What is color coding used for in a data center?

• A. A design for network routing.
• B. A protocol for label printing.
• C. A visual scheme (e.g., SMF yellow, MMF aqua) to reduce mistakes and speed identification.
• D. A method to color-code power cables only.

Answer: (C)

Color coding is a visual scheme used to quickly identify cables and components, which helps reduce mistakes and speed up recognition during installation, troubleshooting, and maintenance. In a data center with many cables and connections, assigning specific colors to different functions or types—for example, using yellow for certain fiber paths and aqua for others—lets technicians know at a glance what each cable represents, where it runs, and what equipment it connects to. This standardization supports faster work, easier auditing, and fewer errors when adding, replacing, or tracing cables. It’s broader than just power cables and isn’t about routing design or printing protocols; it’s about using color as a quick, universal cue to keep the infrastructure organized and safer to operate.