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HW 1 Q1. What is meant by the term Application Programs? How it is different from System Programs? Q2. What is PCB stands for? What information is stored in PCB ? And how PCB is used in context switch? Q3. CPU Scheduling Compute Average waiting time and average turnaround time for the above set of processes using: a) FCFS scheduling b) S.FF c) Priority scheduling d) Round Robin with quantum 2 Then write your comments O4. Compute average waiting time and average turnaround time using Round Robin scheduling algorithm a) Quantum = 2 b) Quantum = 1 Then write your comments Q5. Consider a multi-level queue in a single-CPU system. The first level is given a quantum of 6 ms, the second one, a quantum of 12ms, the third is scheduled FCFS. Assume 6 processes arrive all at time zero with the following burst times (in ms) in order: 4,7,12,20,25 and 30. 1. Draw the Gantt chart for each queue level 2. Compute the average waiting time 3. Compute the average turnaround time Important Hint All processes will be given a quantum of 6ms (first level), in case a process needs more burst time then it will be given a chance in second level (its quantum 12ms ) if not yet terminated it enqueues in the third level