IoT Quiz

Which protocol is commonly used in IoT for messaging and communication?

• HTTP

• FTP

• MQTT

• SMTP

What does IoT stand for?

• Internet of Technology

• Internet of Things

• Internet of Tools

• Internet of Trends

What is the role of a subscriber in MQTT?

• To publish messages to a topic

• To forward messages to other brokers

• To receive messages from topics it subscribes to

• To manage connections and sessions

What is the default port number for MQTT over TCP?

• 80

• 1883

• 8080

• 443

In MQTT, what is the role of a subscriber?

• To send messages to a topic

• To filter messages by topic

• To receive messages from a topic

• To store messages permanently

What is a disadvantage of using Wi-Fi for IoT applications?

• Low data rates

• Limited availability

• High power consumption

• Long range

In MQTT, what is the role of a publisher?

• To receive messages from a topic

• To filter messages by topic

• To send messages to a topic

• To store messages permanently

In MQTT, what is a topic?

• A type of client

• A string used to filter messages

• A method of message encryption

• A type of QoS level

Which of the following is a pro of using Bluetooth Low Energy (BLE) in IoT?

• High power consumption

• Limited range

• Low power consumption

• High data rates

What type of broker is used in MQTT implementation?

• Centralized broker like Mosquitto

• Decentralized peer-to-peer broker

• Client-based broker

• Serverless broker