| A | B |
| NIC | NETWORK INTERFACE CARD, printed circuit board that provides network communication capabilities to and from a personal computer. |
| RING | Connection of two or more stations in a logically circular topology. Information is passed sequentially between active stations. Token Ring, FDDI, and CDDI are based on this topology. |
| MESH | Network topology in which devices are organized in a manageable, segmented manner with many, often redundant, interconnections strategically placed between network nodes |
| STAR | connects cables to central point of concentration. |
| EXTENDED STAR | comes from star,links individual stars together by linking the hubs/switches. |
| BUS | connects all hosts with single backbone segment. |
| HIERARCHICAL | similar to an extended star,the system is linked to a computer that controls the traffic on the topology. |
| LOGICAL-TOKEN | How the hosts communicate across the medium. |
| LOG-BROADCAST | Each host sends it's data to all other hosts on the network medium. |
| REPEATER | Regnerates and retimes network signals, and is in the layer one(phsical). |
| HUBS | Muti-part repeater(more then one signal), is located in the phsical layer. |
| MEDIA | Located in layer one (physical), media is the material through which data packets travel. |
| SWITCH | layer 2 device(datalink),multi-port repeater that make decisions based on MAC addressesThey do this by "switching" data only out the port to which the proper host is connected. , |
| ROUTER | layer 3(network),make decisions based on groups of network addresses (Classes) ,connect different layer 2 technologies, such as Ethernet, Token-ring, and FDDI. |
| BRIDGE | layer 2 device designed to connect two LAN segments. The purpose of a bridge is to filter traffic on a LAN, to keep local traffic local, yet allow connectivity to other parts (segments) of the LAN for traffic that has been directed there. |
| CLOUD | Internet,reminds you that you an connect to many things. |