For instance, there is more than likely some duplication of names or addresses of nodes within the connected LANs.
Also, the LANs may be connected via special internetworking devices, one of which is called a “router.” These internetworking devices can form some relatively complex patterns.
(Note: The special internetworking devices will be addressed in more detail later in this Unit in Lesson 5: When LANs Get Bigger and Bolder.)