What is the advantage of using a disk controller to control the hard disk? How else could you do the job that the disk controller

The UNIX operating system differentiates between block-oriented and character- oriented devices. Give an example of each, explain the differences between them, and explain how the I/O process differs for each.

To use a computer for multimedia (moving video and sound), it is important to maximize the efficiency of the I/O. Assume that the blocks of a movie are stored consecutively on a CD-ROM. Describe the steps used to retrieve the blocks for use by the movie display software. Discuss ways in which you could optimize the performance of the I/O transfer.

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