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

Which of the following is a common type of IoT security attack that targets the availability of services?

  1. Malware

  2. Phishing

  3. Denial-of-Service (DoS)

  4. Man-in-the-Middle (MitM)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A DoS attack aims to disrupt the normal operation of a service by flooding it with excessive requests.

Multiple choice

Which of the following is a key research area in IoT security?

  1. Developing secure communication protocols for IoT networks

  2. Exploring blockchain-based solutions for IoT security

  3. Designing lightweight encryption algorithms for resource-constrained devices

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All of the options are active research areas in IoT security.

Multiple choice

Which of the following is a common defense mechanism used to protect IoT devices from unauthorized access?

  1. Firewalls

  2. Intrusion Detection Systems (IDS)

  3. Secure Boot

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Firewalls, IDS, and Secure Boot are all commonly used defense mechanisms for IoT devices.

Multiple choice

Which of the following is a best practice for securing IoT networks?

  1. Using strong passwords and encryption

  2. Regularly updating firmware and software

  3. Segmenting IoT networks from other networks

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All of the options are important best practices for securing IoT networks.

Multiple choice

Which of the following is an emerging threat to IoT security?

  1. Quantum computing

  2. Artificial intelligence (AI)-powered attacks

  3. 5G-enabled IoT devices

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All of the options are emerging threats to IoT security.

Multiple choice

Which of the following is a widely used wireless technology for IoT devices?

  1. Bluetooth

  2. Wi-Fi

  3. Zigbee

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bluetooth, Wi-Fi, and Zigbee are all commonly used wireless technologies for IoT devices, each with its own advantages and applications.

Multiple choice

What is the primary function of a cellular modem in IoT connectivity?

  1. Providing internet access

  2. Enabling communication with satellites

  3. Transmitting data over cellular networks

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A cellular modem's main purpose is to transmit data over cellular networks, allowing IoT devices to communicate with the internet and other devices.

Multiple choice

Which IoT connectivity technology is known for its low power consumption and long-range capabilities?

  1. LoRa

  2. Wi-Fi

  3. Bluetooth

  4. Cellular
Reveal answer Fill a bubble to check yourself
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.

Multiple choice

What is the term used to describe the process of connecting IoT devices to the internet and other networks?

  1. IoT connectivity

  2. Device provisioning

  3. Network configuration

  4. Device onboarding
Reveal answer Fill a bubble to check yourself
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.

Multiple choice

Which IoT connectivity protocol is commonly used for communication between devices and cloud platforms?

  1. MQTT

  2. HTTP

  3. TCP/IP

  4. UDP
Reveal answer Fill a bubble to check yourself
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.

Multiple choice

What is the role of a gateway in IoT connectivity?

  1. Translating data formats

  2. Providing internet access

  3. Aggregating data from multiple devices

  4. All of the above
Reveal answer Fill a bubble to check yourself
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.

Multiple choice

Which IoT connectivity technology is suitable for applications requiring high bandwidth and low latency?

  1. Wi-Fi

  2. Cellular

  3. LoRa

  4. Bluetooth
Reveal answer Fill a bubble to check yourself
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.

Multiple choice

Which IoT connectivity technology is commonly used for short-range communication between devices?

  1. Bluetooth

  2. Wi-Fi

  3. LoRa

  4. Cellular
Reveal answer Fill a bubble to check yourself
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.

Multiple choice

What is the purpose of a SIM card in IoT connectivity?

  1. Providing cellular connectivity

  2. Storing device information

  3. Authenticating devices on a network

  4. All of the above
Reveal answer Fill a bubble to check yourself
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.

Multiple choice

Which IoT connectivity technology is known for its ability to penetrate dense objects and operate in harsh environments?

  1. Wi-Fi

  2. Bluetooth

  3. LoRa

  4. Sigfox
Reveal answer Fill a bubble to check yourself
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.