Ethical Hacking Essentials Practice Test

Which layer in the IoT architecture is responsible for bridging the gap between two endpoints and performing functions such as message routing and identification?

1. Access gateway layer

2. Edge technology layer

3. Internet layer

4. Middleware layer

The correct answer is: Access gateway layer

The access gateway layer serves as a critical component in the IoT architecture by acting as an intermediary between two endpoints. It facilitates communication by enabling devices to connect and transmit data effectively, thereby bridging the gap that may exist due to differences in communication protocols or network infrastructures. This layer handles essential functionalities such as message routing, ensuring that data from one endpoint reaches its intended destination efficiently. Additionally, it may perform identification functions, allowing for the recognition and validation of devices within the network. Such capabilities are vital in maintaining seamless connectivity and interoperability in IoT environments. The other layers have distinct roles that do not primarily focus on bridging endpoints. The edge technology layer pertains more to the physical devices and sensors at the edge of the network, while the internet layer involves the broader internet connectivity aspects. The middleware layer, while important for integrating various services and applications in IoT, is not primarily tasked with the responsibility of direct communication between endpoints like the access gateway layer is.