EJB Online Quiz

Q 1 - Which of the following is true about EJB?

A - Simplified development of large scale enterprise level application.

B - Application Server/ EJB container provides most of the system level services like transaction handling, logging, load balancing, persistence mechanism, exception handling and so on.

C - EJB container manages life cycle of ejb instances thus developer needs not to worry about when to create/delete ejb objects.

D - All of the above.

Q 2 - When a remote session bean is used in EJB?

A - If ejb client is in same environment where ejb session bean is to be deployed then we use remote session bean.

B - If ejb client is in different environment where ejb session bean is to be deployed then we use remote session bean.

C - By default we use remote session bean.

D - None of the above.

Q 3 - Which of the following is correct about description attribute in @javax.ejb.Stateless annotation?

A - It is used to specify name of the session bean.

B - it is used to specify the JNDI name of the session bean.

C - It is used to provide description of the session bean.

D - None of the above.

Q 4 - Which of the following annotation is used to specify that a given ejb class is a message driven bean?

A - @javax.ejb.Stateless

B - @javax.ejb.Stateful

C - @javax.ejb.MessageDrivenBean

D - @javax.ejb.EJB

Q 5 - Which of the following annotation is used to specify Remote interface(s) of a session bean?

A - @javax.ejb.Stateless

B - @javax.ejb.Stateful

C - @javax.ejb.Remote

D - @javax.ejb.EJB

Q 6 - Which of the following is correct about @PrePersist annotation for a entity bean?

A - Method is invoked when an entity is created in database.

B - Method is invoked after an entity is created in database.

C - Method is invoked when an entity is deleted from the database.

D - Method is invoked after an entity is deleted from the database.

Q 7 - Which annotation is used to inject an ejb into another ejb?

A - @EJB

B - @Resource

C - Both of the above.

D - None of the above.

Q 8 - Which of the following is correct about a transaction in EJB?

A - A transaction is a single unit of work items.

B - A transaction follows the ACID properties.

C - Both of the above.

D - None of the above.

Q 9 - Which of the following is correct about a NOT_SUPPORTED attrribute of Container Managed Transactions in EJB?

A - Indicates that business method has to be executed within transaction otherwise a new transaction will be started for that method.

B - Indicates that a new transaction is to be started for the business method.

C - Indicates that business method will execute as part of transaction.

D - Indicates that business method should not be executed as part of transaction.

Q 10 - What JNDI stands for?

A - Java Naming and Directory Interface

B - Joint Naming and Directory Interface

C - Java Naming and Directory Intelligence

D - None of the above.