Question
Which of the following accurately describes the role of
virtual memory in modern operating systems?Solution
Detailed Explanation:Virtual memory is a memory management technique that gives the illusion of a larger memory space than physically available. It does this by using disk space as an extension of RAM, enabling processes to run even when their memory requirements exceed the physical memory's capacity. This is achieved through paging and swapping mechanisms, which divide memory into fixed-size pages and swap them between RAM and disk storage as needed. Virtual memory is essential for multitasking, as it isolates processes, prevents conflicts, and ensures efficient utilization of memory resources. It also enables features like memory protection, allowing secure execution of multiple programs simultaneously. Why Other Options Are Incorrect:
- Option A: Virtual memory complements physical memory but does not eliminate its need. Physical RAM is still required for efficient execution.
- Option C: Paging is the primary method used, often combined with segmentation for added flexibility. Virtual memory does not replace paging.
- Option D: Virtual memory is not restricted to distributed systems; it is a fundamental feature of most modern operating systems.
- Option E: Memory allocation algorithms are still required to manage physical and virtual memory effectively.
This soil property which impacts nutrient movement to plant roots through mass flow and diffusion?
The test to confirm presence of Sesame oil in Vanaspati in sufficient quantity as per regulations is:
Paddy and straw are an example of
Which of the following act as a regulator of agricultural produce market?
In which year did tractor manufacturing start in India?
According to CRIDA, the depth of deep tillage is ____
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Maximum, minimum and optimum temperatures are collectively termed as
Irrigation is scheduled at IW /CPE ratio of 0.8 and the crop is irrigated to a depth of 5.0cm when the CPE is-