LAN Essentials
Switches, MAC addresses, ARP, DHCP, and a local network exploration lab.
1. Switches, Hubs & MAC Addresses
How Layer 2 devices forward frames—and why MAC addresses matter for LAN security.
15 min
+23 XP
2. ARP — Finding Neighbors on a LAN
How devices map IP addresses to MAC addresses, and why ARP poisoning is a risk.
15 min
+23 XP
3. DHCP — Automatic Addressing
The DORA handshake that hands out IP, gateway, and DNS—and what rogue DHCP can do.
15 min
+23 XP
4. Lab — Explore Your Local Network
Inventory interfaces, ARP neighbors, listeners, and routes with copy-paste commands.
25 min
+23 XP
5. Quiz — Networking Basics Final
Final 10-question quiz across OSI, IP, protocols, ports, NAT, MAC, ARP, and DHCP.
10 min
+23 XP