A blade server chassis has two power supplies. Which of the following is a benefit of a technician connecting each power supply to a separate UPS unit?

Quality of service refers to network traffic prioritization mechanisms such as DSCP marking and queuing policies, which are unrelated to power supply redundancy.

Fault tolerance is the ability of a system to continue operating normally when one component fails. By connecting each of the blade chassis's two power supplies to a different UPS unit, a failure of one UPS or a power interruption on one utility circuit does not cut power to the server, because the second supply continues receiving power through its own independent UPS path.

Traffic shaping is a network technique used to control bandwidth consumption and data flow rates and has no relevance to power infrastructure design.

Load balancing distributes workloads across multiple resources to optimize utilization - while dual power supplies do share load, the primary benefit of connecting them to separate UPS units is redundancy against a single point of failure, not balanced distribution.