The TESTDBcontainer database (CDB) contains two pluggable databases (PDBs), PDB1 and PDB2.
USER1is a local user in PDB1and has the SYSBACKUPprivilege.
Connect descriptors for PDB1 and PDB2 are mapped to TNS aliases pdb1 and PDB2in tnsnames.ora.
Examine these commands executed by USER1 when all PDBs are open:

What is the outcome and why?