Answer:
In a STAR TOPOLOGY network, each device on the network is attached to a central router. If the router fails, then the other devices will be unable to communicate, but if only one connected device fails, then all other devices will still be able to communicate.
Explanation:
In this type of topology all the computers are connected to a single router through a cable. This router is the central node and all others nodes are connected to the central node.
LAN - Local area network :P
Sadly this statement is true
Answer:
Best: 1 or 4
Worst: 3
Explanation:
I'm not sure if number one is imply to ask your coworker to explain it or actually help with the workload. I think 4 would be the right answer because that is what they are there for and you don't want to distract your coworkers.