Q85.
b
Section
7-2 Algorithms and programming
Answer
HTML is a language protocol that uses control symbols called tags for markup of hypertext.
Q86.
a
Section
8-4 Hardware
Answer
Resolution refers to the number of horizontal and vertical dots that can be displayed on a
screen, and expresses the screen display resolution. The greater the resolution, the larger the
amount of information that can be displayed, and the smaller the text and images.
Q87.
a
Section
7-1 Basic theory
Answer
An analog signal is expressed as continuous data, in contrast with a digital signal that is expressed as separate interrupted data. During A/D conversion, increasing the sampling frequency increases the quantization value, which gets closer to the waveform of an analog signal and improves sound quality production. However, it is not possible to completely reproduce the waveform of an analog signal, as it is an A/D conversion that takes place.
Q88.
c
Section
8-2 System component
Answer
A blade server is a thin server that enables multiple servers to be mounted on a rack, so that
large amounts of data can be processed while taking up less space and packing more servers
in the same space.
a): Describes a supercomputer.
b): Describes a database server.
d): Describes a DNS server.
Q89.
b
Section
9-3 Database
Answer
In order to calculate the monthly sales performance by product, the sales_date, product_name,
and sales_amount are required at the very least.
a): The monthly calculation cannot be performed with only the product_name and
sales_amount.
c): The category is unnecessary for the sales performance by product.
d): The unit_price is unnecessary, since it is determined by the product.
Q90.
c
Section
9-3 Database
Answer
The most efficient method is to extract and sort the target data, and calculate the total sales.
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