VNSGU / Saurashtra University · Operating Systems
Download BCA Sem 4 Operating Systems previous year question papers (2019–2024) from VNSGU — Veer Narmad South Gujarat University. Free PDF preview and download with verified step-by-step solutions.
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INFORMATION SYSTEMS· 180
INFORMATION SYSTEMS· 180
Information Systems· 180
Operating System types and functions, Process states and Process Control Block (PCB), CPU Scheduling algorithms (FCFS, SJF Preemptive and Non-Preemptive, Round Robin, Priority), Process Synchronization (Critical Section problem, Semaphores), Deadlocks (four conditions, Deadlock Prevention, Avoidance — Banker's Algorithm, Detection and Recovery), Memory Management (Paging, Segmentation, Virtual Memory, Demand Paging, Page Replacement — FIFO, LRU, Optimal), and Disk Scheduling (FCFS, SSTF, SCAN, C-SCAN).
In OS CPU Scheduling problems, always write the completion time (CT), turnaround time (TAT = CT - AT), and waiting time (WT = TAT - BT) in a clear table next to your Gantt chart for maximum step marks.
Important Exam Focus: CPU Scheduling problem drawing Gantt chart and calculating Average Waiting Time and Turnaround Time for FCFS, SJF, and Round Robin; Banker's Algorithm for Deadlock Avoidance with Allocation, Max, Available, and Need matrices; Page Replacement problem calculating page faults for FIFO, LRU, and Optimal; Disk Scheduling calculation for SCAN and SSTF.