单项选择题
A. Follow the pre-installation plan and procedures.
B. Review the system logs to check for errors.
C. Notify all users that the old system will be taken offline.
D. Apply all security updates to the system.
单项选择题 Atapedrivecontainingajammedtapemustbetakenoff-sitetoberepaired.Whichofthefollowing shouldbeconsideredFIRST？（）
单项选择题 WhichofthefollowingchassistypesmakestheBESTuseofspaceforperformance？（）
单项选择题 A server has been assigned the 192.168.100.127/25 IP address. The server is experiencing strange network connectivity related problems. Which of the following would BEST describe the problem?（）