CS 3733 Operating Systems, Spring 2008 Exam 1 Comments

Grade distribution:

• 90-99: 4
• 80-89: 7
• 70-79: 4
• 60-69: 4
• below 60: 1
• Average: 78

• Problem 1a: You needed to have something here about having multiple processes in memory.
• Problem 2: File descriptor 3 should read from the pipe, while 4 should write to the pipe. For Part d), the new pipe only connects to the parent.
• Problem 3a: There are three aspects here:
      You cannot tell which process will execute first.
      Reading is not necessarily atomic.
      Each process can read 1, 2, or 3 bytes.
• Problem 5: The best answers for b) and c) are increase. I took off one point if one was increase and the other was remains the same.