Which statement best describes the role of backbone copper cabling between telecommunications rooms?

• A. To interconnect distribution points and support longer-distance connections
• B. To connect workstations
• C. To carry only power
• D. To replace fiber

Answer: (B)

The key idea is that backbone cabling is meant to link major network points across spaces or floors, not to serve end-user devices directly. Backbone copper cabling between telecommunications rooms provides a pathway to connect distribution points and equipment rooms, enabling data to travel over longer distances within a building. It’s not used to connect workstations directly—that role belongs to the horizontal cabling from the telecommunications room to the user outlets and, ultimately, to a switch or device at the work area. While PoE can ride on copper, the primary purpose of backbone cabling isn’t power delivery. And it isn’t intended to replace fiber, since fiber handles higher bandwidth and longer distances more effectively.