What is virtual memory and how does it work?

What is virtual memory and how does it work?

Virtual memory is a memory management technique that allows the execution of processes that may not be completely in memory. It uses both hardware and software to enable a computer to compensate for physical memory shortages by temporarily transferring data from random access memory (RAM) to disk storage.

Why is virtual memory important for modern operating systems?

Virtual memory is crucial because it allows systems to run larger applications than the physical memory would normally allow. It also provides isolation between processes, enhancing security and stability.

Can you explain the difference between virtual memory and physical memory?

Physical memory refers to the actual RAM installed in the computer, while virtual memory is an abstraction that allows the system to use disk space to extend the apparent amount of memory available.

What are the advantages and disadvantages of using virtual memory?

Advantages include efficient memory use and the ability to run larger applications. Disadvantages can be slower performance due to disk access and potential fragmentation.