When designing a campus distribution system involving small buildings with only one horizontal cross-connect (HC) [Floor distributor (FD)] per building, you can eliminate the need for a(n):

TIA-568 and ISO 11801 permit the elimination of the intermediate cross-connect (IC) - called the building distributor (BD) in ISO terminology - when a building contains only a single horizontal cross-connect (floor distributor). In this scenario, the HC/FD connects directly to the main cross-connect (MC) or campus distributor (CD), simplifying the cabling hierarchy without violating standards requirements.

The main cross-connect (MC) or campus distributor (CD) is the top-level aggregation point for the campus backbone and cannot be eliminated; it is required to interconnect all buildings in the campus distribution system.

The horizontal cross-connect (HC) or floor distributor (FD) is the central premise of this scenario - the building has exactly one - and it cannot be eliminated because it serves as the termination point for horizontal cabling to work areas.

The entrance facility (EF) is required wherever outside plant cables enter a building and cannot be removed from a campus distribution design regardless of building size.

A latching connector (LC) is a fiber optic connector type (small form factor), not a hierarchical cross-connect level in the structured cabling topology, making it irrelevant to this design decision.