As part of your Oracle Database 12c post-installation tasks, you run these commands:
Cd $ORACLE_HOME/bin
srvctl stop database -d myDb
chopt enable dm
srvctl start database -d myDb
What does this do?

• A. It configures Oracle Messaging Gateway.
• B. It enables the Oracle Data Mining option in your Oracle binary files.
• C. It generates Client Static Library.
• D. It configures Oracle Net Services.
• E. It creates the Fast Recovery Area disk group.
• F. It configures one of the Oracle user accounts.

Examine the commands:
SQL> CONNECT sys@CDBl AS SYSDBA
$QL>STARTUP MOUNT
SQL> ALTER DATABASE cdbl MOUNT;
Which four options represent what happens when these commands are executed?

• A. The PDBs are mounted.
• B. The PDBs are mounted, and the seed is opened in READ ONLY mode.
• C. The CDB control files are opened for the instance.
• D. The PDBs are mounted, and opened in READ WRITE mode, while the seed is opened In READ ONLY mode.
• E. The root is mounted.
• F. The instance is started.
• G. The root is opened.

Which two statements about the Process Monitor (PMON) process are true?

• A. PMON performs process recovery when a client process fails.
• B. During instance startup, PMON takes care of instance recovery.
• C. PMON performs listener registration.
• D. PMON resolves failures of distributed transactions.
• E. PMON restarts background and dispatcher processes when they fail.

What happens if you execute these SQL statements?
SQL> show con_name
CON_NAME
CDB$ROOT
SQL> create user 1_freed identified by y container=current;

• A. A local user is created in the root container.
• B. The second SQL statement fails because a local user cannot be created in the root container.
• C. A common user is created in the root container.
• D. A local user is created in all the PDBs.