Fundamentals of Data & Signal

It is the electric or electromagnetic impulses used to encode and transmit data.

• Data

• Signal

• Communication

• Noise

It is best describe as the unwanted electrical or electromagnetic energy that degrades the quality of signals and data.

• Data

• Signal

• Communication

• Noise

True or False. The ability to separate noise from a digital waveform is one of the great strengths of analog systems.

• True

• False

Signal generation is required for communication, one of the signal properties should be, _____________________.

• allocate the total capacity of a transmission medium

• determine when a signal begins to arrive and when it ends

• capable of being propagated through the transmission system

• two parties to engage in a telephone conversation

What are the characteristics that data and signals have in common?

• They are represented as continuous waveforms only

• They are represented in the form of binary 1s and 0s only

• They can exist in either analog or digital form

• Not in the choices

The range of frequencies that a signal spans from minimum to maximum is called the __________________?

• Spectrum

• Bandwidth

• Period

• Phase

Converting analog data to digital signals is generally called ___________?

• Attenuation

• Amplification

• Modulation

• Digitization

It is a relative measure of signal loss or gain and it is used to measure the logarithmic loss or gain of a signal.

• Data Rate

• Decibel

• Data Rate

• Baud Rate

It is the weakening of a signal's strength due to noise, distance or other external factors.

• Amplification

• Attenuation

• Decibel

• Modulation

A process of sending data over a signal by varying either its amplitude, frequency, or phase.

• Amplification

• Attenuation

• Decibel

• Modulation