What solution to choose for the development of a conceptual model for the development of a structured cabling system of an enterprise?

Question

Computer networks

Given: premises, as well as equipment intended for use at the enterprise:
cs424820.vk.me/v424820459/5d01/6uydF3BTfow.jpg
- A and B - for the office of the director and secretary;
- S - server room equipment (server rack and PBX);
- 1, 2, 3 - for departments no. 1, 2, 3 respectively.
It is necessary: ​​to offer the optimal solution for the placement of equipment and the construction of a structured cabling system, as well as the development of a LAN based on it.

Answer 1

Take already some kind of Visio and draw a logical network map in it - Internet channels, switches, routers, a demilitarized zone with external services for a mailer, internal routers, vlans, switches, local network - printers, wifi points, workstations.
in general, read about network planning or contact companies that are professionally involved in SCS, they will offer you the best option