B.TECH - Semester 5 operating systems Question Paper 2019 (apr)
Practice authentic previous year university questions for better exam preparation.
- What are device drivers?
- What is the use of access matrix? Answer one full question from each module.
- (a) Explain about the various functions of operating systems. 10
- (b) Write short notes on the operations of files. 10 Or
- Explain about the various file allocation methods. Module - II
- (a) Assume you have the following jobs to execute with one processor. | Process | Burst time (ms) | Arrival time (ms) | | :--- | :--- | :--- | | 0 | 13 | 0 | | 1 | 15 | 7 | | 2 | 7 | 9 | | 3 | 9 | 11 | | 4 | 11 | 22 | Calculate the average waiting time and average turnaround time if the system use...
- (a) Explain how semaphores can be used to solve Readers-Writers problem. 10
- (b) Explain segmentation with the help of a neat diagram. 10
- Explain bankers algorithm for deadlock avoidance with an example.
- What are time sharing systems? What are the advantages and disadvantages of time sharing systems?
- Why do we require dual mode of operation in OS?
- What are the different operations on directories?
- What are semaphores? What are the various operations on it?
- Explain how swapping is done?
- What do you mean by context switching?
- State the three requirements that a solution to the critical section problem must satisfy.
- How can we guarantee that hold and wait condition does not occur in a system?
- (b) Explain LRU page replacement algorithm with an example. Or
- Explain the following with suitable examples. (a) FCFS Scheduling
- Explain the following with suitable examples. (b) SSTF Scheduling
- Explain the following with suitable examples. (c) Scan Scheduling
- Explain the following with suitable examples. (d) C-Scan Scheduling. Or
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