What are two benefits of a star network topology?

A.	Disruption of the entire network is not required when adding new machines.
B.	Any problem which leaves the network inoperable can be traced to the central hub.
C.	This network type requires less cable as compared to linear bus topology.
D.	The performance of one of the numerous nodes cannot reflect on the performance of other nodes.
E.	The performance of the entire network is directly dependent on the performance of the hub.