Operating System (BCS401) AKTU predicted paper 2026-27
AI-predicted paper for Operating System based on 6 past papers (2018, 2019, 2022, 2023, 2024, 2025). NOT an official AKTU paper. Use as a revision tool only.
Paper pattern
- Section A: Attempt all questions. (14 marks)
- Section B: Attempt any THREE questions out of five. (21 marks)
- Section C: Attempt ONE question from each pair (a or b). (35 marks)
Why these questions
- Unit 3 (CPU Scheduling and Deadlock) dominates — 27% avg weightage
- Asked every year: OS Functions and Structure, Classification of Operating Systems
- Due for comeback: Kernel Types, Semaphores and Test Set
- Low priority (never asked): Cache Memory
- Most repeated topic: CPU Scheduling
Section A – 2-mark questions
- Define a batch processing system?
- Define the term busy waiting.
- What is a safe state and an unsafe state?
- Explain internal and external fragmentation.
- Define seek time and latency time.
- List three components stored in a PCB.
- Explain tree level directory structure.
Section B – sample questions
- Discuss the differences between Batch, Interactive, and Time Sharing Operating Systems with real-world applications.
- Compare and contrast multiprogramming with fixed partitions and variable partitions?
- Define the Critical Section Problem and list the conditions that a solution must satisfy.