter

📝 Sample Questions

Q1. What is 'Read Lookahead' in disk controllers?

🔹 A. The controller reads extra blocks following the requested block into its internal buffer, anticipating that the host will request them next (sequential access). This hides latency for subsequent reads.

🔹 B. It looks ahead in time.

🔹 C. It predicts the future.

🔹 D. It reads backwards.

💡 Difficulty: easy | ✅ Correct: A

Q2. How does 'Thermal Throttling' protect SSDs?

🔹 A. When the SSD controller detects high temperatures, it deliberately slows down I/O operations (reduces queue depth or clock speed) to reduce heat generation, preventing hardware damage.

🔹 B. It heats up the drive.

🔹 C. It cools the drive with fans.

🔹 D. It stops the drive.

💡 Difficulty: medium | ✅ Correct: A

Q3. What is 'Poll Mode Driver' (PMD)?

🔹 A. A driver that disables interrupts and continuously polls the device status registers in a loop. Used in high-performance DPDK/SPDK environments to eliminate interrupt latency and overhead.

🔹 B. It drives polls.

🔹 C. It polls flowers.

🔹 D. It stops the driver.

💡 Difficulty: hard | ✅ Correct: A

⬆️ View all questions in the quiz below

🚀 Start Quiz 📝 Practice Mode