Managing Oracle Multitenant Databases - OCP: Oracle Database 12c Administrator Certified Professional - page 579

Know how to alter your session to change the current container. Know how to determine
what container your session is currently in.
Demonstrate how to start up a CDB. Understand how to start up a CDB using SQL*Plus.
Know the different startup options.
Demonstrate how to shut down a CDB. Know how to shut down a CDB. Know the
different shutdown options.
Demonstrate how to open a PDB. Know how to open a PDB. Know how to connect to
a PDB and start up a PDB using the different options.
Demonstrate how to close a PDB. Know how to close a PDB. Know how to connect to a
PDB and shut down a PDB using the different options.
Know which initialization parameters influence the CDB and PDBs. Know which
parameters influence the behavior of the CDB and PDBs.