Which one of the following statements is not correct regarding the usage of…
2024
Which one of the following statements is not correct regarding the usage of virtual memory?
- A.
To free user programs from the need to carry out storage allocation and to permit efficient sharing of the available memory space among different users
- B.
To make program independent of the configuration and capacity of the physical memory for their execution
- C.
To achieve higher CPU performance
- D.
To achieve the very low access time and cost per bit that is possible with a memory hierarchy
Attempted by 8 students.
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Correct answer: C
Option 3 : To achieve higher CPU performance
Physical memory cannot store large programs. So virtual memory is used that provides a larger amount of space to the process. Some of the portions is stored in the disk storage.
It allows us to extend the use of physical memory by using hard disk space.
It allows us to have memory protection because each virtual address is translated into physical memory.
When the process requires a particular page, it demands the required page. The page in the storage device is accessed.
But storage device is much slower than RAM’s, so it affects the performance, i.e. the performance is reduced. (Statement in Option 3 is incorrect)