試題詳解

18. Which of the following statements about memory management in operating systems is CORRECT?
(A) Page size is usually set to a power of 2, such as 20 or 40.
(B) The page table is usually stored on the hard disk.
(C) When performing page replacement, the page that is used most frequently is typically selected for removal from the memory.
(D) If a process performs I/O, the memory page associated with it should be chosen for removal from the memory.
(E) A page fault means that the data a process tries to access via a virtual address have not been loaded into physical memory.