IoT Nodemcu

What is NodeMCU?

• A programming language

• A microcontroller board

• An operating system

• A cloud computing platform

NodeMCU is based on which microcontroller?

• Arduino Uno

• ESP8266
• Raspberry Pi

• STM32

What is the primary purpose of NodeMCU?

• Gaming console

• Home automation

• Music player

• GPS navigation

NodeMCU can be programmed using which development environment?

• Microsoft Word

• Notepad

• Arduino IDE

• Adobe Photoshop

Which of the following is NOT a feature of NodeMCU?

• Analog-to-digital conversion

• Built-in display

• Deep sleep mode

• PWM output

What is the Arduino IoT Cloud?

• An online platform for managing IoT devices

• A type of Arduino board
• A cloud storage service
• A programming language

Which programming language is commonly used to program devices for the Arduino IoT Cloud?

• Java

• Python

• C++

• JavaScript

How is data typically transmitted between an IoT device and the Arduino IoT Cloud?

• SMS messages

• Bluetooth only

• Over Wi-Fi

• 1. Radio waves

How do you set a digital pin to a HIGH voltage level using digitalWrite?

• digitalWrite(HIGH, pin)

• digitalWrite(1, pin)

• digitalWrite(pin, 0)

• digitalWrite(pin, HIGH)

What is the purpose of setting a digital pin to a LOW voltage level using digitalWrite?

• It turns on an LED connected to the pin.

• It reads the analog value of the pin.

• It turns off an LED connected to the pin.

• It enables PWM output on the pin.