1) Which of the following statements are true about Enterprise Java Beans architecture?
- 1. EJB architecture defines distributed component based architecture for business applications
- 2. EJB is a standard that is built on top of Web Services architecture
- 3. EJB Architecture is language independent, meaning that it is possible to write components using any programming language.
-
- 4. EJB specification defines support for integrating with Web Services
2) Which of the following statements are true?
- 1. Enterprise Beans developed for a particular EJB Container may not be compliant with other EJB Containers.
- 2. The life-cycle of Enterprise Beans are not managed by the EJB Container, instead they are managed by the clients.
- 3. EJB provides middle-ware support like transaction management, connection pooling, state management to Applications
Answers
1) a and d.
Answers a and d are correct. The Specification says that EJB is a component oriented middleware for building distributed business applications. Choice b is incorrect as Web Services are not the basement architecture for EJB. Answer c is also incorrect as Java is the only language (as of now) for writing Application components. Answer d is correct as EJB provides a standard support for integrating with Web Service components.
2) a and c
Answers a and c are correct. Choice b is incorrect as the entire life-cycle of an Enterprise Beans will be managed only by the EJB Container.
