SECTION - A

1. Define Operating System.

2. What is system call in OS.

3. What is process in OS. Briefly Explain process management.

4. What is a semaphore.

5. What do you understand by contiguous allocation in memory management.

6. Briefly Explain Page replacement alogorithm.

7. Explain the conept of demand paging

8. Explain the usage of any 5 directory related commands in bash.

9. Briefly list the shell responsibilities with reference to Bourne Aqain Shell (BASH)

10. Write a shell script that checks whether the entered character is a vowel (ac.i,ou) or not

SECTION - B

11. List and Explain the goals of operating system.

12. Explain the concept of Real Time Operating System (RTOS) Explain the usage and application areas of RTOS

13. Draw and describe the process states in process management?

14. Explain the difference between pre-emptive and non-pre-emptive scheduling. Give Examples.

15. Explain the concept and usage of virtual memory.

16. Explain Logical versus Physical address in Memory Management. Hence explain the working of Memory management unit.

OR

 What is a dead lock in process management. Explain methods for handling deadlocks.

17. What is a process control block (PCB) in Linux. Explain the role of PCB when switching from one process to another.

OR

Explain the system call interfaces for process management. Explain the usage of 'Fork" and "exit".

18. What is a shell script. Write a shell script for a simple calculation program that can add, subtract, multiply

OR

 

Divide two numbers as desired by the user. Add Comment lines to explain what each part of the shell script is doing in the program.