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