Deck 11: File Systems and Directories

Question 1

Which of the following is the last part of the file name that gives an indication of what kind of data the file contains?

A) File name
B) File type
C) File system
D) File extension
E) Directory

Answer 1

D

Question 2

Which of the following is conceptually divided into logical records?

A) Binary file
B) Direct access file
C) Sequential access file
D) Text file
E) Directory

Answer 2

B

Question 3

Which of the following shows the hierarchical organization of the file system?

A) Working directory
B) Directory tree
C) Root directory
D) Relative path
E) Absolute path

Answer 3

B

Question 4

Which of the following processes disk requests in the order in which they arrive?

A) First-come, first-served
B) SCAN
C) Shortest-seek-time-first
D) Latency
E) Seek time

Question 5

Which of the following specifies a file or directory beginning with the current working directory?

A) Working directory
B) Directory tree
C) Root directory
D) Relative path
E) Absolute path

Question 6

The ˙gif, ˙tiff, and ˙jpg file extensions are generally used for which of the following?

A) Text data file
B) Audio file
C) Image file
D) Word processing document
E) Program source file

Question 7

A file system is the logical view of secondary memory that the operating system provides for the user.

Question 8

A file's extension dictates what type of data it contains.

Question 9

The SCAN disk-scheduling algorithm is similar to the algorithm used to manage elevators.

Question 10

As one moves around in the file system of an operating system, the current working directory remains the same.

Question 11

A(n) _______________ visualizes directories and subdirectories as a hierarchy.

Question 12

A file with _______________ access treats the file as a linear structure.

Question 13

Files with _______________ access have fast retrieval speeds, but are more complicated to implement.

Question 14

A file's _______________ is a text designation of the location of the file within the file system.

Question 15

The _______________ disk-scheduling algorithm moves the read/write heads the minimum amount necessary to satisfy any pending request.

Question 16

_______________ is the act of deciding which outstanding requests for disk I/O to satisfy first.

Question 17

What is a directory?

Question 18

What is a subdirectory?

Question 19

What is a disk cylinder?

Question 20

Describe first-come, first-served (FCFS) disk scheduling.

Question 21

Which of the following is the logical view provided by the operating system to help users manage secondary memory?

A) File name
B) File type
C) File system
D) File extension
E) Directory

Question 22

The .txt file extension is generally used for which of the following?

A) Text data file
B) Audio file
C) Image file
D) Word processing document
E) Program source file

Question 23

Which of the following is the topmost directory, in which all others are contained?

A) Working directory
B) Directory tree
C) Root directory
D) Relative path
E) Absolute path

Question 24

Which of the following uses an elevator-like algorithm to service disk requests as it moves the heads from one extreme to the other?

A) First-come, first-served
B) SCAN
C) Shortest-seek-time-first
D) Latency
E) Seek time

Question 25

Which of the following describes the amount of time it takes to move the read/write heads to the appropriate cylinder?

A) First-come, first-served
B) SCAN
C) Shortest-seek-time-first
D) Latency
E) Seek time

Question 26

Which of the following begins at the root and specifies each step down the tree until it reaches the desired file or directory?

A) Working directory
B) Subdirectory
C) Parent directory
D) Relative path
E) Absolute path

Question 27

Which of the following is a disk-scheduling algorithm that moves disks heads by the minimum amount necessary to satisfy any pending request?

A) First-come, first-served
B) SCAN
C) Shortest-seek-time-first
D) Latency
E) Seek time

Question 28

A file is a named collection of directories.

Question 29

A text file contains bytes of data that represent characters from a particular character set such as ASCII or Unicode.

Question 30

A relative path begins at the root of the directory tree.

Question 31

The working directory is the directory into which all temporary files are stored.

Question 32

First-come, first-served disk scheduling is relatively easy to implement, but is not the most efficient approach.

Question 33

At any point in time, a user is "in" the current working directory within the file system.

Question 34

Regarding magnetic disk drives, latency is the additional time it takes the platter to rotate into the proper position so that the data can be read or written.

Question 35

Which of the following is a named group of files?

A) File name
B) File type
C) File system
D) File extension
E) Directory

Question 36

Which of the following contains bits organized into groups of 8 or 16 that represent characters from a character set?

A) Binary file
B) Direct access file
C) Sequential access file
D) Text file
E) Directory

Question 37

Which of the following specifies a file or directory beginning with the root directory?

A) Working directory
B) Directory tree
C) Relative path
D) Absolute path

Question 38

In which disk-scheduling algorithm could starvation occur?

A) First-come, first-served
B) SCAN
C) Shortest-seek-time-first
D) Latency
E) Seek time

Question 39

From the user's perspective, a file is the smallest amount of data that can be written to secondary memory.

Question 40

An absolute path begins at the current working directory.

Question 41

A disk-scheduling algorithm determines how the outstanding requests for disk access will be satisfied.

Question 42

A user's ability to perform certain operations on a file depend on the permissions that user has been granted.

Question 43

Most operating systems allow the user to specify a set of paths that are searched in a specific order to help resolve references to executable programs.

Question 44

A(n) _______________ is a named collection of related data.

Question 45

Files are often grouped into _______________ to help organize and manage them.

Question 46

A(n) _______________ path name begins from the current working directory.

Question 47

The _______________ disk-scheduling algorithm moves the disk heads from one extreme to the other, processing any outstanding requests as it reaches the appropriate cylinder.

Question 48

In a UNIX operating system, a file's protection settings are divided into three categories: Owner, Group, and _______________.

Question 49

A word processing file is not a simple _______________ because in addition to characters it often contains data related to formatting, color, and graphics.