Question
In a virtual memory system, a process requests a page
that is not currently in memory, triggering a page fault. Which of the following is the most optimal approach to replace the page?Solution
The Optimal Page Replacement algorithm replaces the page that will not be used for the longest duration in the future. While not practically implementable due to the need for future knowledge, it serves as a theoretical benchmark for evaluating other algorithms. It minimizes the number of page faults. Why Other Options Are Incorrect: • A) LRU: Although practical, LRU does not guarantee the lowest page faults as it only considers past usage. • B) FIFO: FIFO can cause frequent page faults due to the lack of relevance to actual usage patterns. • D) Random: Random selection is arbitrary and inefficient. • E) MFU: Assumes pages used frequently in the past will be required again, which is often incorrect.
Lalit and Shweta are the varieties of:
Tomato variety RKMT is evolved through:
Match List-I with List-II and select the correct answer using the codes given below the lists.
HCN in sorghum is synthesized in which part of plant?
Milch breeds are mainly rared for milk , An example of a milch breed of cattle is:
Which marketing channel is NOT mentioned for selling rice?
What does the principle of evaluation in extension education focus on?
Which element is a primary constituent of orthoclase feldspar?
As consumer sensitivity toward insect-inflicted fruit damage increases, how are economic thresholds for insect control in fruit crops likely to shift?
What will be the approx. plant population of wheat crop sown in 1 acre area if there are 50 plants in quadrate with each side 1m long?
