Andhra University 2005 B.Tech Information Technology - Operating Systems - Question Paper

MODEL PAPER

B. Tech (IT) Degree exam

Third Year - 1st Semester

OPERATING SYSTEMS

Time: three hrs
Max Marks: 70

First ques. is Compulsory

ans any 4 from the remaining ques.

All ques. carry equal marks

ans all parts of any ques. at 1 place

1. Briefly discuss the subsequent (7x2=14)
a. Client-Server model of Computing
b. Preemptive scheduling
c. User level threads
d. Thrashing
e. Device drivers
f. Fork svsteni call
g. Asynchronous I/O

2. a. explain the role of operating system as a resource manager.
b. discuss the concept of virtual machine

3. a. Write and discuss monitor solution for producer - consumer issue (10)
b. discuss the role of size of time quantum on round robin scheduling w.rt. response time. (4)

4. a. discuss about swapping and swapping overheads. (4)
b. explain how paged segmentation is implemented. (10)

5. a. discuss how access control lists and capability lists are used as a means of protection. (6)
b. discuss various file allocation methods. (8)

6. a. discuss about various disk scheduling algorithms. (7)
b. discuss about deadlock detection and recovery. (7)

7. a. discuss Unix file system implementation. (10)
b. discuss the difference ranging from character and block devices. (4)

8. a. Briefly discuss about process management in MS-DOS. (8)
b. discuss about various directory structures. (6)

Earning:   Approval pending.