OSI & TCP/IP Model
Understand network layers and how data is encapsulated from app to wire.
1. OSI 7 Layers Explained
Learn the OSI model from Physical to Application—and which layers matter most for security analysts.
15 min
+24 XP
2. TCP/IP Model
Compare the four-layer TCP/IP stack to OSI and see how real networks are built today.
15 min
+24 XP
3. How Data Travels in Networks
Follow a packet from your PC through switches and routers to a web server.
15 min
+24 XP
4. Quiz — OSI Model
10-question quiz on OSI layers, TCP/IP, and how data moves across networks.
10 min
+24 XP