In which OSI layer do you find protocols like TCP and UDP?

The correct answer is the Transport Layer, which is Layer 4 of the OSI model. This layer is crucial for facilitating communication between devices over a network. It is responsible for providing end-to-end communication services, ensuring that data is transmitted accurately and in the correct sequence.

Protocols like TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) operate at this layer since they manage the data flow and facilitate the transfer of data segments from the source to the destination. TCP is connection-oriented, providing reliable data transmission through error checking and flow control, while UDP is connectionless and allows faster transmissions by not ensuring reliability or ordering of packets.

Understanding the role of the Transport Layer helps clarify how these protocols enhance network communication, making it an essential aspect of networking concepts included in the Extron AV Associate Certification.