Advanced IoT systems that integrate with AI often rely on ________ to make real-time decisions.
- Cloud computing
- Edge computing
- Mainframe computing
- Quantum computing
Advanced IoT systems frequently rely on Edge computing to make real-time decisions. Edge computing involves processing data locally on IoT devices or at the edge of the network, reducing latency and enabling quicker responses in real-time applications.
A significant privacy challenge in IoT is:
- Limited availability of data
- Unauthorized access to sensitive data
- Rapid device obsolescence
- Decreased connectivity options
A significant privacy challenge in IoT is unauthorized access to sensitive data. IoT devices often collect and transmit sensitive information, making them attractive targets for cyberattacks.
Which of the following best describes the role of fog nodes in fog computing?
- Acting as intermediate nodes that process data between edge devices and the cloud.
- Controlling the temperature and humidity in data centers.
- Providing internet access to IoT devices.
- Storing data locally on IoT devices.
Fog nodes in fog computing act as intermediate nodes between edge devices and the cloud. They process and filter data locally before sending only the relevant data to the cloud, reducing the amount of data transmitted and improving efficiency.
A professional athlete is looking for a device that can monitor heart rate, sleep patterns, and physical activity. This is an example of:
- IoT (Internet of Things) technology
- Embedded systems
- Wearable technology
- Quantum computing
The device described, capable of monitoring heart rate, sleep patterns, and physical activity, is an example of wearable technology. Wearable devices like fitness trackers and smartwatches are designed to collect and analyze data related to the user's health and activities, making them popular choices for professional athletes and health enthusiasts.
Which of the following best describes the Internet of Things (IoT)?
- A network of interconnected household appliances.
- A new type of Internet browser.
- Devices connected to the Internet for data exchange.
- The use of the Internet for communication.
The Internet of Things (IoT) refers to the network of physical objects embedded with sensors, software, and other technologies for the purpose of connecting and exchanging data with other devices and systems over the Internet.
Imagine you are designing the architecture for a smart farming solution. The component that will process the data from soil moisture sensors and decide when to activate the irrigation system belongs to which layer of the IoT architecture?
- Application Layer
- Cloud Layer
- Edge Layer
- Fog Layer
In the context of IoT architecture, the component responsible for processing data from sensors and making real-time decisions, such as activating an irrigation system based on soil moisture data, typically belongs to the Edge Layer. The Edge Layer is closest to the IoT devices and handles data processing at the device or sensor level.
The protocol designed to work over UDP and target power-constrained IoT devices is ________.
- AMQP
- CoAP
- HTTP
- MQTT
The protocol designed to work over UDP for power-constrained IoT devices is CoAP (Constrained Application Protocol). CoAP is a lightweight, efficient, and secure protocol that is well-suited for IoT devices with limited resources. It is designed to minimize overhead and is ideal for applications with constrained networks and devices.
In a smart home project, a team is considering a protocol that can efficiently work in a constrained environment and can easily translate to HTTP for simplified integration with the web. They are most likely referring to:
- CoAP (Constrained Application Protocol)
- HTTP/2
- MQTT-SN (MQTT for Sensor Networks)
- WebSocket
CoAP (Constrained Application Protocol) is designed for constrained environments and is highly suitable for IoT applications. CoAP can be easily translated to HTTP, enabling integration with the web, while still being lightweight and efficient for constrained IoT devices.
For IoT networks that require low latency and lightweight security, ________ is often a recommended encryption method.
- AES-GCM
- ChaCha20-Poly1305
- DES
- RSA
In IoT networks needing low latency and lightweight security, ChaCha20-Poly1305 is recommended. It's a fast and secure encryption method, suitable for resource-constrained IoT devices.
When considering bi-directional communication in IoT, the protocol often recommended due to its low overhead and real-time capabilities is ________.
- HTTP
- MQTT
- WebSockets
- XMPP
For bi-directional communication in IoT, the protocol often recommended due to its low overhead and real-time capabilities is WebSockets. WebSockets provide full-duplex communication channels over a single TCP connection. They are well-suited for scenarios where low latency and real-time data exchange are crucial, making them a popular choice in IoT applications.