(Operating System)

1. Which allows thrashing, global or local page replacement? And why?

2. Which kernel memory allocation scheme is more likely to allow fragmentation, buddy system or slab allocation? Why?

3. Four well known disk scheduling algorithms are First Come First Serve (FCFS), Shortest Seek Time First (SSTF), SCAN and LOOK. If you were going to implement one of the algorithms for you OS, which would you use and why?

4. Theoretically the Shortest Seek Time First (SSTF) disk scheduling algorithm could result in starvation. How?

5. Often swap space partitions are created on raw partitions and the swap space manager unit maximizes speed rather than space. Why?