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PS4.C - Informational Technologies - Level 3
Test Description: PS4.C - Informational Technologies - Level 3
Instructions: Answer all questions to get your test result.
1) All of the frequencies or wavelengths of electromagnetic radiation
A
radio waves
B
x-rays
C
digitized
D
electromagnetic spectrum
2) continuous wave that vary in strength and quality
A
analog signals
B
all of the answer choices
C
binary signals
D
digital signals
3) discrete pulses that are either on or off, representing a series of bits of 1s and 0s
A
binary signals
B
digital signals
C
all of the answer choices
D
analog signals
4) Converting a continuous value to numeric values.
A
quantitative
B
analog
C
digitized
D
data
5) the processing of information so that it can be stored
A
data
B
transmit
C
encode
D
decode
6) A communications medium consisting of thousands of very thin filaments of glass fibers that transmit information via light pulses generated by lasers.
A
fiber optic cables
B
electromagnetic spectrum
C
voltage
D
sonar
7) the part of the electromagnetic spectrum that consists of waves with the lowest frequencies
A
x-rays
B
microwaves
C
radio waves
D
visible light
8) A way of representing information using only two options 0s and 1s.
A
binary
B
analog
C
pressure wave
D
sonar
9) Electromagnetic radiation having a very short wavelength; can penetrate substances such as skin and muscle.
A
microwaves
B
x-rays
C
ultraviolet waves
D
radio waves
10) Technology that detects submerged objects by means of sound waves
A
sonar
B
x-rays
C
ultrasound
D
fiber optic cables
11) the rate at which something occurs or is repeated over a particular period of time or in a given sample such as a wave
A
wavelength
B
amplitude
C
voltage
D
frequencies
12) the passage of light through an object
A
ultrasound
B
transmission
C
voltage
D
waves
*select an answer for all questions
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