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Questions and Answers
What type of radiation do mobile phones and wireless internet use?
What type of radiation do mobile phones and wireless internet use?
- Ultraviolet rays
- Gamma rays
- X-rays
- Microwaves (correct)
Why does Bluetooth use low energy radio waves or microwaves?
Why does Bluetooth use low energy radio waves or microwaves?
- To avoid wall penetration
- To increase data transmission speed
- To pass through walls (correct)
- To weaken the signal
Which type of signal is used by optical fibers for cable television and broadband?
Which type of signal is used by optical fibers for cable television and broadband?
- Digital signal (correct)
- Analog signal
- Infrared signal
- Ultraviolet signal
What is one benefit of digital signaling over analog signaling?
What is one benefit of digital signaling over analog signaling?
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What material is transparent to visible light and used in optical fibers?
What material is transparent to visible light and used in optical fibers?
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