Which activity is audited by default and recorded in the operating system audit trail irrespective of whether or not database auditing is enabled?
A.
configuration of unified auditing mode
B.
execution of SQL statements by users connected with the SYSDBA privilege
C.
usage of the AUDIT statement
D.
creation of a fine grained audit policy
B
B
Actions Audited by Default
Regardless of whether database auditing is enabled, Oracle Database always audits certain database-related operations and writes them to the operating system audit file. This fact is called mandatory auditing, and it includes the following operations:
Connections to the instance with administrator privileges
An audit record is generated that lists the operating system user connecting to Oracle Database as SYSOPER or SYSDBA. This provides for accountability of users with administrative privileges. Full auditing for these users can be enabled as explained in “Auditing Administrative Users”.
https://docs.oracle.com/cd/B19306_01/network.102/b14266/cfgaudit.htm#i1007559
B