Q- With reference to communication technologies- which of the following statements is-are correct-1- Wi-Fi runs on light waves-380 nm to 780 nm wavelength-2- LiFi signals cannot pass through walls-3- 5G has Ultra low latency of about 1 millisecond-Select the correct answer using the code given below-A-1 onlyB-2 and 3 onlyC-1-2 and 3D-1 and 3 only

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Q. With refer...

Question

Q. With reference to communication technologies, which of the following statements is/are correct?

Select the correct answer using the code given below:

1 only

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1 and 3 only

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2 and 3 only

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1, 2 and 3

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Solution

The correct option is C
2 and 3 only
Explanation:

Statement 1 is incorrect: Wi-Fi stands for “wireless fidelity” and has an Operating frequency -2.4GHz or 5.2GHZ bands.

Statement 2 is correct: LiFi stands for “Life Fidelity” and transmits data via light. So Li-Fi signals cannot pass through walls.

Statement 3 is correct: 5G is a wireless communication technology using radio waves or radio frequency (RF) energy to transmit and receive data.5G has Ultra low latency of about 1 millisecond.

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Select the correct answer using the code given below: