
Data Communications Quiz
Authored by Daniel Velasco
Information Technology (IT)
12th Grade

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40 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the modulation technique where carrier amplitude varies based on the baseband signal?
AM
FM
PM
PCM
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which signal type consists of discrete values?
Analog
Digital
Nonperiodic
Continuous
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does the term "attenuation" refer to in data communication?
Signal interference
Signal strength reduction over distance
Noise addition
Signal distortion
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the unit of frequency?
Volts
Hertz
Amps
Ohms
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which layer in the OSI model is responsible for routing and logical addressing?
Physical
Data Link
Network
Transport
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What type of signal is represented by a square wave?
Analog
Periodic
Digital
Continuous
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the process of converting an analog signal into a digital signal?
Sampling
Modulation
Demodulation
Analog-to-Digital Conversion
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