While setting up the database for your production environment， you want to create a user with following requirements. 
1.The objects created by the user must be stored in a tablespace， TBS1， if the TABLESPACE option is not defined during the object creation. 
2.The user should be able to use 10MB of space in the tablespace TBS1. 
3.The user must change the password immediately after logging in for the first time. Which three options of the CREATE USER command would you use to achieve this objective？（）

In your database， the users SYS and SYSTEM have been assigned the profiles， ADMIN_PROF1 and ADMIN_PROF2， respectively. The rest of the database administrators are assigned the profile ADMIN_PROF3. 
You create a profile， USER_PROF， and assign it to the application user， Adams. After a week you realize that the profile is no longer required and you decide to drop it. 
What will Adam’s profile be after the USER_PROF profile has been dropped？（）