CompTIA Server+ (SK0-005) Practice Exam

A server that frequently goes offline after a power outage is most likely experiencing issues with its power supply. A faulty power supply may not provide stable or adequate power to the server, particularly when it is trying to recover from a power interruption. After a power outage, if the power supply cannot effectively restart the server or manage the power load, the server may frequently go offline.

While operating system updates are important for performance and security, they do not directly relate to server outages following power failures. Similarly, while a failing hard drive can cause system instability, it typically would not be triggered specifically by power outages. The time synchronization service, while crucial for maintaining accurate time across servers, does not contribute to a server going offline after power interruptions.

In this scenario, the primary factor leading to the server's inability to maintain uptime post-power outage is the reliability of the power supply.