Deck 12: File Management

Question 1

Typically, the only way that a user or application may access files is through the file management system.

Answer 1

True

Question 2

A _________ is a collection of related fields that can be treated as a unit by some application program.

A) file
B) field
C) record
D) database

Answer 2

C

Question 3

A __________ is responsible for starting I/O operations on a device and processing the completion of an I/O request.

A) basic I/O supervisor
B) basic file system
C) device driver
D) logical I/O

Answer 3

C

Question 4

The sequential file organization is the only one that is easily stored on tape as well as disk.

Question 5

File systems do not maintain the attributes associated with the files.

Question 6

Records may only be of fixed length.

Question 7

All types of UNIX files are administered by the OS by means of inodes.

Question 8

A file directory contains information about the files, including attributes, location, and ownership.

Question 9

A _________ is the basic element of data.

A) database
B) field
C) file
D) record

Question 10

The superuser is exempt from the usual file access control constraints and has system wide access.

Question 11

A preallocation policy requires that the maximum size of a file be declared at the time of the file creation request.

Question 12

Device drivers are not part of the operating system.

Question 13

The least-complicated form of file organization is the indexed file.

Question 14

A partial index contains one entry for every record in the main file.

Question 15

An objective of the __________ is to provide a standardized set of I/O interface routines to user processes.

A) working directory
B) file management system
C) indexed file allocation
D) file directory

Question 16

The cluster is the fundamental unit of allocation in NTFS.

Question 17

A __________ is a collection of similar records.

A) file
B) database
C) record
D) field

Question 18

Indexed allocation supports both sequential and direct access to the file and thus is the most popular form of file allocation.

Question 19

A field is characterized by its length and data type.

Question 20

A file allocation table (FAT) is used to keep track of the portions assigned to a file.

Question 21

The _________ file exploits the capability found on disks to access directly any block of a known address.

A) direct
B) sequential
C) indexed sequential
D) indexed

Question 22

__________ represents an open file associated with a process.

A) Dentry object
B) Inode object
C) File object
D) Superblock object

Question 23

An _________ is a control structure that contains the key information needed by the operating system for a particular file.

Question 24

__________ provides a general purpose record I/O capability and maintains basic data about files.

Question 25

The essential aspects of a __________ are that the relationships that exist among elements of data are explicit and designed for use by a number of different applications.

Question 26

Because there is no structure to the _________ form of file organization, record access is by exhaustive search.

Question 27

The __________ level is the primary interface with the environment outside of the computer system.

A) logical I/O
B) basic I/O supervisor
C) physical I/O
D) access method

Question 28

A(n) __________ is a general model of access control as exercised by a file or database management system.

A) VFS
B) compatibility ticket
C) inode
D) access matrix

Question 29

The __________ is responsible for all file I/O initiation and termination.

Question 30

The physical organization of the file on secondary storage depends on the blocking strategy and the __________ strategy.

Question 31

The _________ is concerned with scheduling disk and tape accesses to optimize performance.

A) device driver
B) basic I/O supervisor
C) access method
D) logical I/O

Question 32

In the __________ form of file structure all records are of the same length, consisting of the same number of fixed-length fields in a particular order.

Question 33

A _________ is a collection of related data.

A) record
B) file
C) database
D) field

Question 34

A UNIX file system resides on a single logical disk or disk partition and is laid out with the following elements: superblock, inode table, data blocks, and __________ .

Question 35

The __________ level provides a standard interface between applications and the file systems and devices that hold the data.

Question 36

A _________ is a contiguous set of allocated blocks.

A) key
B) pathname
C) pile
D) portion

Question 37

An objective of the __________ is to meet the data management needs and requirements of the user, which include storage of data and the ability to perform related operations.

Question 38

The term _________ refers to the logical structuring of the records as determined by the way in which they are accessed.

A) file organization
B) access method
C) working directory
D) database

Question 39

The most common form of file structure is __________ .

A) the indexed file
B) the sequential file
C) the pile
D) the indexed sequential file

Question 40

_________ are used mostly in applications where timeliness of information is critical and where data are rarely processed exhaustively.

A) Indexed files
B) Indexed sequential files
C) Sequential files
D) Hashed files

Question 41

The ________ is a balanced tree structure with all branches of equal length, and has become the standard method of organizing indexes for databases.

Question 42

Linux makes use of a __________ , which presents a single, uniform file system interface to user processes.

Question 43

Three methods of file allocation commonly used are: chained, indexed and _________ .

Question 44

__________ are often used where very rapid access is required, where fixed-length records are used, and where records are always accessed one at a time.

Question 45

A _________ is a collection of addressable sectors in secondary memory that an OS or application can use for data storage.