Which description matches a blade chassis?

• A. A backplane that routes PCIe lanes for density.
• B. A microprocessor module for compute.
• C. A cable management arm for rails.
• D. Enclosure housing multiple blade servers sharing power/cooling and sometimes networking.

Answer: (D)

A blade chassis is an enclosure that houses multiple blade servers in one frame and provides shared power, cooling, and often networking. This setup lets many compute blades run densely because the chassis supplies the common power and cooling and includes a backplane that links each blade to the network fabric and I/O. So the description that matches is an enclosure housing multiple blade servers sharing power/cooling and sometimes networking.

The other options describe parts or accessories rather than the whole enclosure: a backplane routing PCIe lanes is an internal component, not the chassis itself; a microprocessor module is a single blade, not the enclosure; a cable management arm is an accessory, not the enclosure that holds multiple blades.