OSI/TCP/IP Model Layer by Layer - CCNA
In this video, I explain in detail the function of each layer of the OSI and TCP/IP models. This way, you'll be more than prepared for your CCNA exam.
The Open Systems Interconnection (OSI) model is a seven-layer model for the process of data communication between computer systems.
The TCP/IP protocol suite is a set of protocols used for data transmission across computer networks.