单项选择题
A.Full backups every month， daily incremental backups
B.Full backups every month， daily differential backups
C.Full backup Saturday night， incremental backups the rest of the week
D.Full backup Saturday night， differential backups the rest of the week
单项选择题 A System p administrator would like to verify the user definitions in the /etc/passwd file. Which of the following commands will accomplish this（）
单项选择题 A System p administrator has an application that has the data in volume group appvg. Which of the following commands will back up the contents of appvg to the tape in /dev/rmt0 and check for any read errors （）
单项选择题 Whichofthefollowingcommandswouldasystemadministratorusetoautomatemonitoringandnotificationoffillingfilesystems（）