A.RMAN keeps a list of archive logs in a text file.
B.The DBA must manually tell RMAN which archive logs to backup.
C.RMAN has access to target control file and/or catalog information.
D.RMAN looks at the ARCHIVE_LOG_DEST parameter of your target database and backs up all archive logs found.

A.To verify space requirements in the target database before importing.
B.To generate the SQL for the DDL operations that would occur during import.
C.To check character set compatibility between the export file and the target database.
D.To check for integrity constraint violations that would occur in the target database.