please give the answer?

[Win Yu]

12) A stateful Session bean is being passivated by its container. Assuming all fields are non-transient,which of the following values will still exist following passivation?
a) null.
b) A JDBC Connection.
c) An Entity bean.
d) A SessionContext.
e) A UserTransaction.
13) Which of the following are true concerning CMP Entity bean activation and passivation?
a) Clients do not directly communicate with a bean and are unaware of activation and passivation.
b) Storage of persistent state to the database is handled automatically by the EJB container during passivation.
c) A client must explicitly activate a bean that has been passivated.
[ March 31, 2002: Message edited by: Win Yu ]

[Dairmon Lee]

12) A stateful Session bean is being passivated by its container. Assuming all fields are non-transient,which of the following values will still exist following passivation?
a) null.
b) A JDBC Connection.
c) An Entity bean.
d) A SessionContext.
e) A UserTransaction.
My answer: a,c,d
13) Which of the following are true concerning CMP Entity bean activation and passivation?
a) Clients do not directly communicate with a bean and are unaware of activation and passivation.
b) Storage of persistent state to the database is handled automatically by the EJB container during passivation.
c) A client must explicitly activate a bean that has been passivated.
pretty sure about this: a,b

[Win Yu]

I looked at mock questions from yahoo group and could not answer most of them. I wonder if I need more study,please advise.