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Networking Fundamentals

Where to look first when a connection fails

입문 · Lessons 17 · Lab 3

Curriculum

The OSI and TCP/IP Layers

Read Your Own Pod's Network lab
Networking Fundamentals Check quiz
The Layer Model — What Each Layer Decides reading
Quiz: The Layer Model quiz

IP and Routing

TCP and UDP

TCP — How Connection and Reliability Are Built reading
UDP — What You Gain by Promising Nothing reading
Quiz: TCP and UDP quiz

DNS

DNS — Why dig Works but the Application Fails reading
Quiz: DNS quiz

HTTP and TLS

HTTP — A Stateless Protocol and Connection Reuse reading
TLS — Why the Browser Works and curl Fails reading
Speak HTTP by hand lab
Quiz: HTTP and TLS quiz

Reference docs