📝 Network devices in Application I/O Interface

Q1. Which instruction restores the CPU state after handling an interrupt?

💡 Difficulty: easy | ✅ Correct: A

Q2. A kernel critical section must defer interrupts from a network card until it finishes updating a shared buffer. Which mechanism should the OS use?

💡 Difficulty: medium | ✅ Correct: B

Q3. A server receives both a high‑priority timer interrupt and a low‑priority network packet interrupt simultaneously. Which handling order maximizes system responsiveness?

💡 Difficulty: hard | ✅ Correct: C