单项选择题
A. Restart both servers at the same time so the servers are down at the same time.
B. DC server first, then the Exchange server second.
C. The order in which the servers are restarted does not matter.
D. Exchange server first, then the DC server second.
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？ （）
单项选择题 When disposing of computer equipment, which of the following can present an environmental hazard?（）
单项选择题 A server has five hot pluggable SCSI disk drives in a RAID 5 array. The server OS crashed and the server will not boot. The administrator noticed that all of the disk drives have gone offline.Which of the following components would MOST likely have caused the problem?（）