Final answer:
The correct answer is C. Wiring closet. Wiring closets are centralized locations for network wiring and components like patch panels and switches, enabling network links between floors.
Step-by-step explanation:
The infrastructure component that is often located in the same position across multiple floors to provide a convenient means of linking floor-based networks together is a wiring closet. Wiring closets are centralized locations on each floor where all of the network and communication wiring for that floor is terminated. These closets typically house patch panels, switches, and routers that interconnect the network resources on the floor with the backbone of the entire building's network. The proximity of wiring closets in the same position across different floors facilitates vertical cable runs through conduits or risers, making it simpler to manage and connect networks between floors.