单项选择题
A.PCI slots available
B.Scalability and flexibility
C.Number of analog modems provided
D.Number of video conference devices connected
单项选择题 According to best practices, which of the following should be the FIRST step after a full boot into a newly installed Windows Server OS?（）
单项选择题 WhichofthefollowingiseliminatedwhenusingSATAinsteadofPATAtechnology？（）
单项选择题 Whichofthefollowingwouldrestricttrafficfromaspecifichosttoanetwork？（）