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.
Little leaf of mango is caused due to the deficiency of:
Match the toxic compound with respect to their plant source
A. BOAA I. ...
ICAR- Central Agroforestry Research Institute is located at
When a disease is more or less constantly prevalent in a locality year after year in a moderate to serve from, it is known as
Black heart of potato is a -
Botanical name of barley is-
Which crop is associated with the fungal disease known as "Karnal bunt," which is caused by the fungus Tilletia indica and results in the discoloration...
Under which climatic conditions do the laeterite soils develop
The rise in water-table in any season may be a ______ phenomenon of a short duration.
Apatite is a group of minerals which mainly contains___