单项选择题
A.Install patches on non critical servers
B.Install patches in test environment
C.Install patches on a PC
D.Install patches on critical servers
单项选择题 Auserreportsthattheyareunabletoreachaparticularwebsite.Theuserhadnoissuesreaching thesiteearlierintheday.WhichofthefollowingistheMOSTlikelycauseofthelackofaccess？（）
单项选择题 Users report that they are unable to connect to a server. An administrator confirms that it is unreachable across the network. Other administrators have been working in the server room throughout the day. Which of the following is the NEXT step the administrator should take？（）
单项选择题 Auserreportsthattheyareunabletoprinttoaremoteprinter.Whichofthefollowingshouldthe techniciancheckFIRST？（）