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What kind of device is the ESP8266 WiFi Module?

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What kind of device is the ESP8266 WiFi Module?

(a) Passive Sensor

(b) Active Sensor

(c) Networking Device

(d) Switching Device

This question was addressed to me during an interview.

Asked question is from ESP8266 Wifi Module topic in section Interfacing of Sensors, Actuators, and Other Modules of Arduino

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The correct answer is (c) Networking Device

To explain: The ESP8266 WiFi Module is a networking device since it’s main function in any system is to be able to connect to any nearby WiFi network for uploading or downloading data hence enabling IOT.

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