Which two must already exist before creating a subnet? (Choose two.)

A.
storage virtual machine

B.
failover group

C.
broadcast domain

D.
IPspace

Explanation:
http://www.bradreese.com/how-to-subnet-a-network.pdf
The IPspace feature enables a single storage system to be accessed by clients from more
than one disconnected network, even if those clients are using the same IP address.
An IPspace defines a distinct IP address space in which vFiler units can participate. IP
addresses defined for an IPspace are applicable only within that IPspace. A distinct routing
table is maintained for each IPspace. No cross-IPspace traffic routing happens.
https://library.netapp.com/ecmdocs/ECMP1155585/html/GUID-4C8A392E-290E-4F9C-
91E8-EBF3E2047B06.html