Solved question paper for OS May-2025 (B-TECH 6th)
Solved Question Paper
Operating system May-2025
PTU • B-TECH • Electronics and Communication Engineering • 6th • May-2025
operating system previous year question papers on BRpaper are organized for students of Punjab Technical University’s Bachelor of Technology program in the Electronics and Communication Engineering stream, 6th semester. This section makes it easier to browse subject-wise old question papers for operating system, so students can review how questions on topics such as process management, memory management, and scheduling algorithms are typically framed in past exams. Many students search for operating system syllabus while preparing for exams, and this page is built to support exactly that kind of subject-wise browsing and revision. BRpaper is not the official website of Punjab Technical University or any institution, and it does not publish official notices or academic updates.
These Questions are downloaded from www.brpaper.com. You can also download previous years question papers of 10th and 12th (PSEB & CBSE), B-Tech, Diploma, BBA, BCA, MBA, MCA, M-Tech, PGDCA, B-Com, BSc-IT, MSC-IT.
PART-A
1. Introduction to Operating system, Role of Operating System as resource manager, function of
kernel and shell, operating system structures, views of an operating system.
2. Process management: CPU scheduling, Scheduling Algorithms, PCB, Process synchronization,
Deadlocks, Prevention, Detection and Recovery.
3. Memory Management: Overlays, Memory management policies, Fragmentation and its types,
Partitioned memory managements, Paging, Segmentation, Need of Virtual memories, Page
replacement Algorithms, Concept of Thrashing.
PART-B
4. Device Management: I/O system and secondary storage structure, Device management policies,
Role of I/O traffic controller, scheduler.
5. File Management: File System Architecture, Layered Architecture, Physical and Logical File
Systems, Protection and Security.
6. Brief study to multiprocessor and distributed operating systems.
7. Case Studies: LINUX / UNIX Operating System and Windows based operating systems.
Solved Questions
Solved-
Differentiate between long term scheduler from short term scheduler.Very Short Answer 2 Marks May-2025 • PTU B-TECH
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Distinguish between a process and a program.Very Short Answer 2 Marks May-2025 • PTU B-TECH
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What is the difference between a page table and a page frame?Very Short Answer 2 Marks May-2025 • PTU B-TECH
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What are Semaphores? Why are they used?Very Short Answer 2 Marks May-2025 • PTU B-TECH
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May 2024 What are semaphores? How can they be used to implement mutual exclusion?
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May 2023 What are semaphores? How can they be used to implement mutual exclusion?
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What is the need of page replacement?Very Short Answer 2 Marks May-2025 • PTU B-TECH
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Explain the concept of locality of reference.Very Short Answer 2 Marks May-2025 • PTU B-TECH
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May 2023 What do you understand by locality of reference?
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What is boot block? Explain with a diagram.Very Short Answer 2 Marks May-2025 • PTU B-TECH
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What is File concept?Very Short Answer 2 Marks May-2025 • PTU B-TECH
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What are indexed files? How is indexing implemented?Very Short Answer 2 Marks May-2025 • PTU B-TECH
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Explain the difference between time-sharing and multi-programming.Very Short Answer 2 Marks May-2025 • PTU B-TECH
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May 2024 Explain Multi programming and Time Sharing operating systems.
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What are the various views of the operating system? Explain.Long Answer 5 Marks May-2025 • PTU B-TECH
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What is a PCB? What is stored in it? What is its role in the CPU scheduling? Explain.Long Answer 5 Marks May-2025 • PTU B-TECH
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In a variable partition scheme, the operating system has to keep track of all allocated and free space. Suggest a means for achieving this. Describe the effects of new allocations and termination in your suggested scheme.Long Answer 5 Marks May-2025 • PTU B-TECH
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Explain the File Protection and Security methods.Long Answer 5 Marks May-2025 • PTU B-TECH
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Explain the concept of direct memory access in detail.Long Answer 5 Marks May-2025 • PTU B-TECH
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Suppose that a disk drive has 5000 cylinders, numbered 0 to 4999. The drive currently Services a request at cylinder 143 and the previous request was at cylinder 125. The queue of pending request in FIFO order is: 86, 1470, 913, 1774, 948, 1509, 1022, 1750, 130. Starting from the current position, what is the total distance (in cylinders) that the disk arm moves to satisfy all pending requests, for each of the following algorithms a) FCFS b) SSFT c) SCAN d) LOOK e) C-SCAN.Long Answer 10 Marks May-2025 • PTU B-TECH
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Consider the following page-reference string: 1, 2, 3, 2, 5, 6, 3, 4, 6, 3, 7, 3, 1, 5, 3, 6, 3, 4, 2, 4, 3, 4, 5, 1. Indicate the page faults and calculate total number of page faults and successful ratio of FIFO, optimal and LRU algorithms. Assume that there are four frames and initially all the frames are empty.Long Answer 10 Marks May-2025 • PTU B-TECH
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Internal and external fragmentation.Long Answer 10 Marks May-2025 • PTU B-TECH
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Mapping between logical and physical address space.Long Answer 10 Marks May-2025 • PTU B-TECH
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Difference between paging and segmentation.Long Answer 10 Marks May-2025 • PTU B-TECH
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FAQ
Frequently Asked Questions
Answers about this subject, solved papers, and preparation.
01 Where can I find operating system previous year question papers for Bachelor of Technology Electronics and Communication Engineering, 6th semester?
This page lists operating system question papers uploaded for Punjab Technical University Bachelor of Technology Electronics and Communication Engineering, 6th semester, organized for subject-wise browsing where available.
02 Are these official Punjab Technical University question papers?
BRpaper is not the official website of Punjab Technical University. These papers are shared for reference and revision purposes only and are not official university material.
03 How can previous year operating system papers help in exam preparation?
Reviewing past papers can help you understand how questions are typically framed, notice commonly repeated topics, and get a sense of the exam pattern before your own exam.
04 What kind of topics does operating system usually cover?
The question papers here relate to the operating system syllabus set by the university for this course and semester, which typically includes topics such as process management, memory management, and scheduling algorithms.
05 Does this page include a operating system syllabus or solved answers?
This page focuses on providing access to the previous year question papers themselves. A separate question bank or solved answers may not be available for every paper.
06 Can I find papers for other subjects in the same Bachelor of Technology Electronics and Communication Engineering?
Yes, BRpaper organizes papers by university, course, stream, and semester, so you can browse other subjects within the same Punjab Technical University Bachelor of Technology Electronics and Communication Engineering.