Typically,the following is not true under most operating systems control:
A) Data is placed in a buffer before being written to a disk
B) A buffer is written to a disk only when it is full
C) Data is directly written to disk when the "write" operation is requested by an application program
D) A buffer may contain many records

Question

Quizplus · Accepted Answer

Most operating systems use buffers to improve disk I/O performance, and data is usually placed in a buffer before being written to a disk. A buffer may contain many records, and it may be written to a disk even when it is not full. However, data is not directly written to disk when the "write" operation is requested by an application program; it is usually written to a buffer first and then to a disk at a later time.

Typically,the Following Is Not True Under Most Operating Systems Control