CHAPTER 8

QUESTION 1

Many systems force users to have their files organized for fixed-length records if the records are to be accessed directly.

True

False

4 points

QUESTION 2

In indexed storage, when a file is created, the pointers in the index block are all set to ____.

	a.	zero
	b.	the beginning of the volume
	c.	null
	d.	the end of the volume

4 points

QUESTION 3

In noncontiguous storage, one way to link file extents is at the storage level where each extent points to the ____.

	a.	current subdirectory
	b.	master directory entry
	c.	next extent in the sequence
	d.	next file in the sequence

4 points

QUESTION 4

In a file directory tree structure, the leaves of the tree are subdirectories created by the user.

True

False

4 points

QUESTION 5

Although a user directory is treated as a file, it is flagged to indicate to the File Manager that this file is really a ____ whose records are filenames that point to files.

	a.	database
	b.	subdirectory
	c.	master file directory
	d.	volume

4 points

QUESTION 6

____ text compression builds on the previous data element. The first data element in a list is not compressed but each entry after that takes a given number of characters from the previous entry that they have in common and then adds the characters that make it unique.

	a.	Repeated-characters
	b.	Front-end
	c.	Repeated-terms
	d.	Lossy

4 points

QUESTION 7

A files ____ filename includes all path information for that file.

	a.	extended
	b.	long-form
	c.	relative
	d.	absolute

4 points

QUESTION 8

Files cannot be converted from sequential to direct or vice versa.

True

False

4 points

QUESTION 9

Each volume in a system has a volume descriptor followed by a ____ that lists the names and characteristics of every file contained in that volume.

	a.	file location
	b.	subdirectory
	c.	volume directory
	d.	master file directory

4 points

QUESTION 10

The formula for computing the current byte address (CBA) for a direct access file with fixed record length is ____.

	a.	CBA = RN * RL
	b.	CBA = (RN 1) * RL
	c.	CBA = (RN + 1) * RL
	d.	CBA = RN / RL

4 points

QUESTION 11

A(n) ____ filename is the name that differentiates a file from other files in the same directory.

	a.	absolute
	b.	relative
	c.	directory
	d.	short-form

4 points

QUESTION 12

To support text compression, data in a fixed-length field that includes a short name followed by many blank characters can be replaced with a variable-length field and a special code to indicate how many blanks were truncated.

True

False

4 points

QUESTION 13

When using indexed sequential record organization, each entry in the index file contains the ____ and the physical location of the data block where this record, and the records with smaller keys, are stored.

	a.	lowest record key
	b.	last record name
	c.	first record name
	d.	highest record key

4 points

QUESTION 14

In a direct record organization scheme, the program used to store the data follows a set of instructions, called a ____ algorithm, that transforms each key into a number, the records logical address.

	a.	lookup
	b.	translation
	c.	hashing
	d.	grouping

4 points

QUESTION 15

The File Manager responds to the CREATE command by creating a new file.

True

False

4 points

QUESTION 16

On magnetic disks, files can be organized in one of three ways: ____.

	a.	sequential, indirect, or direct
	b.	indexed direct, indexed indirect, or random
	c.	sequential, direct, or indexed sequential
	d.	sequential, random, or indirect

4 points

QUESTION 17

An indexed sequential file does not have overflow areas.

True

False

4 points

QUESTION 18

A subdirectory is created when a user opens an account to access the computer system.

True

False

4 points

QUESTION 19

____ are special files with listings of filenames and their attributes.

	a.	Databases
	b.	Directories
	c.	Programs
	d.	Data files

4 points

QUESTION 20

A file extension is usually two to four characters in length and is separated from the relative name by a period.

True

False

4 points

QUESTION 21

A volume must contain a single file.

True

False

4 points

QUESTION 22

When data is stored in fixed length fields, data that extends beyond the fixed size ____.

	a.	generates an operating system error
	b.	is broken up and stored in more than one field
	c.	is truncated
	d.	combines multiple fields to accommodate the data

4 points

QUESTION 23

As long as users refer to files in the ____ directory, they can access the files without entering the absolute filename.

	a.	root
	b.	main
	c.	home
	d.	working

4 points

QUESTION 24

A compressed image file can be reconstructed if a lossy compression algorithm is used because the compression process is reversible.

True

False

4 points

QUESTION 25

A UNIX or Linux system might identify a file as: /usr/imfst/flynn/inventory.doc. The first entry is a forward slash ( / ) representing the master directory, called the ____ directory.

	a.	working
	b.	branch
	c.	main
	d.	root