Q69.
a
Section
9-5 Security
Answer
Explanation
The first step to take when there is a computer virus infection is to sever the infected personal
computer from the network. Severing it minimizes the impact on other personal computers.
Q70.
c
Section
8-1 Computer component
Answer
Explanation
The number of disk sectors is 512 × 228 bytes. Since 512 × 221 equals one (1) gigabyte, the
maximum number of gigabytes that can be managed on the disk is 27 disk sectors.
(512 × 228) ÷ (512 × 221) = 228 ÷ 221
=2(28−21)
=27
7
Therefore, 2 = 128 gigabytes.
Q71.
d
Section
8-4 Hardware
Answer
Explanation
A touch panel is an input device that is a pointing device. A touch panel is a device that inputs
data by pressing fingers against icons or buttons shown on the display.
Q72.
a
Section
8-2 System component
Answer
Explanation
TCO (Total Cost of Ownership) represents all necessary costs from the time of purchase to
the time of disposal of a system. TCO encompasses all costs including the purchase cost for
computer hardware and software, training costs for users, operational costs, system maintenance costs, and cost of losses due to system failures. When installing a system, it is important to consider the continuous return on investment based on the TCO.
Q73.
a
Section
9-4 Network
Answer
Explanation
MIME is a protocol for extending data formats that can be sent and received by e-mail. It enables the attachment of files such as images, and audio files, where before only single-byte
character code text formats could be handled.
b): SMTP is a protocol for sending e-mail.
c): The portion of the e-mail address before the “@” sign can be set as desired, as long as it is
not duplicated with the same provider.
d): DHCP is a function for automatically assigning unused IP addresses to connected clients
on a TCP/IP-based network.
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