They are token ring and Ethernet. Topology refers to the way the computers in the network are connected together. Most Ethernet networks follow the IEEE 802.3 standard. In the star configuration, each computer node is connected via the cable to the hub or switch, which acts as the data transfer agent. In this configuration, all the computers are equal as to capability and can share resources such as printing and file storage.
Clients do the work and the server acts as the file and resource provider.
Servers handle file storage, printing, communication, and application service among other functions. Servers usually have high performance CPUs, large RAM memory and HDD storage capacity. This configuration lends itself to the office environment, where several users may work on the same data files. The data is stored on the server, making it available to all who have need to use the data. Putting the components together comprises two distinct areas.