When cabling a rack, which of the following is BEST practice?

Rack-specific cabling hardware - including cable management arms, horizontal and vertical cable managers, structured patch panels, and hook-and-loop fasteners - keeps cables organized, maintains proper airflow to prevent overheating, reduces mechanical stress on connectors, and allows technicians to quickly identify and trace cables during troubleshooting or upgrades.

Loose, unmanaged cables behind servers obstruct rear airflow, increase the risk of accidental disconnection, and make cable identification and maintenance significantly more difficult.

Segregating power and network cables by physical lane can be useful but is not universally mandated as best practice, and still requires proper hardware to implement correctly.

Routing cables close to the front of the rack blocks front-panel access to equipment controls and ports, which is contrary to standard data center cable management practices.