Q: You have installed a device at the physical layer. All of the systems you connect to this device will talk to each other at the same time. What have you installed?
or
Q: A gadget that you installed is at the physical layer. Your connected systems will all communicate with one another simultaneously. What have you set up?
- Client
- Hub
- Server
- Router
Explanation: If you have installed a device at the physical layer and all of the systems that are linked to this device can communicate with each other simultaneously, you have probably installed a hub. A hub is a fundamental networking device that links numerous devices to one another inside a local area network (LAN). It works at the physical layer of the OSI model and is part of the OSI model. However, it is essential to keep in mind that hubs function in a shared environment, which may result in the occurrence of possible collisions and a decrease in the effectiveness of network communication. Because of their superior performance and ability to prevent collisions, switches have largely replaced hubs as the device of choice in contemporary network configurations.
