Problem 36
Are problems or shortanswer questions. Compare and contrast sequential and direct file access.
Problem 37
Are problems or shortanswer questions. File access is independent of any physical medium. a. How could you implement sequential access on a disk? b. How could you implement direct access on a magnetic tape?
Problem 38
Are problems or shortanswer questions. What is a file protection mechanism?
Problem 39
Are problems or shortanswer questions. How does UNIX implement file protection?
Problem 41
Are problems or shortanswer questions. What is the minimum amount of information a directory must contain about each file?
Problem 42
Are problems or shortanswer questions. How do most operating systems represent a directory?
Problem 43
Are problems or shortanswer questions. Answer the following questions about directories. a. A directory that contains another directory is called what? b. A directory contained within another directory is called what? c. A directory that is not contained in any other directory is called what? d. The structure showing the nested directory organization is called what? e. Relate the structure in (d) to the binary tree data structure examined in Chapter 8 .
Problem 44
Are problems or shortanswer questions. What is the directory called in which you are working at any one moment?
Problem 46
Are problems or shortanswer questions. Distinguish between an absolute path and a relative path.
Problem 52
Are problems or shortanswer questions. Why is disk scheduling concerned more with cylinders than with tracks and sectors?
