Operating Systems (KCS401) - AKTU Question Paper 2021-22
B.Tech · Semester 4 · Free PDF Download
This is the official AKTU Operating Systems Previous Year Question Paper for B.Tech Semester 4, academic session 2021-22. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.
Course:B.Tech
Semester:Semester 4
Session:2021-22
University:AKTU / UPTU
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Questions Asked in 2021-22
Operating Systems (KCS401) — complete question paper
Section AAttempt all q u e s t i o n s i n b r i e f . 2*10 = 20
- aDefine Operating system a nd mention its major functions. 2 2
- bBriefly define the term Real Time Operating System. 2 1
- cWhat do you mean by Concurrent Processes? 2 2
- dDefine Seek time and Latency time. 2 1
- eWhat do we need Scheduling? 2 3
- fWhat are the Performance Cr iteria in CPU Scheduling? 2 3
- gExplain the Logical address space and Physical address spac e diagrammatically
- hExplain in brief about the Mul tiprogramming with fixed partitions. 2 4 (i) What do you mean by the safe st ate and an unsafe state? 2 5 (j) What do you mean by the I/O Buffering? 2 5
Section BAttempt any three o f t h e f o l l o w i n g : 10*3 = 30
- aExplain in detail about the File system protection and security. 10 5
- bExplain in detail about the Mutual Exclusion and Critical S ection Problem
- cExplain in detail about the Process Control Block (PCB) in CPU Scheduling
- dExplain in detail about the Disk storage and Disk scheduling. 10 4
- eExplain in detail about the Multiuser Systems and Multithre aded Systems
Section CAttempt any one p a r t o f t h e f o l l o w i n g : 10*1 = 10
- aWrite short notes on following. i) File system protection and security and ii) Linked File allocation methods
- bExplain in detail about the Dining Philosopher Problem. 10 2
- aExplain in detail about the O perating System services. 10 1
- bExplain in detail about the T hreads and their management. 1 0 3
- aExplain about the concept of File concept. Define in detail about the File organization and access mechanism
- bA hard disk having 2000 cylinders, numbered from 0 to 1999. t h e drive is currently serving the request at cylinder 143,and the previous request was at cylinder 125.The status of the queue is as follows What is the total distance (in cylinders) that the disk arm mov es to satisfy the entire pending request for each of the following di sk- scheduling algorithms? (i) SSTF (ii) FCFS
- aExplain in detail about the Inter Process Communication mod els and Schemes
- bExplain in detail about the M onolithic and Microkernel Systems. 10 1
- aExplain in detail about the D eadlock System model and Deadl ock characterization
- bIllustrate the following page-replacement algorithms. i) FIFO ii) Optimal Page Replacement Use the reference string 7, 0,1, 2, 0, 3, 0, 4, 2, 3, 0, 3, 2,1, 2, 0, 1, 7, 0,1 for a memory with three frames
Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.
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