Principles of Electronic Communication ; A review

A complete communication system must include

• a modulator, demodulator and a channel

• a transmitter, a receiver, and a channel

• a transmitter, a receiver, and a antenna

• a multiplexer, a demultiplexes, and a channel

The process of modifying a high frequency carrier with the information to be transmitted is called the

• Multiplexing

• Detection

• Modulation

• Demodulation

Continuous voice or video signals are referred to as being

• baseband

• analog

• digital

• continuous wave

______ data are continuous and take discrete values

• digital

• analog or digital

• analog

• none of the choices

____ signals can have an infinite number of values in a range

• Analog

• Digital

• analog or digital

• none of the choices

An information that can be sent directly and unmodified over the medium or can be used to modulate a carrier for transmission over the medium is referred to as______

• Baseband Signal

• Broadband Signal

• Fiber Optic

• Fiber Optic

This is referred to as collection of electronic components and circuits that accepts the transmitted message from the channel and converts it back into a form understandable by humans.

• Transmitter

• Receiver

• Medium

• Channel

Many transmissions are of signals that originate in digital form but must be converted to analog form to match the transmission medium. This statement is

• True

• False

It is made up of oscillators, amplifiers, tuned circuits and filters, demodulators, frequency mixers, frequency synthesizers, and other circuits that converts into form suitable by the medium

• Transmitter

• Receiver

• Chanel

• Medium

The process of modifying a high frequency carrier with the information to be transmitted is called the

• Multiplexing

• Detection

• Modulation

• Demodulation