单项选择题
A. The update was done incorrectly and now the server needs to be restarted.
B. The update has discovered viruses on the server and removed those virus files.
C. The update requires a reboot for the files to process correctly.
D. The update has quarantined files that are false positives.
单项选择题 An administrator receives a call from a user who is unable to receive email. After troubleshooting the administrator is able to resolve the issue and verify that user is able to access email again. Which of the following is the NEXT step that the administrator should take？（）
单项选择题 An environment has a DC server and an Exchange server. The administrator needs to install a patch and restart both servers while minimizing downtime. Which of the following is the BEST way to restart the servers?（）
单项选择题 An administrator receives a call from a user who is unable to receive email. After checking the workstation and email settings the administrator is still not able to determine the problem. Which of thefollowing is the NEXT step that the administrator should take？ （）