单选题：Which of the following is the main characteristic of the demand

Which of the following is the main characteristic of the demand paging technique?@[B](1)
A. It does not require the process to be loaded into the physical memory.
B. It does not require the entire process to be loaded into the memory simultaneously.
C. It does not require page-fault handling.
D. It does not require page replacement.





A.It does not require the process to be loaded into the physical memory.
B.It does not require the entire process to be loaded into the memory simultaneously.
C.It does not require page-fault handling.
D.It does not require page replacement.


答案：B