Question about EJB ?

[Haroldo Nascimento]

Hi
I have this question about J2EE. Anybody can help me.
1-Entity Bean pooling guarante (only one)
a) Increase scalability
b) Increase reliability
c) Increase performance
d) other
2- What is the type of EJB that: "All beans instance is equal when it is NOT invoked in the server client-invoked method":
a) Stateless
b) Statefull
c) CMP
d) BMP

3-IIOP are (choice 2):
a) security
b) conectless
c) connection based
d) used for remote connection
4- Session Bean prove fine granted to data acess object ?
Yes or not ?
5- What are the services the EJB ? (choice 2)
a) Html generation
b) Transaction services
c) lifecycle managemant
d) remote-methd invocator
6- What design patters prove tranparency access to remote object ?
7- What decrease the maintenance ?
a) High complexibilidade
b) code factory
c) code reuse

Thanks