Which two statements are true concerning ASM diskgroups…

Which two statements are true concerning ASM diskgroups using disks with a 4k sector size?

A.
Their COMPATIBLE.ASM attributes must be set to 12.1 or higher.

B.
Their COMPATIBLE.ASM attributes must be set to 11.2 or higher.

C.
Performance of ACFS is improved by using these diskgroups.

D.
Their COMPATIBLE.RDBMS attributes must beset to 11.2 or higher.

E.
Their sector size attributes can be changed using the ALTER DISKGROUP command.

Explanation:
The values for SECTOR_SIZE can be set to 512, 4096, or 4K if the disks support those values. The default
value is platform dependent. The COMPATIBLE.ASM and COMPATIBLE.RDBMS disk group attributes must
be set to 11.2 or higher to set the sector size to a value other than the default value.
Incorrect Answers:
C: Oracle ASM provides support for 4 KB sector disk drives without negatively affecting performance.
https://docs.oracle.com/database/121/OSTMG/GUID-8B656725-D347-4166-8775-
1070B6C4D580.htm#OSTMG10203