Computer Network Protocols Explained: Types and Layers
About this lesson
Computer network protocols explained: what they are, how they layer, and why the HTTP/2 vs HTTP/3 shift happening in production right now makes the perfect real-world example. If you have ever wondered how two machines agree to talk before a single byte moves, the answer is a protocol. In this video you will learn what protocols are, how they organize into layers across the OSI and TCP/IP models, and the four key protocol types every developer and CS student needs to know: communication protocols like TCP and UDP, application protocols like HTTP and SMTP, the routing protocol IP, and security protocols like TLS. We anchor it all to a live example: as of Q1 2026, HTTP/2 still carries 51% of global page loads while HTTP/3, running on QUIC over UDP, holds around 21%, according to Cloudflare Radar data analyzed by technologychecker.io. Understanding why those two protocols make different transport-layer choices, and when each wins, is exactly what protocol literacy gets you. In this video: - What a protocol is and the three things every protocol defines - OSI model vs TCP/IP model: how layers divide the work - The four protocol types: communication, application, network, and security - TCP vs UDP: connection-oriented delivery vs connectionless speed - HTTP/2 vs HTTP/3 and QUIC: a real protocol-type shift playing out in production today Subscribe to Webronaq for clear, practical lessons on computer science, AI, and software engineering: https://www.youtube.com/@Webronaq #computernetworkprotocols #TCP #UDP #HTTP3 #QUIC
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