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Questions and Answers
Which three types of media are most commonly used for communication?
Which three types of media are most commonly used for communication?
What is the main function of a transceiver in a communication system?
What is the main function of a transceiver in a communication system?
What is another term frequently used to refer to a communication medium?
What is another term frequently used to refer to a communication medium?
What phenomenon describes undesirable interference added to a signal during transmission?
What phenomenon describes undesirable interference added to a signal during transmission?
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How can a communication medium negatively impact a signal?
How can a communication medium negatively impact a signal?
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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.
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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!
