Electronic Communication Overview

Questions and Answers

Which three types of media are most commonly used for communication?

Wireless networks, archived data, and infrared

Coaxial cables, electrical signals, and light waves

Radio waves, telephone lines, and optical fibers (correct)

Fiber optics, digital satellites, and microwave

What is the main function of a transceiver in a communication system?

To filter out undesirable interference from the signal

To recover the original information from the received signal

To convert and transmit signals through a specified medium (correct)

To amplify the original information signal before transmission

What is another term frequently used to refer to a communication medium?

Signal conduit

Transmission channel (correct)

Information pathway

Data corridor

What phenomenon describes undesirable interference added to a signal during transmission?

<p>Noise</p> Signup and view all the answers

How can a communication medium negatively impact a signal?

<p>By introducing delay and distortion during transmission</p> Signup and view all the answers

Study Notes

Electronic Communication

Began in the 19th century.

Elements of Communication System

Four main elements:
- Information Source: Originates the message.
- Transmitter: Converts message into a signal.
- Communication Medium: Pathway for the signal transmission.
- Receiver: Converts the signal back into the original message.
Diagram illustrating relationship: Information Source → Transmitter → Communication Medium → Receiver.

Types of Media Used for Communication

Five types of media include:
- Wired: Cables like coaxial and fiber optics.
- Wireless: Radio waves, microwaves.
- Optical: Light-based methods.
- Satellite: Uses satellites for transmission.
- Internet: Digital transmission through various protocols.
Three most commonly used: Wired, Wireless, Internet.

Signal Conversion Device

The device used to convert an information signal to a compatible signal is called a modem (modulator-demodulator).

Signal Recovery Equipment

Demodulator: Acquires a signal from a communication medium and recovers the original information signal.

Transceiver Definition

A transceiver is a device that can both transmit and receive signals.

Effects of Communication Medium on Signal

Two ways a communication medium can affect a signal:
- Attenuation: Reduction in signal strength over distance.
- Distortion: Alteration in the signal waveform as it travels.

Alternative Name for Communication Medium

Another name for a communication medium is transmission medium.

Undesirable Interference

Undesirable interference added to a transmitted signal is referred to as noise.

Common Sources of Interference

Three common sources of interference include:
- Electromagnetic Interference (EMI): Caused by electrical devices.
- Radio Frequency Interference (RFI): Caused by radio signals.
- Crosstalk: Interference from adjacent communication lines.

Description

This quiz covers the basic concepts of electronic communication, including its historical origins and the key elements of a communication system. Additionally, it explores different types of media used for communication and the function of signal conversion devices like modems. Test your understanding of these fundamental aspects!