单项选择题
A.Eliminates the need for backup tapes
B.Increases redundancy
C.Saves physical space in the racks
D.Offers additional runtime for the UPS
单项选择题 Whilereviewingthebackuplogsaserveradministratornoticesthatabackupjobforanapplication serveronthesamesubnethasfailed.WhichofthefollowingisMOSTlikelytheproblem？（）
单项选择题 Which of the following is the MOST important factor when considering environmental factors?（）
单项选择题 WhichofthefollowingofferstheMOSTredundancyforasystembutisalsoverycostly？（）