RTU Kota B.Tech AI 5th Semester Operating System Question Paper 2025

RTU Artificial Intelligence Operating System 2025 Paper Review

Preparing for the Rajasthan Technical University B.Tech Operating System exam requires a strict understanding of resource allocation and process management. For Artificial Intelligence students, this subject explains how system hardware supports heavy computational workloads. Training large neural networks requires efficient memory paging and concurrent process execution. The 2025 paper tests your capability to calculate waiting times in CPU scheduling, execute Banker algorithm matrices, and trace page fault rates. 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 AI 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 a process and a thread, define virtual memory, or write the conditions for deadlock 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 reader writer problem, drawing the process state transition diagram, or executing the First In First Out page replacement algorithm for a short reference string.
• 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 turnaround time for multi level queue scheduling, or compare disk scheduling algorithms using a moving read write head trace.

Core Topics Evaluated in the AI Paper

The 2025 question paper covers several critical modules that establish the rules for computer resource management. Focus your study time on these specific areas to maximize your 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 First Come First Serve, Shortest Job First, Priority Scheduling, and Round Robin. Examiners heavily test your ability to draw accurate Gantt charts for pre emptive scheduling scenarios.

Concurrency and Process Synchronization

Concurrent execution leads to data inconsistency. You must understand the critical section problem. Study the implementation of hardware and software synchronization tools, specifically Semaphores and Mutex locks. Practice writing the standard code solutions for classic synchronization problems like the Producer Consumer problem and the Dining Philosophers problem.

Deadlocks

Processes occasionally block each other permanently while waiting for resources. You must memorize the four necessary conditions for deadlock: mutual exclusion, hold and wait, no preemption, and circular wait. The most important calculation in this module is the Banker Algorithm. Expect a ten mark question providing an allocation matrix and a maximum requirement matrix. You will need to calculate the need matrix and prove whether the system is in a safe state by finding the safe sequence.

Memory Management and Virtual Memory

This section tests your knowledge of how RAM stores process data. Understand contiguous and non contiguous memory allocation. Study the mechanics of paging and segmentation. The 2025 paper heavily features page replacement algorithms. Practice executing the Least Recently Used and Optimal page replacement algorithms step by step to calculate the total number of page faults for a given memory reference string. Practice calculating the physical address from a logical address using the page table.

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 First Come First Serve, Shortest Seek Time First, SCAN, and C SCAN algorithms. Understand file allocation methods like contiguous, linked, and indexed allocation.

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 context switch, state clearly that it is the process of storing the state of an active process and loading the saved state of a new process so execution can resume.

In Part B, use clear structural steps. When solving a page replacement problem, draw a complete frame table for every memory reference. Label the exact points where a page fault occurs and count them explicitly at the bottom of the table.

In Part C, precision in execution is critical. When solving a ten mark Banker Algorithm problem, clearly separate your matrix subtraction steps. Write down the available resources vector, show the comparison step for every process explicitly, and state the final safe sequence clearly. Draw a clean box around your final scheduling times and page fault counts.

Time Management During the Exam

Allocate 20 minutes to Part A. Spend 40 minutes on 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 tracing disk arms require 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 scheduling timelines. 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 calculations.