What term describes wiring that runs inside a building?

• A. In-building
• B. Internal
• C. Premises
• D. Indoor

Answer: (C)

The term used for cabling that runs inside a building and within the property boundaries is premises cabling. This designation distinguishes wiring that resides inside the building (and on the property) from outside plant, which is the cabling outside the building or on the site boundary. Premises wiring includes the paths inside walls, floors, and equipment rooms up to where the network equipment is located. The other terms are less precise for formal classifications: “in-building” is descriptive but not the standard label, “internal” is vague, and “indoor” is too broad and not the established term in this context.