📝 Application I/O Interface

Q1. When an interrupt is detected, what is the first action the CPU performs?

💡 Difficulty: easy | ✅ Correct: A

Q2. A kernel needs to postpone a low‑priority network interrupt while a critical section runs. Which technique enables this behavior?

💡 Difficulty: medium | ✅ Correct: B

Q3. A processor executes one million instructions per second and checks the interrupt line after each instruction. If an interrupt occurs every 2,000 instructions, how many interrupts does the CPU see each second?

💡 Difficulty: hard | ✅ Correct: C