Netpractice - 42 Tutorial [best]

You cannot use the first address (Network ID) or the last address (Broadcast Address) in any range for a specific host. Levels 4–6: Introducing Routers Now you have a router connecting multiple subnets.

This tutorial breaks down the essential concepts and provides a roadmap for the common hurdles you'll face. Core Concepts: The Toolbox netpractice 42 tutorial

Routers connect different networks. If a device wants to send data outside its own "street," it must send it to the Default Gateway (the router’s IP). You cannot use the first address (Network ID)