[amp_mcq option1=”is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.” option2=”consists of those addresses that may be generated by a processor during execution of a computation.” option3=”is a method of allocating processor time.” option4=”allows multiple programs to reside in separate areas of core at the time. E. None of the above” correct=”option1″]
The correct answer is: A. is a method of memory allocation by which the program is subdivided into equal portions, or pages and core is subdivided into equal portions or blocks.
Virtual memory is a technique that allows a computer to run programs that require more memory than is physically available on the computer. It does this by dividing the program’s memory into small pieces, called pages, and storing only the pages that are currently being used in physical memory. The other pages are stored on disk, and are only brought into physical memory when they are needed.
This allows programs to run even if they are larger than the amount of physical memory available. It also allows multiple programs to run at the same time, even if they each require more memory than is physically available.
Option B is incorrect because it describes the address space, not virtual memory. The address space is the set of all possible addresses that a program can use. Virtual memory is a technique that allows a program to use addresses that are not actually available in physical memory.
Option C is incorrect because it describes time sharing, not virtual memory. Time sharing is a technique that allows multiple programs to share the same processor. Virtual memory is a technique that allows a program to use more memory than is physically available.
Option D is incorrect because it describes address translation, not virtual memory. Address translation is the process of converting virtual addresses to physical addresses. Virtual memory is a technique that allows a program to use addresses that are not actually available in physical memory.
Option E is incorrect because it is not a valid option.