Netpractice 42 Tutorial -

The mask (e.g., 255.255.255.0 or /24 ) defines which part of the IP is the "street" (Network ID) and which is the "house" (Host ID).

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. netpractice 42 tutorial

The goal here is simple: make sure devices are on the same network. The mask (e

These are the "maps" inside a device or router that tell it which direction to send data for specific destinations. Level-by-Level Strategy Levels 1–3: The Basics of Local Communication The mask (e.g.

Check the Subnet Mask . If it’s /24 , the first three octets of all devices must be identical.