Which of the following is a characteristic of equipment racks?

Equipment racks are specifically designed to enhance the organization and efficiency of equipment management in data centers and telecommunications environments. One major characteristic of equipment racks is their ability to provide cooling and ventilation capabilities. This is essential because electronic equipment generates heat during operation, and maintaining an optimal temperature is crucial for reliable performance and longevity of the equipment. Equipment racks often include features like open designs, airflow management panels, or mounts for cooling fans, all aimed at improving air circulation and cooling.

The other options lack this core feature. For example, equipment racks may not be frequently moved as they are often stationary installations designed to hold equipment securely. They are versatile and can support a range of devices, not just high-voltage equipment, and they accommodate various types of cables beyond just optical fiber cabling. The design considerations of equipment racks center around optimal function and ease of access for maintenance, rather than frequency of movement or limitation to specific types of equipment.