TCP vs UDP | Wireshark Demo | TCP/IP Model

TCP vs UDP Explained | Complete Guide + Wireshark Demo | Transport Layer (TCP/IP Model) Have you ever wondered why file downloads never miss data while online games can continue even if some packets are lost? In this video, we'll explore the two most important transport layer protocols: TCP (Transmission Control Protocol) and UDP (User Datagram Protocol). You'll learn how they work, their key differences, where each protocol is used, and why modern applications choose one over the other. To make the concepts easier to understand, we'll also capture and analyze real network traffic using Wireshark, including the TCP Three-Way Handshake, TCP and UDP headers, and live packet captures. Whether you're a Computer Science student, CCNA learner, cybersecurity enthusiast, or preparing for networking interviews, this video will help you build a solid understanding of TCP and UDP from both theoretical and practical perspectives. ⏱️ TIMESTAMPS 00:00 - Intro 00:50 - TCP 02:45 - TCP Header 04:24 - TCP Three-Way Handshake 06:05 - UDP 07:52 - UDP Header 09:20 - Wireshark Demo 15:09 - Outro 📚 Topics Covered • TCP Explained • UDP Explained • TCP vs UDP • TCP Header • UDP Header • Three-Way Handshake • Sequence Number & Acknowledgement • TCP Flags (SYN, ACK, FIN) • Flow Control • DNS over UDP • HTTP over TCP • Wireshark Packet Analysis • Transport Layer • TCP/IP Model 💻 Commands Used echo "Hello TCP!" index.html python3 -m http.server 8080 sudo wireshark http://127.0.0.1:8080 nslookup google.com 🎥 Previous Video: Port Numbers Explained | Nmap & Wireshark Demo    / @yourchannel   👍 If you enjoyed this video, don't forget to: ✔ Like the video ✔ Subscribe for more Networking & Cybersecurity content ✔ Turn on the notification bell 🔔 ✔ Share this video with your friends #TCP #UDP #Wireshark #Networking #TransportLayer #TCPIP #CCNA #CyberSecurity #NetworkSecurity #PacketAnalysis #ThreeWayHandshake #DNS #HTTP #NetworkProtocols #ComputerNetworking #Nmap #EthicalHacking #NetworkEngineer #TechTutorial #Programming