Hi, thank you for contacting JustAnswer.com. My name is Russell. I will do my best to provide the right answer to your question.
I suspect that your question is not completely stated, for it ends in mid-sentence.
Also you have not stated how many computers are both
- to-be-installed in the future plan
The figures in ( parentheses, like this ), might be one or the other.
Also, your question ends in mid-sentence, like this: What type of cabling will need to be
But from what little is stated, if the building is L-shaped, it most likely will need a bus topology, with the server at one end of the 'L', and the bus stretching from one end of the 'L' to the other.
Cabling? probably 10-Base-T these days. But that might depend upon the rest of your question, that has not been fully stated.