In this video, you’ll learn about two key protocols that work at different layers of networking: UDP (User Datagram Protocol) and ICMP (Internet Control Message Protocol). The lesson explains how UDP is a connectionless and lightweight protocol used for fast communication where speed is more important than reliability, such as in video streaming, online gaming, DNS, and VoIP.

You’ll also explore ICMP, a protocol mainly used for error reporting and network diagnostics. ICMP helps devices communicate issues like unreachable hosts or network congestion and is commonly used by tools such as ping and traceroute to test connectivity.

By the end of this video, you will understand how UDP enables quick, real-time communication without guarantees of delivery, while ICMP provides feedback about network conditions, making both protocols essential for troubleshooting and efficient data transfer in IP networks.