Which of the following is true about power distribution units (PDUs)?

Power distribution units (PDUs) serve a crucial role in managing power within data centers and other facilities. The statement that PDUs can act as a single point of failure if configured incorrectly is accurate. This is due to the central role PDUs play in distributing electrical power to various devices and systems. If a PDU has a design flaw, lacks redundancy, or is misconfigured, it can lead to a total loss of power to all devices connected to it. This scenario underscores the importance of careful planning and implementation during the installation and management of PDUs, as improper configuration can jeopardize the reliability and availability of electrical power.

The other statements about PDUs reflect limitations and specific usages that are not universally applicable. While some PDUs can be utilized with isolation transformers, it is not a requirement. Additionally, PDUs can work with multiple types of systems, not just single UPS buses. The option regarding dual corded rack equipment also does not reflect the flexibility and design of modern PDUs that support multi-cord configurations for enhanced redundancy and power distribution.