Study tips 1z0-860

Which two are true?

which statement is correct assuming there is NO mapping descriptor?

Which example of Java Persistence identity definitions is portable and correct assuming NO mapping descriptor is present?

Which is true about that bean instance when control reaches Line 12?

Which statement is correct?

return (i == 0) ?

Which two statements are true about EJB 3.0 session bean transaction management?

Which two types can be legally returned from that method?

Which two roles are responsible for creating this deployment descriptor?

which three are true about the EJB business component tier?