📝 I/O interlock and page locking

Q1. When a system reserves a fixed percentage of memory for I/O buffers and a user process triggers a page fault while all frames are occupied, which mechanism is typically employed to continue execution?

💡 Difficulty: easy | ✅ Correct: C

Q2. A system allows both user processes and the I/O subsystem to compete for all available memory. When a page fault occurs and no free frames exist, which approach most effectively maintains multiprogramming while minimizing disruption?

💡 Difficulty: medium | ✅ Correct: D

Q3. Under what circumstances is swapping out an entire process preferable to performing individual page replacements?

💡 Difficulty: hard | ✅ Correct: B