Fundementals

Overview & L1 (Physical)

• OSI Model
• Network Devices
• Interfaces & Cables
• Common Ports
• Subnet & Masks
• WLANs

L2 - L3 (Network Link)

• Packets (L3)
• MAC & Frame (L2)
• Routing (L3)
• IPv4 (L3 Address)
• IPv4 Headers
• DNS

L4 (Transport)

• TCP-IP
• TCP & UDP

L5 (Application)

• HTTP
• ICMP
• RPC

CLI

• Git
• Linux
• Network Commands
• Router CLI