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
What is the role of sensors in smart lighting systems?
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Collecting data on occupancy and ambient light levels
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Generating electricity for the lighting system
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Providing physical support for the lighting fixtures
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Controlling the color of the emitted light
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.
Which communication protocol is commonly used in smart lighting networks?
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Zigbee
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Bluetooth
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Wi-Fi
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Ethernet
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.
Which of the following is a commonly used IoT connectivity protocol for short-range communication?
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Bluetooth
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Wi-Fi
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Zigbee
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Ethernet
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.
Which of the following is a cellular IoT technology that provides wide-area coverage?
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NB-IoT
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LoRaWAN
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Sigfox
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Wi-Fi
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.
Which of the following is a satellite IoT technology that provides global coverage?
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Iridium
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Globalstar
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Inmarsat
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Wi-Fi
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.
Which of the following is a protocol used for secure communication between IoT devices?
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.
Which of the following is a cloud platform commonly used for IoT applications?
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AWS IoT Core
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Azure IoT Hub
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Google Cloud IoT Core
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IBM Watson IoT Platform
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.
Which of the following is a technology used for wireless communication between IoT devices over long distances?
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Cellular
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Wi-Fi
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Bluetooth
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Zigbee
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.
Which of the following is a protocol used for data transfer between IoT devices and cloud platforms?
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.
Which of the following is a security measure used to protect IoT devices from unauthorized access?
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Encryption
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Authentication
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Firewalls
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Intrusion Detection Systems
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.
Which of the following is a technology used for wireless communication between IoT devices over short distances?
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Bluetooth
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Wi-Fi
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Cellular
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Zigbee
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.
Which of the following is a protocol used for device management and control in IoT systems?
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.
Which of the following is a cloud platform commonly used for IoT applications that require real-time data processing and analytics?
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AWS IoT Core
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Azure IoT Hub
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Google Cloud IoT Core
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IBM Watson IoT Platform
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.
Which of the following is a technology used for wireless communication between IoT devices in a mesh network?
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Bluetooth
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Wi-Fi
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Zigbee
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Cellular
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.
Which of the following is a security measure used to protect IoT devices from malware and other cyber threats?
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Encryption
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Authentication
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Firewalls
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Intrusion Detection Systems
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.