A critical server runs Windows Server 2016. You need to protect the computer against unexpected shutdown due to sudden line power loss. Which device should you use?

An uninterruptible power supply (UPS) provides temporary battery backup power when the main power source fails, allowing the server to continue operating during brief outages or to perform a graceful shutdown to prevent data loss or system corruption.

A power supply unit (PSU) is an internal component that converts AC to DC power for the server's internal components and does not provide protection against external line power loss.

A hot-swappable power supply provides redundancy against a PSU failure within the server but offers no protection against the external loss of line power.

A line conditioner stabilizes the quality of electrical power by smoothing out fluctuations but does not provide backup power during a complete loss of line power.

A dedicated surge protector shields the server from damaging voltage spikes and transient overvoltages that can occur during power fluctuations, outages, or upon power restoration, thereby preventing hardware damage and unexpected shutdowns caused by these electrical events.