Which of the following page replacement algorithm selects a page for replacement that will not be used for the longest period of time?

LRU(Least Recently Used) Algorithm
LRU(Least Recently Used) Algorithm − The Least Recently used (LRU) algorithm replaces the page that has not been used for the longest period of time. It is based on the observation that pages that have not been used for long time will probably remain unused for the longest time and are to be replaced.

In which of the page replacement algorithm we use the page which doesn’t occur more frequently in the future is chosen to be replaced with the page in the frame?

Explanation: Optimal page replacement algorithm is also called a Clairvoyant replacement algorithm or Belady’s optimal replacement algorithm. Explanation: The page which doesn’t occur more frequently in the future is chosen to be replaced with the page in the frame.

Which of the basic replacement algorithms replaces the page that has been in the memory the longest?

FIFO Page Replacement Algorithm It is a very simple way of Page replacement and is referred to as First in First Out. This algorithm mainly replaces the oldest page that has been present in the main memory for the longest time.

What is page replacement explain optimal page replacement algorithm?

In operating systems, whenever a new page is referred and not present in memory, page fault occurs and Operating System replaces one of the existing pages with newly needed page. In this algorithm, OS replaces the page that will not be used for the longest period of time in future.

Which of the following is page replacement algorithm *?

First In First Out (FIFO) – This is the simplest page replacement algorithm. In this algorithm, the operating system keeps track of all pages in the memory in a queue, the oldest page is in the front of the queue. When a page needs to be replaced page in the front of the queue is selected for removal.

Which of the following is page replacement algorithm?

Optimal Page Replacement algorithm is the best page replacement algorithm as it gives the least number of page faults. It is also known as OPT, clairvoyant replacement algorithm, or Belady’s optimal page replacement policy.

What is optimal page replacement with example?

Optimal Page replacement – In this algorithm, pages are replaced which would not be used for the longest duration of time in the future. Example-2:Consider the page references 7, 0, 1, 2, 0, 3, 0, 4, 2, 3, 0, 3, 2, with 4 page frame. Find number of page fault.

Which page replacement algorithm will select the page whose next occurrence will be after the longest time in future?

The optimal page replacement algorithm
Explanation: The optimal page replacement algorithm will select the page whose next occurrence will be after the longest time in future.

What page replacement algorithm is used by Windows?

Windows 10 implements a LRU-approximation clock algorithm for page replacement. The replacement policy is a combination of global and local. If a process faults when below its maximum working set, or when free memory is plentiful , the OS gives the process a frame from the free list.