EJB Online Quiz

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

A - EJB is an essential part of a J2EE platform.

B - EJB provides an architecture to develop and deploy component based enterprise applications considering robustness, high scalability and high performance.

C - EJB stands for Enterprise Java Bean.

D - All of the above.

Q 2 - When a local 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 local session bean.

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

C - By default we use local session bean.

D - None of the above.

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

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

B - it is used to specify message listener interface for the message driven bean.

C - It is used to specify the configuration details of the message-driven bean in operational environment of the message driven bean.

D - It is used to specify the JNDI name of the message driven bean.

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 properties required for a message driven bean?

A - @javax.ejb.ActivationConfigProperty

B - @javax.ejb.Local

C - @javax.ejb.Remote

D - @javax.ejb.EJB

Q 6 - Which of the following is correct about @PreDestroy annotation for a callback method?

A - Method is invoked when a bean is created for the first time.

B - Method is invoked when a bean is removed from the bean pool or is destroyed.

C - Method is invoked when a bean is loaded to be used.

D - Method is invoked when a bean is put back to bean pool.

Q 7 - Which of the following is correct about Default interceptor in EJB?

A - Such interceptor is invoked for every method of the bean.

B - Such interceptor is invoked for every bean within deployment.

C - Such interceptor is invoked for a particular method of the bean.

D - None of the above.

Q 8 - Which of the following is correct about @Embeddable annotation for a entity bean?

A - A java POJO to be embedded must be annotated as @Embeddable.

B - An entity bean to be embedded must be annotated as @Embeddable.

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 - Which of the following is true about Application level exception in EJB?

A - If business rule is voilated or exception occurs while executing the business logic will be treated as application level exception.

B - Any exception which is not caused by business logic or business code. RuntimeException, RemoteException are SystemException will be treated as application level exception.

C - It is quite similar to HQL, hibernate query language.

D - All of the above.