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(Technology) Digital vs. Analog Signals
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In which type of technology does the recording of a wave get used in its original form?
 
analog
 
digital
 
radio
 
gamma
Which technology turns recorded waves into numbers that can be stored in a device?
 
digital
 
analog
 
radio
 
gamma
Which type of signal maintains the quality of that signal or recording?
 
digital
 
digitl
 
digtal
 
dgital
Analog signals are able to carry more information than digital signals.
 
False
 
True
Which of the following is NOT true about digital signals?
 
They are replicas of sound waves.
 
They use binary values for data.
 
They are easier and more reliable to transmit.
 
They have a faster rate of transmission.
Does this image represent an analog signal or a digital signal?
 
analog
 
analg
 
anlog
 
anaolg
Why are analog signals prone to distortion & decreased transmission quality?
 
Noise can interrupt the signals.
 
The frequency of waves changes quickly.
 
The amplitude of a wave is too high.
 
Each phase cannot store enough information.
Digital signals have a finite range of values.
 
True
 
False
What does the finite range of a digital signal lie between?
 
0 to 1
 
0 to 100
 
10 to 100
 
a to b
Which of the following is NOT a benefit of using digital signals?
 
recordings maintain their original form
 
more reliable recordings
 
they can be stored for future recovery
 
they can be transmitted over long distances
Which type of transmission cable uses light instead of electricity to quickly transmit signals?
 
fiber-optics
 
metallic wire
 
modems
 
copper wire
The use of fiber-optics to transmit digital signals has created advances in all of these EXCEPT
 
clothing manufacturing
 
medicine & surgery
 
computer networking
 
military & space applications
Digital technology has created huge advancements in science.
 
True
 
False
Which of the following technologies does NOT use wireless digital signals?
 
AM radio
 
Bluetooth
 
3G, 4G, LTE
 
WiFi connectivity
Which type of digital signal has been used to advance science & scientific investigations?
 
all of these have advanced science
 
faster, worldwide communication
 
digital probes for lab use
 
digital transmission of space probes


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