Question

What is the use of the Ethernet library?

(a) To connect the Arduino to Bluetooth

(b) To connect the Arduino to Wi-Fi

(c) To connect the Arduino to Li-Fi

(d) To connect the Arduino to Ethernet

I have been asked this question at a job interview.

My question is from Standard Libraries in division Arduino Programming of Arduino

Answer 1

Right choice is (d) To connect the Arduino to Ethernet

To explain: The Ethernet Library is used to connect the Arduino to the internet via an Ethernet connection. This library is designed to be used with any Arduino Ethernet Shields or any other W5100, W5200, etc. based devices.