How does this come into play in our networks? Why would we want to subnet our network? And what in the world does that mean? Well, it is basically taking a huge network, and dividing the network into smaller, more manageable segments or parts.
Keep in mind what we have learned about how devices act; hubs do not have broadcast domains. They are basically a multiport repeater, so the more hubs you connect to each other, the more you are just creating a huge collision domain, waiting for that crash to happen.
Switches are better than hubs, because they create private collision domains. This allows for full-duplex, whereas a hub is a shared collision domain and can only go half-duplex. Switches, by default, are only using VLAN 1, which is the native VLAN where everyone exists. But, you do have the options to create more VLANs, therefore increasing the amount of broadcast...