OSI Model

The OSI model is a seven-layer model used to visualize computer networks. Each of the seven layers goes up in increments of one as it gets closer to the human layer (Application Layer). The bottom layer (Physical Layer) is where the network receives and transmits raw data.

The OSI model belongs to the International Organization for Standards (ISO) and is maintained by the Identification ISO/IEC 7498-1.

The seven layers are as follows:

• Application Layer
• Presentation Layer
• Session Layer
• Transport Layer
• Network Layer
• Data Link Layer
• Physical Layer