OSI Model Reference Model to informa about it

OSI Model

1. Application Presentation Session Transport Network Data Link Physical User interaction layer
HTTP, DNS, FTP, Telnet Syntax layer Encryption & decryption (SSL) Segmentation TCP/UDP Packets Routers, ICMP, IP addresses Ethernet Frames MAC, NIC, switches Data bits Cables, hubs, repeaters The 7 Layers of the Open Systems Interconnection (OSI) Model The OSI model helps us understand the flow of traffic across a network Starts at physical layer and ends at the application layer Mnemonic to remember: A ll P eople S eem t o N eed D ata P rocessing Connection Establishes & terminates