Computer Knowledge

Internet of Things and Applications

2,876 Questions

Internet of Things (IoT) questions cover the connectivity of devices, cloud platforms, and sensor networks. Topics include IoT security, data analytics, short-range wireless technologies, and low-power applications. These concepts are vital for computer knowledge sections in various competitive exams.

IoT ConnectivityIoT SecurityData AnalyticsCloud PlatformsWireless Technology

Internet of Things and Applications Questions

Multiple choice

What is the role of sensors in smart lighting systems?

  1. Collecting data on occupancy and ambient light levels

  2. Generating electricity for the lighting system

  3. Providing physical support for the lighting fixtures

  4. Controlling the color of the emitted light

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sensors in smart lighting systems collect data on occupancy and ambient light levels to enable adaptive lighting control and energy optimization.

Multiple choice

Which communication protocol is commonly used in smart lighting networks?

  1. Zigbee

  2. Bluetooth

  3. Wi-Fi

  4. Ethernet

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Zigbee is a widely adopted communication protocol for smart lighting networks due to its low power consumption, mesh topology, and reliability.

Multiple choice

Which of the following is a commonly used IoT connectivity protocol for short-range communication?

  1. Bluetooth

  2. Wi-Fi

  3. Zigbee

  4. Ethernet

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bluetooth is a wireless technology standard used for short-range communication between devices. It is commonly used in IoT applications for connecting sensors, actuators, and other devices to a central hub or gateway.

Multiple choice

Which of the following is a cellular IoT technology that provides wide-area coverage?

  1. NB-IoT

  2. LoRaWAN

  3. Sigfox

  4. Wi-Fi

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

NB-IoT (Narrowband IoT) is a cellular IoT technology that is designed for low-power, wide-area networks. It is commonly used in IoT applications that require long battery life and low data rates, such as smart meters, asset trackers, and environmental sensors.

Multiple choice

Which of the following is a satellite IoT technology that provides global coverage?

  1. Iridium

  2. Globalstar

  3. Inmarsat

  4. Wi-Fi

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Iridium is a satellite IoT technology that provides global coverage. It is commonly used in IoT applications that require communication in remote or underserved areas, such as maritime, aviation, and emergency response.

Multiple choice

Which of the following is a protocol used for secure communication between IoT devices?

  1. MQTT

  2. CoAP

  3. TLS

  4. HTTP

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

TLS (Transport Layer Security) is a protocol used for secure communication between IoT devices. It provides encryption and authentication to protect data in transit from eavesdropping and tampering.

Multiple choice

Which of the following is a cloud platform commonly used for IoT applications?

  1. AWS IoT Core

  2. Azure IoT Hub

  3. Google Cloud IoT Core

  4. IBM Watson IoT Platform

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

AWS IoT Core is a cloud platform provided by Amazon Web Services (AWS) for IoT applications. It offers a range of services for connecting, managing, and securing IoT devices, as well as collecting and analyzing data from those devices.

Multiple choice

Which of the following is a technology used for wireless communication between IoT devices over long distances?

  1. Cellular

  2. Wi-Fi

  3. Bluetooth

  4. Zigbee

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cellular technology is used for wireless communication between IoT devices over long distances. It allows IoT devices to connect to the internet through cellular networks, providing reliable and secure connectivity.

Multiple choice

Which of the following is a protocol used for data transfer between IoT devices and cloud platforms?

  1. MQTT

  2. CoAP

  3. HTTP

  4. TCP

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

MQTT (Message Queuing Telemetry Transport) is a protocol used for data transfer between IoT devices and cloud platforms. It is a lightweight protocol that is designed for low-power devices and networks, making it suitable for IoT applications.

Multiple choice

Which of the following is a security measure used to protect IoT devices from unauthorized access?

  1. Encryption

  2. Authentication

  3. Firewalls

  4. Intrusion Detection Systems

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Encryption is a security measure used to protect IoT devices from unauthorized access. It involves encrypting data transmitted between IoT devices and cloud platforms or other networks, making it unreadable to unauthorized parties.

Multiple choice

Which of the following is a technology used for wireless communication between IoT devices over short distances?

  1. Bluetooth

  2. Wi-Fi

  3. Cellular

  4. Zigbee

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bluetooth is a technology used for wireless communication between IoT devices over short distances. It allows IoT devices to connect to each other and exchange data without the need for a wired connection.

Multiple choice

Which of the following is a protocol used for device management and control in IoT systems?

  1. MQTT

  2. CoAP

  3. HTTP

  4. LwM2M

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

LwM2M (Lightweight Machine-to-Machine) is a protocol used for device management and control in IoT systems. It is a lightweight protocol that is designed for low-power devices and networks, making it suitable for IoT applications.

Multiple choice

Which of the following is a cloud platform commonly used for IoT applications that require real-time data processing and analytics?

  1. AWS IoT Core

  2. Azure IoT Hub

  3. Google Cloud IoT Core

  4. IBM Watson IoT Platform

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Google Cloud IoT Core is a cloud platform provided by Google Cloud Platform (GCP) for IoT applications that require real-time data processing and analytics. It offers a range of services for connecting, managing, and securing IoT devices, as well as collecting and analyzing data from those devices in real time.

Multiple choice

Which of the following is a technology used for wireless communication between IoT devices in a mesh network?

  1. Bluetooth

  2. Wi-Fi

  3. Zigbee

  4. Cellular

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Zigbee is a technology used for wireless communication between IoT devices in a mesh network. It allows IoT devices to connect to each other and form a self-healing network, where data can be routed through multiple devices to reach its destination.

Multiple choice

Which of the following is a security measure used to protect IoT devices from malware and other cyber threats?

  1. Encryption

  2. Authentication

  3. Firewalls

  4. Intrusion Detection Systems

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Intrusion Detection Systems (IDS) are security measures used to protect IoT devices from malware and other cyber threats. They monitor network traffic and device activity for suspicious behavior, and can alert administrators to potential security breaches.