📝 Windows 7 Energy efficiency for computers

📖 From Operating System • 19. Windows 7 • 8 questions available

Practice MCQs for Windows 7 Energy efficiency for computers. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-27

Easy Questions

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📝 Sample Questions

Q1. What is the primary benefit of reducing the memory footprint of the Desktop Window Manager (DWM) in Windows 7?

🔹 A. Faster boot time

🔹 B. Lower power consumption

🔹 C. Increased screen resolution

🔹 D. Enhanced security

💡 Difficulty: easy | ✅ Correct: B

Q2. Why does moving graphical user interface (GUI) components from kernel mode to user mode generally improve energy efficiency?

🔹 A. It allows the CPU to enter low‑power states more frequently.

🔹 B. It reduces the need for hardware interrupts.

🔹 C. It eliminates the need for graphics drivers.

🔹 D. It increases the clock speed of the processor.

💡 Difficulty: medium | ✅ Correct: A

Q3. How does fast user switching in Windows 7 contribute to overall system energy efficiency?

🔹 A. It allows multiple users to keep the display on simultaneously, increasing power use.

🔹 B. It enables background processes to continue running without requiring a full login, reducing CPU wake‑ups.

🔹 C. It forces the system to reboot each time a user changes, leading to higher energy consumption.

🔹 D. It disables power‑saving features while users are logged in.

💡 Difficulty: hard | ✅ Correct: A

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🔗 Related Topics

📝 History of Windows 7 📝 Security in Windows 7 📝 Reliability of Windows 7 📝 Windows and POSIX application compatibility 📝 Windows 7 designed for High performance

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