A technician is installing a new system in a facility that requires zero downtime. The facility uses a backup generator in case of power loss.
Into which of the following power sources should the technician plug the system to offer optimal uptime?
A . Only a surge protector is needed due to the backup generator
B . Plug directly into the emergency power source
C . Plug a surge protector directly into the UPS
D . Connect to a UPS that utilizes the emergency power source
Answer: D