Computer Fundamentals

Question: Match the term "dedicated line" with their definitions.
A
online area in which users have written discussions about a subject

B
electrical disturbance that can degrade communications

C
work online with other users connected to a server

D
type of always-on connection that is established between two communications devices

E
communications device that can convert digital signals to analog signals and analog signals to digital signals, so that data can travel along an analog telephone line

F
a protocol that defines how two devices use short-range radio waves to transmit data

Note: Not available
1. Report
Question: Match the term "dial-up modem" with their definitions.
A
online area in which users have written discussions about a subject

B
electrical disturbance that can degrade communications

C
work online with other users connected to a server

D
type of always-on connection that is established between two communications devices

E
communications device that can convert digital signals to analog signals and analog signals to digital signals, so that data can travel along an analog telephone line

F
a protocol that defines how two devices use short-range radio waves to transmit data

Note: Not available
1. Report
Question: Match the term "noise" with their definitions.
A
online area in which users have written discussions about a subject

B
electrical disturbance that can degrade communications

C
work online with other users connected to a server

D
type of always-on connection that is established between two communications devices

E
communications device that can convert digital signals to analog signals and analog signals to digital signals, so that data can travel along an analog telephone line

F
a protocol that defines how two devices use short-range radio waves to transmit data

Note: Not available
1. Report
Question: A _____ is a field that uniquely identifies each record in a file.
A
data type

B
data file

C
primary key

D
data character

Note: Not available
1. Report
Question: In some tables, the primary key consists of multiple fields, called a _____.
A
composite key

B
secondary key

C
key field

D
column

Note: Not available
1. Report
Question: _____ procedures include adding records to, modifying records in, and deleting records from a file.
A
Range check

B
File maintenance

C
Backup

D
Validation

Note: Not available
1. Report
Question: A _____ verifies that a required field contains data.
A
completeness check

B
range check

C
consistency check

D
numeric check

Note: Not available
1. Report
Question: When an organization uses _____, many programs and users share the data in the database.
A
a data model

B
a file processing system

C
the database approach

D
a check digit

Note: Not available
1. Report
Question: All of the following are strengths of the database approach, except _____.
A
less complexity

B
improved data integrity

C
reduced development time

D
easier access

Note: Not available
1. Report
Question: Many organizations adopt the _____ policy, where users’ access privileges are limited to the lowest level necessary to perform required tasks.
A
golden rule

B
principle of least privilege

C
principle of highest access

D
least order

Note: Not available
1. Report

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Question: Match the term "dedicated line" with their definitions.

Question: Match the term "dial-up modem" with their definitions.

Question: Match the term "noise" with their definitions.

Question: A _____ is a field that uniquely identifies each record in a file.

Question: In some tables, the primary key consists of multiple fields, called a _____.

Question: _____ procedures include adding records to, modifying records in, and deleting records from a file.

Question: A _____ verifies that a required field contains data.

Question: When an organization uses _____, many programs and users share the data in the database.

Question: All of the following are strengths of the database approach, except _____.

Question: Many organizations adopt the _____ policy, where users’ access privileges are limited to the lowest level necessary to perform required tasks.