Chapter 11

Symbol used to represent the parent directory in a relative path name.

..

Symbol used to separate the names in a path in a Unix environment

/

Distinguish between a file and a directory

A file is a named collection of data. A directory is a named collection of files.

audio file

B. mp3, au, and wav

Symbol used to separate the names in a path in a Windows environment

\

word processing file

doc and wp3

A relative path is relative to the root of the directory hierarchy

false

An absolute path and a relative path will always be the same length.

false

Sequential access and direct access take about the same amount of time to retrieve data.

false

The current file pointer indicates the end of a file.

false

image file

gif, tiff, jpg

program source file

java, c, and cpp

A program written in a high-level language is stored in a text file that is also called a source file.

true

A text file stores binary data that is organized into groups of 8 or 16 bits that are interpreted as characters

true

An operating system is responsible for managing the access to a disk drive.

true

In most operating systems, a directory is represented as a file

true

Some operating systems maintain a separate read pointer and write pointer for a file

true

The seek time is the amount of time it takes for the heads of a disk to reach a particular cylinder

true

The shortest-seek-time-first disk scheduling algorithm moves the heads the minimum amount it can to satisfy a pending request.

true

The type of a file determines which kinds of operations can be performed on it

true

Two files in a directory system can have the same name if they are in different directories

true

UNIX file permissions allow a group of users to access a file in various ways

true

text data file

txt