STUPIDSID
1 (a)
Explain various system calls with appropriate syntaxes
10 M
1 (b)
Explain mutual exclusion.Also write note on Petersons algorithm.
10 M
2 (a)
Explain Demand Paging.
10 M
2 (b)
What are various disk scheduling algorithms? Explain each one in brief.
10 M
3 (a)
Explain the page replacement policies. Implement LRU, OPT, FIFO for the following sequence: 0, 1, 2, 4, 3, 7, 1, 4, 2, 3. Also calculate hits and faults
10 M
3 (b)
Write note on Buffering Techniques.
10 M
4 (a)
What are preemptive and non-preemptive algorithms?
10 M
4 (b)
Explain DMA in terms of system concurrency. What is its implication on hardware design?
10 M
5 (a)
Write a note on File Access Methods.
10 M
5 (b)
Consider the following snapshot.
| Process | Allocation | MAX | Available |
| P0 | 1 3 5 | 0 6 5 | 6 5 6 |
| P1 | 1 0 0 | 2 1 3 | |
| P2 | 2 0 1 | 3 4 6 | |
| P3 | 4 1 1 | 1 5 2 | |
| P4 | 5 4 3 | 0 0 1 |
Answer the following questions:
- What is the content of matrix need?
- Is the system in safe state?
- If process P1 arrives with a request of (4, 5, 3) can the request be granted?
10 M
6 (a)
Draw and explain architecture of RTOS.
10 M
6 (b)
What is a semaphore? Explain in detail the usage of semaphore and resource acquisition and release.
10 M
7
(c) Monolithic Vs Micro Kernels.
(d) Shared OS configuration for Multiprocessor System.
(d) Shared OS configuration for Multiprocessor System.
10 M
Write Short notes on
7 (a)
Race Condition
5 M
7 (b)
VM Ware
5 M
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