Embibe Experts Solutions for Chapter: Network and Internet Basics, Exercise 3: Exercise 3

The Communication system may be _____.

Data transfer using the telephone system is:

Li-Fi is a new technology being seen as an advancement over Wi-Fi. Consider these statements concerning Li-Fi:

$1$. Li-Fi uses the visible light spectrum, whereas Wi-Fi uses radio waves.

$2$. Li-Fi can penetrate water while Wi-Fi cannot.

$3$. Speed of Li-Fi is still not as fast as Wi-Fi, though.

Chose the correct statements:

The two elements that are frequently used for making transistors are-

Fiber optic technology is used in which among the field(s) mentioned below:

1. Endoscopy
2. Plumbing
3. Space Science

Select the correct answer using the code given below:

Consider the following statements about Digital Currency:

1. Virtual currencies and crypto-currencies are types of digital currencies.
2. Digital currencies cannot be used to buy physical goods.
3. It allows for instantaneous transactions and borderless transfer-of-ownership.

Which of the statements given above is/are true?

With reference to'Lifi' recently in the news, which of the following statements is/are correct?
1. It uses light as the medium for high-speed data transmission.
2. It is a wireless technology and is several times faster than 'WiFi'.
Select the correct answer using the code given below:

In which of the following areas can GPS technology be used?

1. Mobile phone operations.
2. Banking operations.
3. Controlling the power grids.

Select of the correct answer using the code below: