Data does not move by magic. This course follows a packet from application to wire and back — through the TCP/IP stack, routing protocols, DNS, TLS, and application-layer protocols.
Outcomes
- Describe the role of each layer in the TCP/IP stack
- Trace a packet through routing, DNS resolution, and TLS handshake
- Write simple networked programs using sockets
- Use Wireshark and other diagnostic tools to interpret live traffic
Outline
Start →- 01 Network Models The OSI and TCP/IP reference models as a framework for understanding protocol layers.
- 02 IP and Routing IPv4 addressing, subnetting, routing algorithms, and how packets find their destination.
- 03 Transport Layer UDP vs TCP: reliability, flow control, congestion control, and the three-way handshake.
- 04 Application Layer DNS, HTTP, TLS, and the protocols that applications depend on every day.