A technician is wiring up a new rack. Which of the following is the appropriate place for the power cord to wire this rack correctly?

Servers with dual power supplies should have each PSU cabled to a different PDU so that a single PDU failure does not interrupt power to the server. This is the foundational rack-level redundancy practice ensuring the alternate power path keeps the server running when one PDU loses power or is serviced.

Plugging each PDU into a separate UPS addresses upstream redundancy but does not describe how server power cords should be distributed across PDUs at the rack level, which is what the question asks.

Connecting each UPS to a different circuit is sound electrical infrastructure planning but pertains to the facility layer, not to the physical power cord routing within the rack itself.

PDUs exist specifically to distribute power to many devices in a rack; restricting all wall connections to UPS units only describes one layer of the overall design and does not address how server power cords should be wired.