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Question ID 4420

The following ZFS file system is available on your system:
NAME USED AVAIL REFER MOUNTPOINT files 82K 72.8G 24.5K /data
You want to temporarily unmount the /data file system.
Which set of commands will unmount the /data file system so that it is not available to users and then mount the system when you are ready to make it available again?
 

Option A

A. umount /data -to unmount the file system; mount /data to mount the file system
 

Option B

B.    zfs unmount /data -to unmount the file system; zfs mount -a to mount the file system
 

Option C

C.    zfs umount /data -to unmount the file system; zfs mount /data to mount the file system
 

Option D

D.    zfs unmount /data -to unmount the file system; zfs mount /data to mount the file system
 

Correct Answer B
Explanation


Question ID 4421

You want to backup an active ZFS file system named dbase. When listing the information on the file system, the following information is displayed:
NAME USED AVAIL REFER MOUNTPOINT data/dbase 24.5K 72.8G 24.5K /data/dbase
Rather than unmount the file system and make it unavailable during the backup, you want to create a point in time snapshot of the file system and backup that snapshot.
Which command is used to create a point in time snapshot of the dbase file system?
 

Option A

A.    zfs snapshot files/data data_snapshot
 

Option B

B.    zfs snapshot data/dbase@ dbase_snapshot
 

Option C

C.    zfs clone data/dbase data/sdbase/dbase_snapshot
 

Option D

D.    fssnap -F ufs -o bs=/var/tmp /data/dbase /dev/fssnap/0 /data to mount the file system.
 

Option E

E.    zfs unmount /data -to unmount the file system; zfs mount /data to mount the file system.
 

Correct Answer B
Explanation

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