Which of the following are guaranteed capabilities of EJB 2.0?

Options
- Run-as security identity functionality.
- The extension of JDBC 2.0
- Both A and B
- Neither A nor B

CORRECT ANSWER : Both A and B

Discussion Board
EJB2.0

EJB 2.0 brought lots of variations as it simplified the job of developer by providing the following built-in services

1. RMI/RMI-IIOP ( Distributed computing)
2. Transactions
3. Security
4. Resource pooling
5. Thread safe
6. Client state
7. Persistence
8. Messaging
9. Life cycle
10. JDBC extension
11. Run-as security identity

EJB2.0 made easy for developers as they don't have to write infrastructure code for these services, rather vendors provide EJB container/server that support all these services.

The services can be used without writing any code for any of them. EJB also focuses on improving the performance when using the following types:
1. Stateless session bean
2. Stateful session bean
3. Entity bean
4. Message driven bean

Rohit Sharma 08-21-2014 07:05 PM

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