单项选择题
A. Easier to secure
B. Ability to run remote application
C. Ease of configuration
D. Fault tolerance
单项选择题 Multiple expansion cards are installed in a rack mount 1U server. All expansion cards stop working simultaneously. Which of the following is the MOST likely cause of the problem?（）
单项选择题 AnadministratorhasjustfinishedphysicallyreplacingthesystemboardinaWindowsdomain controller.WhichofthefollowingmustbedonebeforebootingtheserverbackintoWindows？（）
单项选择题 Whichofthefollowingtechnologieswascreatedtoreducecost，increasecablelength，anduses3.3v acrosstheline？（）