As a trade I am a software architect. It does happen that I have to design sites where the servers are located in different parts of the world.
Now an essential parameter to consider is latency: that is the time it takes between when a packet is sent from one server, and when it is received on the other side.
Of course, the packet might go through other systems etcetera. However, the hallmark of a good connection is low latency.
Question: what is the minimal latency that can be obtained over a coaxial wire (i.e. what is the maximum speed reachable by an electrical impulse over a coaxial wire)?
Question: what is the minimal latency that can be obtained over a fiber optic connection (if different from distance/c)?