The root admin on the UNIX box receives an “Access Denied” message when he attempts to
access a newly mounted qtree. What’s the most likely cause of this error?

A.
The qtree is missing from the /etc/hosts file.

B.
NFS is turned off on the storage system.

C.
The qtree is set to ntfs security style.

D.
The qtree has not been exported.

Explanation:
http://hd.kvsconsulting.us/netappdoc/801docs/html/ontap/smg/GUID-866DD79D-D2A6-4FBAB0BDA63560FECEFF.html
https://library.netapp.com/ecmdocs/ECMP1196891/html/GUID-F6304830-B124-40A5-95D6-C646AA85E9E0.html
Only hostnames and IPs are referenced in /etc/hosts, so A is incorrect. Thequestionstates that the
qtree wasmounted, 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.