This week we learned about the network layer and focused on the data plane. I learned about two important concepts which was forwarding and routing. Forwarding, dealing with how data packets are moved between devices in a network, and routing, which determines the paths the data packets take across networks. In our lab assignments we learned about Network Address Translation (NAT), which allows communication between private network devices over public networks. The big assignment this week was our group programming assignment, the server chat program. I found this assignment to be particularly interesting because it provided me with a very basic but fundamental understanding of how chat programs are built.
This week, we developed a deeper understanding of the network control plane and explored routing algorithms such as Dijkstra and Bellman-Ford, focusing on how they determine the most efficient paths for data transfer. We also learned about the SDN control plane, which allows for dynamic network management and routing. In addition to the theory learned this week, we conducted a network lab exploring the use of a basic SDN controller using Mininet and Wireshark. We looked at how Internet Control Message Protocol (ICMP), can be used for network diagnostics, particularly for network troubleshooting with tools like ping and traceroute.
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