feature of the private network from shared or public networks is its isolation
from any other network.
consequences of such isolation are as follows:
§ Independent choice of network technologies- The possibilities are limited only
by the choice if vendor or manufacturer.
§ Independent addressing system- In private networks, it is possible to choose any address.
§ Predictable performance- Owning communication links guarantees the predefined
bandwidth between end nodes of the company or communications devices.
§ Maximum security- A lack of connections to the external world considerably reduces the
possibility of eavesdropping on the traffic along its path