TCP/IP Model
L1 - Data Link Layer: physical and data link layers from OSI; L2 - Internetwork Layer: network layer from OSI; L3 - Transport Layer: transport layer from OSI; L4 - Application Layer: session, presentation, application layers from OSI.
L1 - Data Link Layer: physical and data link layers from OSI; L2 - Internetwork Layer: network layer from OSI; L3 - Transport Layer: transport layer from OSI; L4 - Application Layer: session, presentation, application layers from OSI.