Unit 3Explain the need for the Process Control Block (PCB) fields.
Unit 3
Explain the need for the Process Control Block (PCB) fields.
Previous Year Question Paper
AD/CD/CS/SD-405 (GS) – Operating Systems
December 2024•CSE•SEMESTER-4
December 2024
Max Marks: 70
Duration: 3 Hours
Instructions:
• Attempt any five questions.
• All questions carry equal marks.
Unit 3Given processes with burst time, priority and arrival time. Find scheduling sequence, turnaround time and waiting time for FCFS, RR(q=3), preemptive SJF.
Unit 3
Given processes with burst time, priority and arrival time. Find scheduling sequence, turnaround time and waiting time for FCFS, RR(q=3), preemptive SJF.
Unit 3How multilevel feedback queue scheduling differs from multilevel queue scheduling.
Unit 3
How multilevel feedback queue scheduling differs from multilevel queue scheduling.
Unit 4What is Resource Allocation Graph? Explain occurrence and avoidance of deadlock among 3 processes and 3 resources.
Unit 4
What is Resource Allocation Graph? Explain occurrence and avoidance of deadlock among 3 processes and 3 resources.
Unit 3Page requests: 1,2,3,5,4,1,2,5,3,2,4,3. With three frames, how many page faults using Optimal Page Replacement?
Unit 3
Page requests: 1,2,3,5,4,1,2,5,3,2,4,3. With three frames, how many page faults using Optimal Page Replacement?
Unit 3/2/4Write short notes on (any two): a) Thrashing b) LRU algorithm c) PCB d) Contiguous and Linked Disk Allocation e) Optimal Page Replacement f) Interrupts g) Multilevel Feedback Queue Scheduling.
Unit 3/2/4
Write short notes on (any two): a) Thrashing b) LRU algorithm c) PCB d) Contiguous and Linked Disk Allocation e) Optimal Page Replacement f) Interrupts g) Multilevel Feedback Queue Scheduling.
Unit 2Define the term 'Directory'. Explain any two schemes of logical directory structures.
Unit 2
Define the term 'Directory'. Explain any two schemes of logical directory structures.
Unit 3When do page-faults occur? Describe the action taken by the OS when page-fault occurs.
Unit 3
When do page-faults occur? Describe the action taken by the OS when page-fault occurs.