Page Replacement Algorithms and Virtual Memory Concepts Quiz

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Which of the following is NOT a valid deadlock prevention scheme?

Request and all required resources be allocated before execution

Which of the following requires a device driver?

Disk

Which of the following is a major part of time taken when accessing data on the disk?

Seek time

In relation to threads being defined as 'light weight processes', which of the following is TRUE?

<p>On per-thread basis, the OS does not maintain virtual memory state</p> Signup and view all the answers

Which of the following statements are true?

<p>Preemptive scheduling may cause starvation</p> Signup and view all the answers

Which page replacement algorithm suffers from Belady’s anomaly?

<p>Both LRU and FIFO</p> Signup and view all the answers

In the context of virtual memory, what is thrashing?

<p>Processes on system frequently access pages not in memory</p> Signup and view all the answers

What triggers a page fault?

<p>When a requested page is not in memory</p> Signup and view all the answers

What is the basis of CPU scheduling?

<p>Multiprogramming operating systems</p> Signup and view all the answers

How is virtual memory defined?

<p>Illusion of large main memory</p> Signup and view all the answers

If a computer system supports 32-bit virtual addresses and physical addresses, what can be true if the designers decide to eliminate virtual memory?

<p>The processor cache organization can be made more efficient now</p> Signup and view all the answers

What is the main function of the kernel in an operating system?

<p>To constitute the central core of the operating system</p> Signup and view all the answers

When a process is in a 'Blocked' state waiting for some I/O service, where does it go when the service is completed?

<p>Ready state</p> Signup and view all the answers

What is the term used for the interval from the time of submission of a process to the time of completion?

<p>Turnaround time</p> Signup and view all the answers

If the page size in a memory management system increases, what happens to the internal fragmentation?

<p>Decreases</p> Signup and view all the answers

Which type of operating system guarantees that critical tasks must be completed within a specific timeframe?

<p>Hard Real Time operating system</p> Signup and view all the answers

In which type of operating system do users not interact with the computer directly?

<p>Batch operating system</p> Signup and view all the answers

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