Osmania University (OU) 2007 B.C.A Computer Application DATA COMMUNICATION AND NETWORKING - Question Paper

PART - A

1. List the 3 functions of resource management.

2. List any 3 kinds of interrupts.

3. List any 3 resources of a virtual computer.

4. Expand SPOOL.

5. The sharing of physical resources by more than 1 process is called __

6. What is the purpose of Iseek system call ?

7. provide any 1 cause for the process to get blocked.

8. Which IPC trend is more suitable for accessing and updating pass word file ?

9. List 4 necessary conditions for dead lock.

10. provide any 1 difference ranging from a process and a thread.

11. When the order of process completion does make a difference in results, the issue is called _______

12. The output of compiler is called as _______

13. List 2 types of external symbols.

14. provide an advantage of runtime dynamic linking.

15. Expand TLB.

16. _______ is an operating system process that wakes up periodically and perform operation.

17. _____is a program in execution.

18. ______is an area in a virtual address space that contains data used for 1 purpose, that is , a code module, an array or a table.

19. A _______is a synchronization primitive with 2 operations : wait and signal.

20. ____is a software that communicates with a device controller.

21. ____is a unit of transfer ranging from disk drive and main memory during a single I/O operation.

22. _____is the physical movement of read/write head in a disk system to the cylinder where the next read/write will takes place.

23. Expand FAT.

24. _______ is the activity of making sure that a user is really who he/she is.

25. List any 1 disadvantage of client - server model.

PART - B

2 a) discuss the flow of control during a system call. 6m

b) discuss what process dispatching is 4m

OR

3 a) elaborate the 3 objects the simple operating system implements and what operations are allowed on them. 7m

b) discuss the difference ranging from a program and a process 3m

UNIT -II

4. List and briefly discuss any 5 IPC trends. 10m

OR

5 a) provide any 2 examples of programs that uses threads. 6m

b) Why are semaphores more efficient than message passing ? 4m

UNIT - III

6. define the process of loading a load module for execution. 10m

OR

7. a) define the actions an operating system must take when a page fault interrupt occurs. 6m

b) define the differences ranging from linking and relocation. 4m

UNIT -IV

8. define the layout of a file system. 10m

OR

9. a) define the differences ranging from block devices and character devices.

b) discuss the purposes of a device driver. 5m

UNIT-V

10. a) List out the 4 main tasks of the resource manger. 6m

b) Write notes on access control list. 4m

OR

11 a) How do you construct a protection domain with capability lists. 6m

b) What is a distributed operating system. 4m

Earning:   Approval pending.