Which two Operating System users and groups must be cre…

Which two Operating System users and groups must be created on each node before installing Oracle GridInfrastructure 12c?

A.
an O/S user to own the Clusterware installation and a different O/S user to own the Automatic Storage
Management (ASM) installation

B.
an O/S group to own the software inventory

C.
an O/S user to own the Oracle Database installation

D.
an O/S group called dba

E.
a group to own the ASMLIB-provisioned storage

F.
a group to own Automatic-Storage Management (ASM) Filter Driver-provisioned storage

Explanation:
B: Creating the Oracle Inventory Group If an Oracle Inventory Does Not Exist
If the oraInst.loc file does not exist, then create the Oracle Inventory group by entering a command similar to
the following:
# /usr/sbin/groupadd -g 54321 oinstall
The preceding command creates the oraInventory group oinstall, with the group ID number 54321. Members of
the oraInventory group are granted privileges to write to the Oracle central inventory (oraInventory), and other
system privileges for Oracle installation owner users.
D: Oracle recommends that you create one software owner to own each Oracle software product (typically,
oracle, for the database software owner user, and grid for Oracle Grid Infrastructure).
Incorrect Answers:
A: During an Oracle Grid Infrastructure installation, both Oracle Clusterware and Oracle Automatic Storage
Management (Oracle ASM) are installed. You no longer can have separate Oracle Clusterware installation
owners and Oracle ASM installation owners.
https://docs.oracle.com/database/121/CWLIN/usrgrps.htm#CWLIN179