You are given a passage. You need to construct a question about the information present in the passage. Construct a question in such a way that (i) it is unambiguous, (ii) its answer is the whole paragraph. Avoid creating questions that can be answered correctly without actually understanding the paragraph.
Q: Since the main memory (RAM) is expensive, it usually has lesser capacity than the hard drive.  However, the problem with that is the RAM gets filled quickly with all your running programs.  However, the CPU (processor) multi-tasks, hence it doesnt need the programs (data and instruction words in the RAM) all the time.  Thats where the virtual memory comes into picture.  Virtual memory is basically part of the drive which is used as a temporary "parking space" for data and instruction words which can't be held in the RAM.  When programs are no longer requred they are "swapped" to the hard drive from the RAM and shuttled back to the RAM when the CPU gets ready to process them (depending upon the scheduling algorithm).\n\nYou are getting the error because you have assigned less virtual memory (or the system has assigned less vitual memory).  Hence, when the RAM gets full, its doesn't get any "parking space" on the hard drive and you get the error.\n\nIn order to bump up the virtual memory and improve system performance, view the following page.  It is really helpful!
A: 
what is vitrual memory?after about 20 mins, pc pops up with this message vitrual memory low, what can i do?