Write any five differences between time sharing and real time operating systems.

Define an operating system. Write and explain any three critical functions of operating systems.

Compare and contrast the use of monitors and semaphores operations.

Explain in detail any two disk scheduling mechanisms.

3. Define the term process. List and explain the different process states. Draw the process states transition diagram and explain it in brief.

4. What is a deadlock? Explain with an example deadlock detection and prevention methods.

Explain mutual exclusion problems with an example.

Explain in brief about any three file organization techniques.

6. Differentiate between paging and segmentation. Explain how protection is ensured in paging scheme.

7. Explain Paging algorithm in detail, with an example.

8. What is virtual memory Describe Page Replacement algorithm with an example.

9. Explain the following:

File protection methods

Directory structure of UNIX

10. Write short notes on any two of the following:

UNIX Kernel

Device Drivers

Windows NT