NS0-155 Exam Dumps : Data ONTAP 7-Mode Administrator

Using the -p option may reduce the extra storage requirements in a flexible volume when reallocation is run on a volume with snapshots. It may also reduce the amount of data that needs to be transmitted by SnapMirror on its next update after reallocation is performed on a SnapMirror source volume.

vol options nosnapdir [on|off]

If this option is on, it disables the visible .snapshot directory that is normally present at client mount points, and turns off access to all other .snapshot directories in the volume. The default setting is off.

Only hostnames and IPs are referenced in /etc/hosts, so A is incorrect. The question states that the qtree was mounted, and B and D would preclude this so they are incorrect.

You need to set a qtree to mixed or unix security style to support UNIX users.