what is virtual memory? what are some advantages to using virtual memory over just using ram alone?

Brief Explanations:

Virtual memory is a memory - management technique that uses a combination of RAM and disk space to create the illusion of a larger amount of memory available to a computer's processes. Advantages over using RAM alone include allowing programs to run even when there is not enough physical RAM available by swapping out infrequently - used data to disk, enabling multiple large programs to run simultaneously by efficiently managing memory usage, and providing protection between different processes' memory spaces.

Answer:

Virtual memory is a memory - management technique using RAM and disk space to simulate more memory. Advantages: can run programs with limited physical RAM, support multiple large - scale programs running simultaneously, and offer memory space protection for different processes.