You execute this command in MOUNT mode： ALTER DATABASE ARCHIVELOG； 
Where is the information that the database is now in ARCHIVELOG mode stored？（）

You are using RMAN to perform a closed database backup of your database. You issue these RMAN commands： STARTUP MOUNT； BACKUP 
FORMAT ’/BACKUP/df_%d_%s_%p.bus’ 
DATABASE filesperset = 2； 
Which components are included in the backup？（）

You want to create a copy of the DEPARTMENTS table. When that is complete， you want to truncate the new DEPARTMENTS table， then restore the data with a direct-load insert from the old DEPARTMENTS table. 
Which CREATE statement should you use？（）