Data Communications Quiz

What is the modulation technique where carrier amplitude varies based on the baseband signal?

• AM

• FM

• PM

• PCM

Which signal type consists of discrete values?

• Analog

• Digital

• Nonperiodic

• Continuous

What does the term "attenuation" refer to in data communication?

• Signal interference

• Signal strength reduction over distance

• Noise addition

• Signal distortion

What is the unit of frequency?

• Volts

• Hertz

• Amps

• Ohms

Which layer in the OSI model is responsible for routing and logical addressing?

• Physical

• Data Link

• Network

• Transport

What type of signal is represented by a square wave?

• Analog

• Periodic

• Digital

• Continuous

What is the process of converting an analog signal into a digital signal?

• Sampling

• Modulation

• Demodulation

• Analog-to-Digital Conversion

Which signal terminology is related to the distance between two peaks of a wave?

• Amplitude

• Frequency

• Wavelength

• Bitrate

What is the term for the time required for one full wave cycle?

• Period

• Frequency

• Wavelength

• Amplitude

What is the range of IPv4 addresses?

• 16 bits

• 32 bits

• 64 bits

• 128 bits