Computer Knowledge
Internet of Things and Applications
2,811 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
Which IoT connectivity technology is known for its low power consumption and long-range capabilities?
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LoRa
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Wi-Fi
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Bluetooth
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Cellular
A
Correct answer
Explanation
LoRa (Long Range) is a low-power wide-area network (LPWAN) technology specifically designed for IoT applications, offering long-range connectivity with low power consumption.
What is the term used to describe the process of connecting IoT devices to the internet and other networks?
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IoT connectivity
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Device provisioning
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Network configuration
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Device onboarding
D
Correct answer
Explanation
Device onboarding refers to the process of connecting and configuring IoT devices to the internet and other networks, ensuring they can communicate and exchange data.
Which IoT connectivity protocol is commonly used for communication between devices and cloud platforms?
A
Correct answer
Explanation
MQTT (Message Queuing Telemetry Transport) is a lightweight messaging protocol specifically designed for IoT applications, enabling efficient communication between devices and cloud platforms.
What is the role of a gateway in IoT connectivity?
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Translating data formats
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Providing internet access
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Aggregating data from multiple devices
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All of the above
D
Correct answer
Explanation
Gateways in IoT connectivity serve multiple purposes, including translating data formats, providing internet access, and aggregating data from multiple devices before forwarding it to the cloud.
Which IoT connectivity technology is suitable for applications requiring high bandwidth and low latency?
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Wi-Fi
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Cellular
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LoRa
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Bluetooth
A
Correct answer
Explanation
Wi-Fi is known for its high bandwidth and low latency, making it suitable for IoT applications that require fast and reliable data transfer, such as video streaming and real-time control.
Which IoT connectivity technology is commonly used for short-range communication between devices?
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Bluetooth
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Wi-Fi
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LoRa
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Cellular
A
Correct answer
Explanation
Bluetooth is a widely adopted short-range wireless technology used for communication between devices over short distances, such as connecting smartphones to wireless headsets or IoT devices to sensors.
What is the purpose of a SIM card in IoT connectivity?
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Providing cellular connectivity
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Storing device information
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Authenticating devices on a network
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All of the above
D
Correct answer
Explanation
A SIM card in IoT connectivity serves multiple purposes, including providing cellular connectivity, storing device information, and authenticating devices on a network.
Which IoT connectivity technology is known for its ability to penetrate dense objects and operate in harsh environments?
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Wi-Fi
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Bluetooth
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LoRa
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Sigfox
D
Correct answer
Explanation
Sigfox is a low-power wide-area network (LPWAN) technology designed for IoT applications that require long-range connectivity and the ability to penetrate dense objects, making it suitable for use in harsh environments.
What is the term used to describe the process of managing and monitoring IoT devices and their connectivity?
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Device management
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Network management
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Connectivity management
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All of the above
D
Correct answer
Explanation
Device management, network management, and connectivity management collectively refer to the processes of managing and monitoring IoT devices, their connectivity, and the overall network infrastructure.
Which IoT connectivity technology is commonly used for communication between devices and nearby infrastructure?
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NFC
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Wi-Fi
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Bluetooth
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Cellular
A
Correct answer
Explanation
NFC (Near Field Communication) is a short-range wireless technology that enables communication between devices when they are in close proximity, often used for contactless payments and data exchange.
What is the term used to describe the ability of IoT devices to communicate with each other directly without relying on a central server?
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Device-to-device communication
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Peer-to-peer communication
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Ad hoc networking
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All of the above
D
Correct answer
Explanation
Device-to-device communication, peer-to-peer communication, and ad hoc networking all refer to the ability of IoT devices to communicate directly with each other without the need for a central server.
Which IoT connectivity technology is known for its low power consumption and long battery life?
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Wi-Fi
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Bluetooth
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LoRa
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Zigbee
D
Correct answer
Explanation
Zigbee is a low-power wireless technology specifically designed for IoT applications, offering long battery life and low power consumption, making it suitable for devices with limited power resources.
What is the primary goal of IoT application security?
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To protect IoT devices from physical damage
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To ensure the availability of IoT services
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To safeguard IoT data from unauthorized access and manipulation
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To improve the performance of IoT applications
C
Correct answer
Explanation
IoT application security aims to protect sensitive data transmitted, processed, and stored by IoT devices and applications from unauthorized access, modification, or disclosure.
What is the role of encryption in IoT application security?
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To protect data in transit
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To protect data at rest
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To authenticate IoT devices
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All of the above
D
Correct answer
Explanation
Encryption plays a crucial role in IoT application security by protecting data in transit, at rest, and during authentication of IoT devices.
Which of the following is a best practice for IoT application security?
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Implementing strong authentication mechanisms
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Regularly updating IoT devices and applications
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Using secure communication protocols
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All of the above
D
Correct answer
Explanation
Implementing strong authentication, regularly updating software, and using secure communication protocols are essential best practices for IoT application security.