What does IoT stand for?

• a) Internet of Technology
  

• b) Internet of Things
  

• c) Internet of Tools
  

• d) Internet of Testing

Answer explanation

IoT stands for Internet of Things, which refers to the network of interconnected devices that communicate and exchange data. The other options do not accurately represent this concept.

Which of the following is a key characteristic of IoT?

• a) Centralized control
  

• b) Limited device connectivity
  

• c) Interconnected devices and systems
  

• d) Manual data entry

Answer explanation

The key characteristic of IoT is c) Interconnected devices and systems, which allows for seamless communication and data exchange between various devices, enhancing automation and efficiency.

Which protocol is commonly used for communication in IoT devices?

• a) HTTP
  

• b) MQTT
  

• c) FTP
  

• d) SMTP

Answer explanation

MQTT (Message Queuing Telemetry Transport) is a lightweight messaging protocol designed for low-bandwidth, high-latency networks, making it ideal for IoT devices. In contrast, HTTP, FTP, and SMTP are less efficient for such applications.

In IoT, what does the "smart" in smart devices refer to?

• a) The device has built-in artificial intelligence

• a) The device has built-in artificial intelligence

• c) The device can connect to the internet and share data

• d) The device can be programmed in multiple languages

Which of the following is an example of an IoT application?

• a) Online banking

• b) Smart home systems

• c) Desktop software

• d) Web browsing

6. What role does a "sensor" play in an IoT system?

• a) It stores data

• b) It sends commands to other devices

• c) It collects data from the environment

• d) It provides connectivity to the cloud

Which of the following security challenges is common in IoT?

• a) Poor scalability

• b) Device interoperability

• c) Vulnerability to hacking and cyber-attacks

• d) Limited network coverage

Which of the following is NOT typically an IoT communication protocol?

• a) Bluetooth

• b) Zigbee

• c) TCP/IP

• d) USB

Which of the following best describes the "Thing" in IoT?

• a) Any object that can store data

• b) Any device with a battery

• c) Any device that can connect to the internet and collect or send data

• d) Any software that processes data

In an IoT network, what function does the "gateway" device perform?

• a) It processes data in real-time

• b) It acts as a bridge between IoT devices and the internet

• c) It provides power to IoT devices

• d) It stores large amounts of data