RTU Kota B.Tech CSE 5th Semester Operating System Question Paper 2022

RTU Computer Science Operating System 2022 Paper Review

Preparing for the Rajasthan Technical University B.Tech Operating System exam requires a strict understanding of resource allocation and process management. For Computer Science Engineering students, this subject explains how system hardware supports complex software workloads. You cannot optimize database queries or write efficient multi-threaded backend applications without understanding memory paging, CPU context switching, and disk access speeds. The 2022 paper tests your capability to execute Banker algorithm matrices, trace disk arm movements, and calculate waiting times in CPU scheduling. Reviewing this specific branch paper shows you exactly how examiners frame the questions and allocate marks across the core modules. This systematic preparation helps you approach your fifth-semester exam confidently.

Understanding the CSE Branch Exam Pattern

The RTU theory examination is a three-hour paper worth 70 marks. The paper features three distinct sections designed to evaluate both theoretical definitions and quantitative scheduling problems.

• Part A: This section contains ten compulsory questions worth two marks each. You must state the difference between internal and external fragmentation, define a distributed operating system, or list the operations possible on a file under 30 words.
• Part B: You will find seven questions here. You must answer five of them. Each question is worth four marks. Your answers require explaining the necessary conditions for deadlock, differentiating between paging and segmentation, or contrasting short-term and long-term schedulers.
• Part C: This section offers five major questions. You need to answer three. Each question carries ten marks. These require you to solve complex Banker Algorithm matrices for deadlock avoidance, calculate average waiting time for algorithms like First-Come-First-Serve (FCFS) and Shortest Job First (SJF), or trace disk head movement for SCAN and LOOK algorithms.

Core Topics Evaluated in the CSE Paper

The 2022 question paper heavily emphasizes numerical problem-solving. Focus your study time on these specific calculation areas to maximize your exam score.

Process Management and CPU Scheduling

This module evaluates your understanding of how the processor allocates time to active programs. You must master the logic behind scheduling algorithms. Practice calculating the average waiting time and turnaround time for FCFS, SJF, and Round Robin. The 2022 paper specifically asks you to compare these algorithms for a given set of burst times using a time quantum of 10 to find the minimum average waiting time.

Concurrency and Deadlocks

Processes occasionally block each other permanently while waiting for resources. You must memorize the four necessary conditions for deadlock. The most important calculation in this module is the Banker Algorithm. The 2022 paper features a ten-mark question providing an allocation matrix and a maximum requirement matrix for five processes (P1 to P5) and three resource types. You must calculate the need matrix and find the safe sequence.

Memory Management Algorithms

This section tests your knowledge of how RAM stores process data. Understand contiguous and non-contiguous memory allocation. The 2022 paper asks you to allocate four processes (sizes 357 KB, 210 KB, 468 KB, 491 KB) into six memory partitions (200 KB, 400 KB, 600 KB, 500 KB, 300 KB, 250 KB) using First Fit, Best Fit, and Worst Fit algorithms. You must also study virtual memory concepts, specifically page replacement algorithms like Least Recently Used (LRU).

Disk Scheduling and File Systems

Secondary storage requires optimization to minimize access time. You must know how to trace the movement of the disk arm. Practice calculating the total head movement for FCFS, SCAN, and LOOK algorithms. For example, the 2022 paper provides a 5000-cylinder disk with a starting head position of 143 and a specific queue of pending requests, asking you to map out the exact head path. Study file allocation methods and compare tree-structured versus acyclic graph directories.

Answer Writing Strategy for High Marks

RTU evaluators look for clean Gantt charts, properly structured matrices, and logical step-by-step calculations. Use a blue pen for your general text and explanations, and use a black pen and ruler for drawing diagrams, charts, and memory frame tables.

In Part A, answer directly. If a question asks for the definition of a thread, state clearly that it is a basic unit of CPU utilization consisting of a program counter, a stack, and a set of registers.

In Part B, use clear structural steps. When comparing tree-structured and acyclic graph directories, draw a clean table contrasting their ability to share files, link creation logic, and deletion safety to make your answer easy to scan.

In Part C, precision in execution is critical. When solving a ten-mark disk scheduling problem, do not just write the final track calculations. Draw a clear number line representing the disk cylinders from 0 to 4999. Map the initial head position, draw explicit directional arrows to each requested track, and write out the absolute difference calculations for every single head movement before summing them up. Draw a clean box around your final scheduling times and total head movements.

Time Management During the Exam

Allocate exactly 20 minutes to Part A. Spend 40 minutes addressing the five short-answer questions in Part B. Reserve the remaining 120 minutes for the three long-answer questions in Part C. Drawing multi-step Gantt charts, computing resource matrices, and mapping disk arms requires steady focus and significant time to prevent tracking mistakes. This plan guarantees you 40 minutes per major question, giving you time to cross-verify your matrix additions and memory partition remainders. Use the final 10 minutes to verify your question numbering, ensure all chart axes are labeled correctly, and check that you have not skipped any intermediate processes in your safe sequence calculations.