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Explore the fundamental concepts, protocols, and architectures of computer networking through this comprehensive 12-hour course that takes you on a complete journey through the networking stack. Master how data travels from physical media access control up to complex application layer protocols like HTTP and DNS using a hands-on pen-and-paper methodology. Begin with networking basics including the OSI model, network topologies, and data communication components, then dive deep into IP addressing concepts covering binary conversion, IPv4 logical addressing, classful vs classless addressing, and advanced subnetting techniques including CIDR and VLSM. Learn critical error detection and flow control mechanisms including CRC polynomial notation, Hamming distance correction, parity methods, and protocols like Stop-and-Wait ARQ, Go-Back-N, and Selective Repeat. Examine detailed protocol headers for IPv4 and TCP, understanding sequence numbers, acknowledgments, flags, and the three-way handshake process. Discover advanced networking concepts including TCP congestion control policies, collision detection methods like CSMA/CD, routing algorithms comparing distance vector and link state approaches, and the differences between circuit and packet switching. Master application layer protocols including email systems (SMTP, POP3, IMAP), DNS hierarchy and query processes, and essential protocols like FTP, HTTP, ARP, and ICMP. Gain practical problem-solving skills through extensive practice questions and develop the theoretical foundation necessary to understand modern internet communications and network troubleshooting.
