| A | B |
|---|
| Application Layer | Layer closest to user |
| Physical Layer | Wires, connectors, data rates |
| Data Link Layer | Flow control, error notification |
| Network Layer | Network address and best path |
| Transport Layer | Establishes, maintains, terminates virtual circuits |
| Session Layer | Class of service |
| Top Down Description of OSI Model | All People Seem To Need Data Processing |
| Bottom Up Description of OSI Model | Please Do Not Throw Sausage Pizza Away |
| Application to Physical Layer Encapsulation Process | Data, Segments, Packets, Frames, Bits |
| Physical to Application Layer Encapsuation Process | Bits, Frames, Packets, Segments, Data |
| PDU | Protocol Data Unit |
| Encapsulation | Wrapping data in a protocal header before network transit |
| Datagrams | Another name for network-layer packets |
| Data or Data Packets | Information that is sent on a network |
| OSI | Open System Interconnection |
| Protocol | Formal description of a set of rules and conventions |
| Networking | Interconnection of workstations, peripherals, and other devices |
| ISO | International Organization for Standardization |
| Media Layers (Layers 1-3 of OSI Model) | Control physical delivery of messages over the network |
| Host Layers (Layers 4-7 of OSI Model) | Provide for the accurate delivery of data between computers on the network |
