CST 311 Computer Networks - Week 5

 Week 5 Overview:

This week introduced the network layer’s data plane, focusing on how packets are forwarded from source to destination across networks. We studied the role of routers, packet switching, and datagram forwarding, as well as the structure of the IP header and how IP addressing works. A major topic was subnetting, learning how to divide IP address spaces efficiently and NAT (Network Address Translation), which allows multiple private devices to share one public IP. The Wireshark IP and NAT labs gave us hands-on experience capturing and analyzing packets to see how IP addresses change through routers and NAT devices. Through the quizzes and practice problems, we became more confident reading IP headers, identifying subnet masks, and understanding how routing decisions are made inside the network layer.

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