a)Unit 1Discuss the functions of operating system.
a)Unit 1
Discuss the functions of operating system.
b)Unit 1List and explain the types of system calls.
b)Unit 1
List and explain the types of system calls.
Previous Year Question Paper
CY-404 - Operating Systems
June 2023•CSCY•SEMESTER-4
June 2023
Max Marks:
Duration:
a)Unit 1Discuss the characteristics of operating system.
a)Unit 1
Discuss the characteristics of operating system.
b)Unit 2Write and explain the process states with a neat sketch.
b)Unit 2
Write and explain the process states with a neat sketch.
a)Unit 2Define semaphore. How does the semaphore work. Illustrate with an example.
a)Unit 2
Define semaphore. How does the semaphore work. Illustrate with an example.
b)Unit 2List the conditions that must be present for deadlock to occur and for each condition give brief example or reason that illustrate the disadvantage in preventing the condition.
b)Unit 2
List the conditions that must be present for deadlock to occur and for each condition give brief example or reason that illustrate the disadvantage in preventing the condition.
a)Unit 3Differentiate between internal and external fragmentation.
a)Unit 3
Differentiate between internal and external fragmentation.
b)Unit 3Explain the procedure that ensure protection using paging.
b)Unit 3
Explain the procedure that ensure protection using paging.
a)Unit 3Write short notes on memory management in UNIX.
a)Unit 3
Write short notes on memory management in UNIX.
b)Unit 4Suppose the head of a moving head disk with 200 tracks, numbered 0 to 199, is currently serving a request at track 143 and has just finished a request at track 125. If the queue of requests is kept in FIFO order:
86, 147, 91, 177, 94, 150, 102, 175, and 130
What is the total head movement to satisfy these requests for the FCFS disk scheduling algorithms?
b)Unit 4
Suppose the head of a moving head disk with 200 tracks, numbered 0 to 199, is currently serving a request at track 143 and has just finished a request at track 125. If the queue of requests is kept in FIFO order: 86, 147, 91, 177, 94, 150, 102, 175, and 130 What is the total head movement to satisfy these requests for the FCFS disk scheduling algorithms?
Unit 4Discuss in brief the following diskspace allocation methods:
a) Linked
b) Indexed
Unit 4
Discuss in brief the following diskspace allocation methods: a) Linked b) Indexed
a)Unit 5Explain in detail about asynchronous operations in I/O management.
a)Unit 5
Explain in detail about asynchronous operations in I/O management.
b)Unit 5List out the differences between distributed and multiprocessor operating systems.
b)Unit 5
List out the differences between distributed and multiprocessor operating systems.
Unit 3Write short notes on any two of the following:
a) Utility programs
b) Virtual concurrency
c) Paged segmentation
d) File Systems in UNIX
Unit 3
Write short notes on any two of the following: a) Utility programs b) Virtual concurrency c) Paged segmentation d) File Systems in UNIX