220-801 · Question #413
Which of the following transmission methods is dependent on line of sight?
The correct answer is D. IR. Infrared (IR) transmission requires a clear, unobstructed line of sight between the transmitter and receiver because IR signals cannot pass through solid objects. This is why TV remotes must be pointed directly at the TV. 802.11 Wi-Fi, RF (Radio Frequency), and Bluetooth all…
Question
Which of the following transmission methods is dependent on line of sight?
Options
- A802.11
- BRF
- CBluetooth
- DIR
How the community answered
(34 responses)- A6% (2)
- C3% (1)
- D91% (31)
Explanation
Infrared (IR) transmission requires a clear, unobstructed line of sight between the transmitter and receiver because IR signals cannot pass through solid objects. This is why TV remotes must be pointed directly at the TV. 802.11 Wi-Fi, RF (Radio Frequency), and Bluetooth all use radio waves that can diffract around obstacles and penetrate walls to varying degrees, making them non-line-of-sight technologies suitable for use through barriers.
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