Consider a system using preemptive priority scheduling with multiple real-time and user-level processes. Priority inheritance protocol is implemented.
I. Priority inversion can occur when a low-priority process holds a resource that a high-priority process needs. II. Under priority inheritance, the low-priority process temporarily inherits the higher priority to avoid blocking. III. Priority inversion can be completely avoided if all processes are scheduled in a round-robin fashion. IV. Starvation may still occur for low-priority processes even with priority inheritance.
Which of the statements are correct?
I. Priority inversion can occur when a low-priority process holds a resource that a high-priority process needs.
II. Under priority inheritance, the low-priority process temporarily inherits the higher priority to avoid blocking.
III. Priority inversion can be completely avoided if all processes are scheduled in a round-robin fashion.
IV. Starvation may still occur for low-priority processes even with priority inheritance.
Which of the statements are correct?
Last updated Jun 24, 2026