题目内容如下
Which of the following components of an operating system maintains the
directory system?
(A)Device driver (B)File manager (C)Memory manager (D)None of above.
Which of the following is not a role of a typical operating system?
(A)Control the allocation of the machine's resources.
(B)Control access to the machine.
(C)Maintain records regarding files stored in mass storage.
(D)Assist the computer user in the task of processing digital photographs.
因为查到的字义组合后反而看不懂也无法顺利理解题义，恳求翻译与详解，感谢。