Electromagnetic Waves Communication

What is the electromagnetic spectrum?

• The electromagnetic spectrum is a form of currency.

• The electromagnetic spectrum is the range of all possible frequencies of electromagnetic radiation.

• The electromagnetic spectrum is a measurement of temperature.

• The electromagnetic spectrum is a type of musical instrument.

Name the different types of waves in the electromagnetic spectrum.

• sound waves, light waves, heat waves

• gravity waves, magnetic waves, electric waves

• visible waves, infrared waves, ultraviolet waves

• radio waves, microwaves, infrared waves, visible light, ultraviolet waves, X-rays, and gamma rays

What is the difference between analog and digital communication?

• Analog communication is faster than digital communication.

• Analog communication uses digital signals, while digital communication uses analog signals.

• Analog communication is more reliable than digital communication.

• Analog communication uses continuous signals, while digital communication uses discrete signals.

Which type of communication uses continuous signals?

• Analog communication

• Satellite communication

• Wireless communication

• Digital communication

Which type of communication uses discrete signals?

• Wireless

• Analog

• Optical

• Digital

What is encoding in communication?

• The process of converting information into a format that is difficult to understand by the recipient.

• The process of converting information into a format that can be easily transmitted and understood by the recipient.

• The process of converting information into a format that can only be transmitted through physical means.

• The process of converting information into a format that can be easily transmitted but not understood by the recipient.

Give an example of encoding in analog communication.

• Multiplexing

• Demodulation

• Modulation

• Amplification

What is decoding in communication?

• The process of converting information into a format that can be easily transmitted and understood by the recipient.

• Transmitting

• Interfering

• uses symbols to translate ideas or concepts into a coded message ready for communication.

Give an example of decoding in digital communication.

• Digital image decoding

• Digital video decoding

• Digital text decoding

• Digital audio decoding

How are analog and digital communication different in terms of signal transmission?

• Continuous vs discrete signals

• Analog signals can carry more information than digital signals

• Analog signals are more reliable than digital signals

• Analog signals are faster than digital signals