10 Questions
What is one key advantage of radio waves for long-distance broadcasting?
They can penetrate walls easily
Why are radio wave sub-bands described as having a low data rate for digital communications?
The sub-bands and the radio wave band are narrow
What is a distinguishing feature of microwaves compared to radio waves?
They have a higher frequency range
What is a key advantage of using unidirectional antennas in microwave communication?
They allow for easier alignment between sending and receiving antennas
Why are very high-frequency microwaves unable to penetrate walls effectively?
They are absorbed by walls due to their high frequency
What is a challenge associated with the use of microwave waves for long-distance communication?
The need for multiple repeaters along the transmission path
Why are infrared waves not suitable for long-range communication?
They cannot penetrate walls due to their high frequencies.
What is bandwidth in the context of network performance?
The range of frequencies that a channel can pass.
Why can't infrared waves be effectively used for outdoor communication?
Sun's rays containing infrared can interfere with the communication.
What does the 'bandwidth in bits per second' measure in a network?
The speed of bit transmission in a network.
Test your knowledge on the characteristics of microwave antennas, including the need for alignment, unidirectional properties, and line-of-sight propagation. Understand why towers with mounted antennas need to be in direct sight of each other for effective transmission.
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