This TCP Fundamentals course provides a deep and practical understanding of how the Transmission Control Protocol (TCP) works within the TCP/IP model. It is designed for learners who want to go beyond theory and understand how real network communication happens at a packet level.

The course begins with a detailed explanation of the TCP three-way handshake, which is the process used to establish a reliable connection between two devices. You will learn how SYN, SYN-ACK, and ACK packets work together to create a stable communication channel before data transfer begins.

The course then explores TCP behavior in real network environments using Wireshark analysis. This helps you visualize how packets are sent, received, and acknowledged in real time.

You will also study important TCP concepts such as sequence numbers, which ensure data is delivered in the correct order, and retransmissions, which handle lost or corrupted packets to maintain reliability.

Additional topics include MTU vs MSS, explaining how data size affects transmission efficiency, and TCP window size, which controls how much data can be sent before requiring acknowledgment.

By the end of this course, you will have a strong, practical understanding of TCP operations and how reliable communication is achieved in modern networks.