單項(xiàng)選擇題

Which command can a system administrator use to verify that a tape is in backup format and is readable by the system？（）

A.tar
B.tctl
C.tcopy
D.restore

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單項(xiàng)選擇題

In which directory are the basic Linux commands such as gzip， gunzip and zcat installed？（）

A./opt/freeware/bin
B./usr/bin/freeware
C./var/freeware/bin
D./usr/sbin/freeware

單項(xiàng)選擇題

A system 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？（）

A.savevg -mf /dev/rmt0 appvg
B.savevg -cvf /dev/rmt0 appvg
C.savevg -xvf /dev/rmt0 appvg
D.savevg -f /dev/rmt0 -V appvg