Important Interview Questions of Enterprise JavaBeans Technology (EJB)

• What is EJB?
• What are the different kind of Ebb’s?
• You are designing architecture for a project how do you decide whether you should use session, entity or message driven bean?
• Can you explain “EJBHome” and “EJBObject” in EJB?
• Can client directly create object of session or entity beans?
• Can you explain the concept of local interfaces?
• What are the limitations of using Local object?
• Which application server have you used for EJB?
• Can you explain step by step practically developing and deploying EJB component?
• What is Passivation and Activation in EJB?
• Can beans who are involved in transaction have “Passivation” process?
• How does the server decide which beans to passivity and activate?
• In what format is the conversational data written to the disk?
• Can you explain in brief Life cycle for Stateless and Stateful beans?