| A | B |
| Segment | The bus cable |
| Broadband | Multiplexing capabilities |
| Promiscuous Mode | NIC processes all the frames it sees on the cable |
| Transceiver | A device that tranmits and receives signals on the cable |
| Terminator | The type of connector used to connect devices |
| Baseband | One signal at a time |
| BNC Connector | Type of connector used on thinnet |
| FCS | a/k/a CRC |
| Collision Domain | A set of Ethernet segments that receives all traffic geeneated by any node with those segments |
| Repeater | A device that takes all data frames it receives and retrainsmits to another segment |
| Bridge | A layer two device |
| Short Circuit | Allows electricity to pass between the center wire and the shield |
| Amplifier | boosts signals including flaws |
| AUI | The connection needed with 10Base5 |
| T-Connector | is required to connect a PC to a Thinnet network |
| MAC address | unique to each individual NIC |
| PAD | Used when extra "filler" data is needed in a packet |
| Frame | A/K/A packet |
| Promiscuous Mode | A NIC that is listineing for all pckets sent along the wire |
| Preamble | The first item in a data packet |