IoT can be best understood as an ecosystem where:

  • Devices both send and receive information.
  • Devices only receive information.
  • Devices only send information.
  • Devices operate independently without data exchange.
IoT is an ecosystem where devices are interconnected and can both send and receive information. This bi-directional exchange of data allows for more dynamic and responsive systems that can adjust based on the data they receive.

Which protocol is designed specifically for constrained devices and low-bandwidth, high-latency networks in IoT?

  • HTTP
  • MQTT
  • TCP
  • UDP
MQTT (Message Queuing Telemetry Transport) is designed specifically for constrained devices and low-bandwidth, high-latency networks in IoT. It is a lightweight and efficient protocol that allows devices to communicate with minimal overhead.

How does predictive analytics in IoT benefit industries such as manufacturing?

  • Ensures data encryption at rest
  • Identifies production issues early
  • Increases device connectivity
  • Provides real-time data sharing
Predictive analytics in IoT can help manufacturing by identifying production issues early. It can detect anomalies and trends, allowing manufacturers to address problems before they cause significant disruptions. This results in improved production efficiency and reduced downtime.

Which of the following is a low-power wireless protocol specifically designed for short-range communication in IoT devices?

  • 5G
  • Bluetooth
  • Wi-Fi
  • Zigbee
Zigbee is a low-power wireless communication protocol designed for short-range communication in IoT (Internet of Things) devices. It is known for its energy efficiency, making it suitable for battery-operated IoT devices with limited power resources. Zigbee is often used for home automation, industrial control, and other IoT applications that require reliable, low-power communication.

In the context of IoT, actuators:

  • Are a type of IoT device
  • Collect data from the environment
  • Control and manipulate physical devices and systems
  • Convert digital signals into analog signals
Actuators in the context of IoT are devices that control and manipulate physical systems. They receive signals from a central controller or other IoT devices and perform actions like opening valves, turning motors, or adjusting settings to affect the physical world. They are essential for making automated decisions and responses in IoT applications.

In a blockchain-based IoT security system, which feature ensures that data once written cannot be altered retroactively?

  • Decentralization
  • Encryption
  • Immutability
  • Smart Contracts
Immutability is a core feature of blockchain technology. Once data is written to a blockchain, it cannot be altered retroactively, providing a tamper-proof record of information. Encryption, Decentralization, and Smart Contracts are relevant but serve different purposes.

In the context of IoT device connectivity, what is the primary advantage of using MQTT over HTTP?

  • MQTT has better support for caching
  • MQTT is better for devices with high bandwidth
  • MQTT is more secure due to its encrypted communication
  • MQTT supports bidirectional communication
MQTT (Message Queuing Telemetry Transport) is preferred in IoT because it offers a lightweight and efficient communication protocol. MQTT is known for its low overhead, which makes it suitable for devices with limited resources. Additionally, MQTT offers encrypted communication for enhanced security, which is crucial in IoT applications where data privacy is a concern.

Which of the following sensors is best suited for detecting motion or orientation changes in a device?

  • Temperature Sensor
  • Light Sensor
  • Accelerometer
  • Pressure Sensor
An accelerometer is best suited for detecting motion or orientation changes in a device. It measures acceleration forces, which can be used to determine changes in motion or position. Accelerometers are commonly found in smartphones and other devices to enable features like screen rotation and step counting.

Which of the following is a key characteristic of Wireless Sensor Networks (WSN)?

  • Energy-Efficient Operation
  • Gigabit Data Transfer Speed
  • High Latency Communication
  • Large Data Storage Capacity
WSNs are designed for energy-efficient operation since many sensors are battery-powered and must operate for extended periods without recharging.

A healthcare organization wants to deploy IoT devices for patient monitoring. Their primary concern is ensuring data privacy and unauthorized access. They should prioritize:

  • Data analytics
  • Data encryption and access control
  • Data transmission speed
  • Device cost reduction
Ensuring data privacy and protection against unauthorized access is a paramount concern for healthcare IoT deployments. This involves implementing robust data encryption, access control mechanisms, and compliance with regulations like HIPAA (Health Insurance Portability and Accountability Act) to safeguard patient data. Reducing device costs, data transmission speed, and analytics are secondary considerations in this context.