Operating System 2021 – BSc Computer Science Part 2 (MJPRU)
Total No. of Questions : 9] [Total No. of Printed Pages : 4
Paper code: 13513
1513
B.Sc. (Computer Science) (Part 2)
Examination, 2021
Paper No. 2.1
OPERATING SYSTEM
Time: 
[Maximum Marks: 50
Note: Attempt all sections as directed.
Section-A
Note: Attempt any two questions.
1. What do you mean by operating system, discuss various kinds of operating system in detail?15 each
2. (a) What is file. Write various allocation methods
(b) Discuss various directory system?
3. Consider the following snapshot of a system:
| Allocation | Max | Available | |||||||
|---|---|---|---|---|---|---|---|---|---|
| A | B | C | A | B | C | A | B | C | |
| P0 | 0 | 1 | 0 | 7 | 5 | 3 | 3 | 3 | 2 |
| P1 | 2 | 0 | 0 | 3 | 2 | 2 | |||
| P2 | 3 | 0 | 2 | 2 | 1 | 1 | |||
| P3 | 2 | 1 | 1 | 2 | 2 | 2 | |||
| P4 | 0 | 0 | 2 | 4 | 3 | 3 | |||
(a) What is the content of matrix need.
(b) Find the safe sequence for above processes?
4. What do you mean by process? Draw and explain process life cycle with neat diagram?
Section – B
Note: Attempt any one question.20 each
5. (a) What do you mean by base machine?
(b) What is paging? Explain basic method for paging with a neat diagram?
6. Explain virtual demand paging briefly?
7. (a) Discuss any two techniques for deadlock prevention?
(b) Discuss segmentation?
8. (a) What are various mechanisms for resource protection?
(b) Write short notes:
(i) Domain of protection.
(ii) Dynamic protection structures.
9. Write short notes (only three)
(i) DNS
(ii) DHCP
(iii) PDC
(iv) Router
(v) Web Server
(vi) Standalone server
……..End……..
Thank You 🙂
