Which two statements are true about initialization parameters for Clustered ASM instances? 

Answer options:

A. A change to ASM_DISKSTRING requires a restart of all ASM instances for the change to take effect.
B. ASM_POWER_LIMIT controls the number of RDBMS instances that can access a disk group while it is being rebalanced.
C. The ASM_DISKGROUP parameter is optional.
D. The default value of INSTANT_TYPE is ASM.
E. The maximum value of ASM_POWER_LIMIT is 1024.

CE

C: The default value of the ASM_DISKGROUPS parameter is a NULL string. If the parameter value is NULL or is not specified, then ASM does not mount any disk groups. E: The ASM_POWER_LIMIT initialization parameter specifies the default power for disk rebalancing in a disk group. The range of values is 0 to 1024. Incorrect Answers: B: The ASM_POWER_LIMIT initialization parameter specifies the default power for disk rebalancing in a disk group. The range of values is 0 to 1024. D: The default value of INSTANT_TYPE is RDBMS. Reference: https://docs.oracle.com/cd/E11882_01/server.112/e18951/asminst.htm#BHCEHJGA