Q56.
b
Section
6-1 Service management
Answer
Explanation
Security wires are wires that are installed in order to fasten portable notebook computers and
other small devices in place. They can be used to prevent theft by attaching them to a stationary object such as a desk or rack.
Q57.
d
Section
9-5 Security
Answer
Explanation
A macro virus is a virus that infects a computer when a file created using word processing or
spreadsheet software is opened.
a): A virus that infects the location where the programs that are executed on system startup
are stored.
)
b : A virus that infects other programs when the infected program is executed.
c): A virus that makes the infection difficult to detect by hiding itself.
Q58.
b
Section
9-3 Database
Answer
Explanation
An online transaction processing system is a system in which a server carries out processing
based on a request from a client connected to the network, and returns the processing results
to the client. If processing such as a database update, addition, or deletion is interrupted, the
data will be inconsistent. Therefore, reliability is required.
Q59.
c
Section
7-1 Basic theory
Answer
Explanation
The number of combinations for choosing four (4) numbers from 1 to 20 is,
20C4 = (20 × 19 × 18 × 17) ÷ (4 × 3 × 2 × 1)
= 4845
Q60.
c
Section
8-2 System component
Answer
Explanation
A three-tier client/server system is a system which is distributed across the three (3) tiers of
client, application server, and database server. The client possesses user interfaces, and the
database server possesses data processing functions. The application server is placed betwe en
them to receive requests from the client, and execute business logic that returns results.
Therefore, even if the data processing logic is changed, there is little impact on the client.
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