An administrator needs to run five CAT6 cable runs to a new server. Which of the following steps should the administrator do FIRST?

Installing cables into trays is a routing step that occurs after labeling, not before, since unlabeled cables become nearly impossible to trace once installed.

Verifying bend radius is an important physical handling consideration during routing, but it is not the very first step before labeling and installation begins.

Bundling cables with velcro or zip ties is a final cable management step performed after cables are run and labeled, not before.

Labeling both ends of each cable with unique identifiers must be done first because once cables are routed through trays, conduits, or bundled together, identifying individual runs becomes extremely difficult or impossible without prior labeling. This step prevents costly re-work and supports future troubleshooting and documentation.