The concept of virtual memory in an operating system is based on Segmentation and Paging.

Here's a step-by-step explanation:

1. Segmentation: In this technique, the memory is divided into variable-sized parts. Each part is known as a segment which can be allocated to a process. The operating system maintains a segment map table for every process, which stores the details of each segment such as the starting address and the ending address. This allows the operating system to find where the segments are located in the memory.

2. Paging: This is a memory management technique where the memory is divided into fixed-sized blocks known as pages. When a process needs to be executed, its pages are loaded into any available memory frames. The operating system maintains a page map table for each process which stores the frame number for each page of the process. This allows the operating system to find where the pages of a process are located in the memory.

Together, segmentation and paging form the basis of virtual memory. The operating system uses these techniques to give a process the impression that it has more memory than it actually does. This is done by storing the parts of the process that are not currently in use on the disk and loading them into the memory only when they are needed. This allows the operating system to run more processes simultaneously than would be possible with only the available physical memory.

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The concept of virtual memory in an operating system is based on Segmentation and Paging.

Here's a step-by-step explanation:

1. Segmentation: In this technique, the memory is divided into variable-sized parts. Each part is known as a segment which can be allocated to a process. The operating system maintains a segment map table for every process, which stores the details of each segment such as the starting address and the ending address. This allows the operating system to find where the segments are located in the memory.

2. Paging: This is a memory management technique where the memory is divided into fixed-sized blocks known as pages. When a process needs to be executed, its pages are loaded into any available memory frames. The operating system maintains a page map table for each process which stores the frame number for each page of the process. This allows the operating system to find where the pages of a process are located in the memory.

Together, segmentation and paging form the basis of virtual memory. The operating system uses these techniques to give a process the impression that it has more memory than it actually does. This is done by storing the parts of the process that are not currently in use on the disk and loading them into the memory only when they are needed. This allows the operating system to run more processes simultaneously than would be possible with only the available physical memory.

Knowee AI · Accepted Answer

The concept of virtual memory in an operating system is based on Segmentation and Paging.

Here's a step-by-step explanation:

1. Segmentation: In this technique, the memory is divided into variable-sized parts. Each part is known as a segment which can be allocated to a process. The operating system maintains a segment map table for every process, which stores the details of each segment such as the starting address and the ending address. This allows the operating system to find where the segments are located in the memory.

2. Paging: This is a memory management technique where the memory is divided into fixed-sized blocks known as pages. When a process needs to be executed, its pages are loaded into any available memory frames. The operating system maintains a page map table for each process which stores the frame number for each page of the process. This allows the operating system to find where the pages of a process are located in the memory.

Together, segmentation and paging form the basis of virtual memory. The operating system uses these techniques to give a process the impression that it has more memory than it actually does. This is done by storing the parts of the process that are not currently in use on the disk and loading them into the memory only when they are needed. This allows the operating system to run more processes simultaneously than would be possible with only the available physical memory.

In an operating system, on which of the following techniques is the concept of virtual memory based on?Overlaying and relocationSegmentation and partitioningSegmentation and pagingOverlaying and paging

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