| A | B |
| Bus | a network that requires that all computers, or nodes , connect to the same cable. When the computer sends data, that data is broadcast to all nodes on the network. |
| Star | In this network, nodes are connect through a central device usually a hub or a switch. |
| Ring | In this network, a cable connects one node to another until a ring is formed. If a computer is not the destination node, it will pass the message to the next node until it reaches the destination. |
| Hybrid | large network that combines bus, star, and ring topologies. Two examples include the star ring and star bus network. |
| Mesh | connects devices with multiple paths so that redundancies exist. |
| Voice Over IP (VoIP) | the use of a data network to deliver voice information, instead of the traditional circuit switched lines of the PSTN. Allows the use of the Internet for real time voice and video traffic. |
| Presencing | allows devices to automatically track and report your locationand availibility. For example, when user signs in to a instant messaging service, his status is advertised to the people on the contacts list. |
| Network | two or more computers connected so that they can share data by way of transport medium that allows users to share data quickly. |