Learn the basics of networking.
The difference between protocols like IP, TCP, and UDP.
The difference between IPv4 and IPv6.
The difference between routers and switches.
How to configure Cisco Catalyst switches.
How to configure Cisco IOS routers.
How to configure the OSPF routing protocol.
How to protect your routers with access-lists and VPNs.
How network automation impacts traditional network management
And many other topics…