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📝 Vectored I/O in in Application I/O Interface

📖 From Operating System • 13. I/O Systems • 8 questions available

Practice MCQs for Vectored I/O in in Application I/O Interface. 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
2
Hard Questions

📝 Sample Questions

Q1. A computer has a keyboard, a network card, and a disk controller. When any device raises an interrupt, the CPU must quickly find the correct handler. Which advantage does vectored I/O provide in this situation?

🔹 A. It eliminates the need for an interrupt controller.
🔹 B. It supplies the handler address directly, avoiding polling.
🔹 C. It guarantees that all devices are serviced simultaneously.
🔹 D. It reduces the CPU clock speed required for I/O.

💡 Difficulty: easy | ✅ Correct: B

Q2. In a server handling 200 peripheral devices, which method most effectively minimizes interrupt latency when using vectored I/O?

🔹 A. Poll each device sequentially after every instruction.
🔹 B. Use a single global interrupt handler that checks a status register.
🔹 C. Assign each device a unique priority level but use non‑vectored interrupts.
🔹 D. Provide each device its own vector entry so the CPU jumps directly to its handler.

💡 Difficulty: medium | ✅ Correct: D

Q3. Assume the interrupt vector table starts at memory address \(0x8000\). Each vector entry occupies 4 bytes. What address will the CPU jump to for vector number 12?

🔹 A. \(0x8030\)
🔹 B. \(0x8010\)
🔹 C. \(0x8028\)
🔹 D. \(0x8040\)

💡 Difficulty: hard | ✅ Correct: A

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🔗 Related Topics

📝 Overview of I/O Systems📝 I/O Hardware in I/O Systems📝 Polling in I/O Hardware📝 Interrupts in I/O Hardware📝 Direct memory access in I/O Hardware
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