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Questions and Answers
Which of the following is NOT a valid deadlock prevention scheme?
Which of the following is NOT a valid deadlock prevention scheme?
- Number the resources uniquely and never request a lower numbered resource than the last one requested
- Request and all required resources be allocated before execution (correct)
- Never request a resource after releasing any resource
- Release all resources before requesting a new resource
Which of the following requires a device driver?
Which of the following requires a device driver?
- Cache
- Main memory
- Register
- Disk (correct)
Which of the following is a major part of time taken when accessing data on the disk?
Which of the following is a major part of time taken when accessing data on the disk?
- Rotational latency
- Settle time
- Waiting time
- Seek time (correct)
In relation to threads being defined as 'light weight processes', which of the following is TRUE?
In relation to threads being defined as 'light weight processes', which of the following is TRUE?
Which of the following statements are true?
Which of the following statements are true?
Which page replacement algorithm suffers from Belady’s anomaly?
Which page replacement algorithm suffers from Belady’s anomaly?
In the context of virtual memory, what is thrashing?
In the context of virtual memory, what is thrashing?
What triggers a page fault?
What triggers a page fault?
What is the basis of CPU scheduling?
What is the basis of CPU scheduling?
How is virtual memory defined?
How is virtual memory defined?
If a computer system supports 32-bit virtual addresses and physical addresses, what can be true if the designers decide to eliminate virtual memory?
If a computer system supports 32-bit virtual addresses and physical addresses, what can be true if the designers decide to eliminate virtual memory?
What is the main function of the kernel in an operating system?
What is the main function of the kernel in an operating system?
When a process is in a 'Blocked' state waiting for some I/O service, where does it go when the service is completed?
When a process is in a 'Blocked' state waiting for some I/O service, where does it go when the service is completed?
What is the term used for the interval from the time of submission of a process to the time of completion?
What is the term used for the interval from the time of submission of a process to the time of completion?
If the page size in a memory management system increases, what happens to the internal fragmentation?
If the page size in a memory management system increases, what happens to the internal fragmentation?
Which type of operating system guarantees that critical tasks must be completed within a specific timeframe?
Which type of operating system guarantees that critical tasks must be completed within a specific timeframe?
In which type of operating system do users not interact with the computer directly?
In which type of operating system do users not interact with the computer directly?
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