📝 User mode scheduling (UMS) and ConcRT in Process management in Window 7

📖 From Operating System • 19. Windows 7 • 9 questions available

Practice MCQs for User mode scheduling (UMS) and ConcRT in Process management in Window 7. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-27

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📝 Sample Questions

Q1. What does APC stand for in the Windows kernel?

🔹 A. Asynchronous Procedure Call

🔹 B. Application Process Control

🔹 C. Automatic Priority Change

🔹 D. Advanced Power Configuration

💡 Difficulty: easy | ✅ Correct: A

Q2. Thread T is waiting on an event with the alertable flag set. An APC is queued to T. Which outcome occurs next?

🔹 A. The APC is executed before the wait returns, then the thread continues

🔹 B. The APC is ignored until the thread exits the wait state

🔹 C. The APC causes the thread to terminate immediately

🔹 D. The APC is executed after the event is signaled, regardless of alertable state

💡 Difficulty: medium | ✅ Correct: D

Q3. When a system queues work to a pool of worker threads instead of executing the DPC directly, which trade‑off is most accurate?

🔹 A. It eliminates all latency associated with DPC execution

🔹 B. It reduces the time spent at high interrupt priority but may increase context‑switch overhead and overall latency

🔹 C. It guarantees that the work will run on the same processor that generated the interrupt

🔹 D. It makes the DPC run at a lower priority than normal threads

💡 Difficulty: hard | ✅ Correct: B

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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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