单选题An administrator has a malfunctioning uninterruptible power supply (UPS). Which of the following is the MOST likely cause of the problem?()ABattery needs to be replacedBLight switch is turned offCSmart cable is disconnectedDUPS needs a firmware update
题目
单选题
An administrator has a malfunctioning uninterruptible power supply (UPS). Which of the following is the MOST likely cause of the problem?()