operating system

[5.22 – 2007 : 2 M]Question: A virtual memory system uses FIFO page replacement and allocates fixed frames to a process. Consider statements:P : Increasing the number of page frames allocated to a process sometimes increases the page fault rate.Q : Some programs do not exhibit locality of reference.Which one is TRUE?(a) Both P and

[2018 : 1 M]Question3.13: Consider a system with 3 processes that share 4 instances of the same resource type. Each process can request a maximum of K instances. Resource instances can be requested and released only one at a time. The largest value of K that will always avoid deadlock is ? Answer: 2 Reason:Formula

Q 3.1 [1992 : 2M] – Deadlock Free Maximum Processes Complete Question:A computer system has 6 tape drives, with n processes competing for them. Each process may need 3 tape drives. The maximum value of n for which the system is guaranteed to be deadlock free is(a) 2(b) 3(c) 4(d) 1 Answer: (a) 2 Solution:Formula:

OS Deadlock – 4 Conditions and Banker’s Algorithm for GATE CSE 2026 Deadlock is most important topic of Operating System for GATE. 2-3 marks every year. What is Deadlock? Deadlock means 2 or more processes waiting for each other forever. No one finishes. Example: Process P1 holds Resource R1 and wants R2. Process P2 holds

Q31. [GATE 2015] Multilevel Feedback Queue me kaunsa queue sabse high priority pe hota hai?Answer: Shortest Burst Time wala / System Process queueSolution: MLFQ me system processes ko highest priority milti hai, fir interactive, fir batch. Jo process TQ pura use kar le use neeche wale queue me bhej dete hain. Q32. [GATE 2016] Multilevel

Ques 1.FCFS PYQ – GATE 2026 (Set-1) – 2 MarksQuestion: Consider a system which has to execute two types of processes. The first type, Actuators (A), requires a CPU burst of 6 seconds. The second type, Controllers (C), requires a CPU burst of 8 seconds. A new process of type A arrives at time t

DBMS ki tarah OS bhi GATE CSE me 8-10 marks ka hai. Aaj hum Chapter 1 start kar rahe hain – Process Scheduling. What is Process Scheduling? OS ka main kaam CPU ko kabhi khali na rehne dena. Iske liye OS decide karta hai kaunsa process kab chalega. Isko hi Scheduling kehte hain. Process Scheduling