Deck 8: File Management

Question 1

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

Answer 1

False

Question 2

A record is a group of related bytes that can be identified by the user with a name, type, and size.

Answer 2

False

Question 3

Sequential record organization is by far the easiest to implement because records are stored and retrieved serially, one after the other.

Answer 3

True

Question 4

When someone creates a folder, the system creates a subdirectory in the current directory or folder.

Question 5

It is easy to calculate the location of a variable-length record.

Question 6

In newer operating systems, a subdirectory is created when a user opens an account to access the computer system.

Question 7

An indexed sequential file does not have overflow areas.

Question 8

The computer system defines a file by activating the appropriate secondary storage device and loading the file into memory while updating its records of who is using what file.

Question 9

When a user gives a command to modify the contents of a file, it's actually a command to access folders within the file.

Question 10

The relative filename is the name that is selected by the File Manager when the file is created.

Question 11

Each volume can only contain a single file.

Question 12

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

Question 13

Tree structures are inefficient for searching because there are fewer entries in each directory.

Question 14

A file descriptor usually contains only a file name and the directory name in which the file is located.

Question 15

An extension is usually two or three characters long and is separated from the relative name by a period.

Question 16

The File Manager is in charge of the system's physical components, its information resources, and the policies used to store and distribute the files.

Question 17

Without the File Manager, every program would need to include instructions to operate all of the different types of devices, and all of the different models within each type.

Question 18

Examples of batch commands are CREATE, DELETE, RENAME, and COPY.

Question 19

Although noncontiguous allocation schemes eliminate external storage fragmentation and the need for compaction, they don't support direct access because there's no easy way to determine the exact location of a specific record.

Question 20

The File Manager keeps track of the empty storage areas by treating them as files.

Question 21

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

A) directory
B) volume
C) subdirectory
D) MFD

Question 22

For every file request, the ____ is the point of entry.

A) file location
B) volume location
C) subdirectory
D) MFD

Question 23

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

A) indexed direct, indexed indirect, or random
B) sequential, indirect, or direct
C) sequential, random, or indirect
D) sequential, direct, or indexed sequential

Question 24

A ____ is a group of related records that contains information to be used by specific application programs to generate reports.

A) field
B) record group
C) file
D) directory

Question 25

Access methods are dictated by a file's organization; the most flexibility is allowed with indexed sequential files and the least with sequential.

Question 26

____ is a specialized WRITE command for existing data files that allows for appending records or for rewriting selected records in their original place in the file.

A) APPEND
B) UPDATE
C) REWRITE
D) MODIFY

Question 27

Data in a fixed-length field might include a short name followed by many blank characters; it can be replaced with a variable-length field and a special code to indicate how many blanks were truncated.

Question 28

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

A) generates an operating system error
B) is truncated
C) is broken up and stored in more than one field
D) combines multiple fields to accommodate the data

Question 29

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

A) Databases
B) Directories
C) Programs
D) Data files

Question 30

The purpose of an extension is to ____.

A) identify the directory in which the file is stored
B) identify the type of file
C) identify the file size
D) identify the file owner

Question 31

The File Manager writes the volume name and other descriptive information on an easy-to-access place on each unit: ____ of the CD or DVD.

A) the outermost part
B) the innermost part
C) immediately following the master file directory
D) stored at the beginning of the volume

Question 32

In a networked environment using the OpenVMS Alpha operating system, a file might be named VAX2::USR3:[IMFST.FLYNN]INVENTORY_COST.DOC;7. ____ is the volume where the file is stored?

A) VAX2
B) USR3
C) IMFST
D) FLYNN

Question 33

Many computer users and some operating systems call subdirectories ____.

A) folders
B) files
C) volumes
D) databases

Question 34

As long as users refer to files in the ____ directory, they can access their files without entering the complete name from the highest level to the lowest.

A) root
B) working
C) home
D) default

Question 35

When using random access files, the program used to store the data follows a set of instructions, called a ____ algorithm, that transforms each key into a number, the record's logical address.

A) hashing
B) grouping
C) translation
D) lookup

Question 36

To achieve its goals, the File Manager must be able to accommodate a variety of file organizations, physical storage allocation schemes, record types, and access methods.

Question 37

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

Question 38

A UNIX or Linux system might identify a file as: /usr/imfst/flynn/inventory.doc. What represents the root directory is ____.

A) /
B) usr
C) imfst
D) flynn

Question 39

The File Manager is in charge of the system's ____ components.

A) data
B) software
C) electronic
D) physical

Question 40

In a file management system, information is passed from the Device Manager at the top of the hierarchy to the File Manager at the bottom.

Question 41

In noncontiguous storage, linking can take place at the ____ level where each part of the file points to the next one in the sequence.

A) subdirectory
B) file
C) directory
D) storage

Question 42

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

A) the end of the volume
B) the beginning of the volume
C) null
D) zero

Question 43

____ formula computes the byte address for a direct access file with fixed record length.

A) CBA = (RN - 1) * RL
B) CBA = RN * RL
C) CBA = RN / RL
D) CBA = (RN + 1) * RL

Question 44

The primary disadvantage of contiguous storage is that ____.

A) it is hard to implement and manage
B) it is difficult to find information in files
C) file can't be expanded unless there is empty space available immediately following it
D) it is an inefficient use of space

Question 45

The most commonly used access control scheme is the ____.

A) access control matrix
B) access control list
C) capability list
D) capability matrix

Question 46

____ compression is a technique used to save space in files.

A) Text
B) Space
C) Data
D) Character

Question 47

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) last record name
B) highest record key
C) lowest record key
D) first record name

Question 48

____ might be an encoded version of ADAMSbbbbbbbbbb?

A) ADAMSx10
B) ASbb
C) AD2MSb10
D) ADAMSb10

Question 49

____ allocation allows files to use any storage space available on the disk.

A) Contiguous storage
B) Noncontiguous storage
C) Fragmented storage
D) Add-on storage

Question 50

The File Manager uses the address of the ____ to access the next sequential record.

A) first byte read
B) last byte read
C) first byte in the file
D) index record