Q82.
a
Section
9-3 Database
Answer
Explanation
A database is a collection of various data (information) organized and stored in a single location according to a certain purpose. Databases are equipped with the function to maintain data
consistency so that even if multiple users manipulate the database simultaneously, no discrepancies arise in the data.
Q83.
c
Section
9-5 Security
Answer
Explanation
A digital signature verifies the identity of the sender, and provides a guarantee that the data
has not been altered along the way.
Q84.
c
Section
9-1 Human interface
Answer
Explanation
Multiple items can be selected using a checkbox.
a): A component for having text and numbers entered.
b): A menu that displays items in a list in an up-to-down direction when selected.
d): A component which allows only a single item to be selected from a list of several.
Q85.
a
Section
8 -2 System component
Answer
Explanation
A cluster system is a configuration in which multiple computers (including servers) are linked
together in a network, and operated as if they were one system. In a cluster system, services
can be provided without interruption even in the event of a failure.
b): Describes a thin client.
c): Describes a duplex system.
d): Describes a firewall.
Q86.
c
Section
9-1 Human interface
Answer
Explanation
Universal design is the design of products, services, and environments that can be used by as
many people as possible without applying special designs or modifications. It is based on the
idea that it is important to make things convenient for all users.
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