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📝 RC 4000 operating system

📖 From Operating System • 20. Influential Operating Systems • 9 questions available

Practice MCQs for RC 4000 operating system. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-27

2
Easy Questions
4
Medium Questions
3
Hard Questions

📝 Sample Questions

Q1. What was the size of the drum backing store used by the THE operating system?

🔹 A. 256‑KB word drum
🔹 B. 512‑KB word drum
🔹 C. 1‑MB word drum
🔹 D. 128‑KB word drum

💡 Difficulty: easy | ✅ Correct: B

Q2. A program experiences frequent page faults on the THE system. Which change would most likely reduce the fault rate?

🔹 A. Increase page size to 1024 words
🔹 B. Switch to a FIFO replacement policy
🔹 C. Use the existing LRU policy
🔹 D. Disable paging entirely

💡 Difficulty: medium | ✅ Correct: A

Q3. The system has 3 instances of resource R. Allocation: P1‑1, P2‑1, P3‑0. Maximum needs: P1‑2, P2‑2, P3‑1. Available = 1. P3 now requests 1 instance of R. Which decision keeps the system in a safe state?

🔹 A. Grant the request
🔹 B. Den​y the request
🔹 C. Grant but monitor later
🔹 D. Grant after swapping resources

💡 Difficulty: hard | ✅ Correct: B

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🔗 Related Topics

📝 Feature Migration in Operating Systems📝 Early Computer Systems📝 Dedicated computer systems📝 Shared computer systems📝 Overlapped I/O operating system
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