Remember the parts of an IP address for each class.

You need to remember that a Class A IP address is viewed as network.node.node.node, a Class B IP address is shown as network.network.node.node, and a Class C is shown as network.network.network.node. Read the full story

Know how to identify a standard access list.

Standard access lists can filter only by source address. Also, they cannot filter by protocol or port. Read the full story

This section looks at a router with a clean configuration. First we walk through and erase the startup-config file stored in NVRAM. After that, we look at the default configuration of a router. Read the full story