CS 3733 Operating Systems, Spring 2006 Exam 2 Comments

Grade distribution:

• 90-99: 3
• 80-89: 6
• 70-79: 11
• 60-69: 6
• 50-59: 2
• below 50: none
• Average: 76

1. 3b) Remember that sigsuspend also changes the process signal mask.
2. 4d) This is asking about implementation. Mention forks or threads.
3. 5a) You should get a number for this. You should not need a calculator to multiply .98 by 1 or .02 by 10. You should be able to add three simple numbers together.
4. 5c) Address translation using partitions is very fast and just reuqires an add and a compare.
5. 6) This problem is not about virtual memory. There is no valid bit.
6. 6d and e) The answers to these should be the same.
7. 6f) Page table entries do not contain page numbers along with the frame numbers. The TLB entries do.