IoT Quiz

What is an Arduino primarily used for in an IoT setup?

• Cloud data storage

• Interfacing with physical sensors and actuators

• Routing network packets

• Hosting websites

Which device is generally more powerful and can run a full operating system like Linux?

• Arduino Uno

• ESP8266

• Raspberry Pi

• DHT22

What is the role of an IoT Gateway in an IoT network?

• It bridges sensor devices to the internet or cloud

• It measures temperature

• It transmits data directly to the actuator

• It is only a power supply for devices

LPWAN technologies such as LoRa and Sigfox are preferred for:

• High bandwidth video streaming

• Processing big data on the cloud

• Real-time AR/VR experiences

• Long-distance, low-power communications

Which of the following is a lightweight publish/subscribe protocol commonly used in IoT?

• HTTP

• FTP

• MQTT

• SNMP

Which LPWAN technology allows devices to communicate over tens of kilometers with very low power consumption?

• LoRa

• WiFi

• Bluetooth

• Ethernet

CoAP (Constrained Application Protocol) is designed for:

• Audio compression

• Full desktop applications

• Large-scale video streaming

• Resource-constrained devices with low bandwidth networks

Which protocol is built on top of HTTP and often used for bi-directional messaging in IoT?

• MQTT

• XMPP

• TCP

• POP3

What is a sensor in the context of IoT?

• A device that detects or measures a physical property and converts it into a signal

• A device that processes all incoming data

• A device that transmits radio waves to the cloud

• A protocol for sending messages

Why is Sigfox often chosen for IoT devices?

• It supports video streaming at 4K

• It requires constant WiFi connection

• It is optimized for web browsing

• It provides a low-power, long-distance wireless connection with small payloads