Q1. Distinguish between the multiprogramming, multitasking, timesharing and multiprocessing systems.
Q2. In brief describe the Process Control Block (or PCB).
Q3. What do you mean by semaphore? Also describe its use?
Q4. What do you mean by a system call? How it is distinct from the Library Call?
Q5. Distinguish between the physical and logical address.
Q6. Illustrate the meaning of the term busy waiting? describe what other types of waiting are there? Can busy waiting be ignored altogether?
Q7. Illustrate the difference between the logical clock and physical clock? In brief describe with an illustration.