CST 311 Computer Networks - Week 3

Week 3 Overview:

This week introduced the transport layer, focusing on how data moves between applications running on different hosts. We covered the core concepts of multiplexing and demultiplexing, which allow multiple applications to share the same network connection while keeping data organized. The lectures also went over UDP, the connectionless protocol known for its simplicity and speed, but lack of reliability. Through quizzes and examples, we learned how UDP works in practice, including checksum calculations for error detection. The Wireshark TCP lab previewed what we’d dive deeper into next week, giving us a look at how TCP segments appear in real network captures. Overall, this week built a strong understanding of how transport protocols serve as the middle layer between applications and the network core.

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