A computer network with a star network topology, in its simplest form, consists of one central, or hub computer which acts as a router to transmit messages

Comparing star networks to other types of network

Advantages

• Easy to implement and extend, even in large networks
• Well suited for temporary networks (quick setup)

Disadvantages

• Limited cable length and number of stations
• Maintenance costs may be higher in the long run
• Performance degrades as additional computers are added
• Failure of the central node can disable the entire network.