コンピュータの日付と時刻を手動で変更したにもかかわらず、コンピュータの電源を一定時間オフにすると、変更が常に元に戻ってしまうという報告がユーザーからありました。技術者が最初に検討すべきことは次のどれですか?
正解:B
The CMOS battery powers the real-time clock (RTC) on the motherboard, which maintains the date and time when the computer is turned off. If the battery fails, the system will lose date and time settings, reverting to defaults on restart.
* Why Not A (OS updates): While OS updates can sometimes cause time issues, they don't typically affect changes persisting after shutdown.
* Why Not C (NTP server): An incorrect NTP server setting would cause the system to synchronize incorrectly, but this issue relates to time resetting during power-off.
* Why Not D (RAM): RAM is volatile memory and unrelated to storing persistent time settings.
CompTIA A+ Exam Reference: Core 1 (220-1101), Section 3.4, motherboard troubleshooting.