M.C.A DEGREE EXAMINATION
OPERATING SYSTEMS
SECOND YEAR - SECOND SEMESTER
GUESS PAPER

(Effective from the admitted batch of 2000 - 2001)

Time: Three Hours
Maximum: 75 Marks

First Question is compulsory
Answer any FOUR from the remaining questions

All questions carry equal marks.
Write all bits of the first question at one place.
1.
a. Multiprogramming OS
b. Process Control Block
c. Semaphore
d. Thread
e. Segmentation
f. Disk Access Time

2. Explain Process management in multiprocessor operating systems.

3. What is a scheduler? Explain the primary objective of scheduling. How many types of schedulers coexist in a complex operation system? Explain.

b. Explain First come, First served (FCFS) and Round Robin scheduling algorithms.

4. Write a note about Deadlock Avoiding, Detection and Recovery

5. Describe what is Belady's anomaly. Give an example that illustrates anomalous behavior of FIFO.

6. What is concurrent programming? Discuss concurrent programming in ADA.

7. What are the advantages of Virtual memory? Write about Virtual Storage implementation using Paging and Segmentation

8.
a. Discuss about Unix File System
b. (b) Explain the following:
(i) Digital signatures
(ii) RSA algorithm