| A | B |
|---|
| Protocol | A set or rules used by computers to communicate with other devices |
| Header | Section of a packet that precedes the data; contains source & destination addresses; port #s |
| Signal | Electric current that carries data from one place to another |
| Baseband Transmission | Digital communications in which only 1 signal may be present on a wire at a time |
| Asynchronous | Signal between a sender & a receiver occur on different clocks |
| Network Interface Card | Hardware in form of expansion card; allows computer to connect to network |
| Phase | Stae of a wave measured by its relationship to another wave |
| Internetwork | Two or more networks conncected by a device capable of recognizing multiple segments |
| Interoperability | ability of an OS to talk to OS from other vendors |
| Voltage | Potential difference in charge between two entities in an electrical field |
| Broadband Transmission | Digital communication signal in which multiple signals can be transmitted on a cable at the same time |
| Data Frames | Units into which data link layer breaks down data for transmission |
| Amplitude | Magnitude of voltage; strength of signal |
| Routing | Moving a packet from source to destination |
| Proprietary | Product or methodology owned exclusively by a single company |
| PDU | Packet of data units sent between peer layers in a specific protocol; carries control information |
| Encoding Scheme | Means of building a signal for transmission to efficiently move data across network(s) |
| Synchronous | When two entities are coordinated in a time field |
| Packet | One segment of a message prepared for network transmission |
| Frequency | Time it takes a wave to go from high to low to high again |
