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- EJB - Annotations
- EJB - Callbacks
- EJB - Timer Service
- EJB - Dependency Injection
- EJB - Interceptors
- EJB - Embeddable Objects
- EJB - Blobs/Clobs
- EJB - Transactions
- EJB - Security
- EJB - JNDI Bindings
- EJB - Entity Relationships
- EJB - Access Database
- EJB - Query Language
- EJB - Exception Handling
- EJB - Web Services
- EJB - Packaging Applications
EJB Online Quiz
Following quiz provides Multiple Choice Questions (MCQs) related to EJB Framework. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.
Q 1 - What EJB stands for?
Answer : B
Explaination
EJB stands for Enterprise Java Bean.
Q 2 - When a remote session bean is used in EJB?
Answer : B
Explaination
A remote session bean is used in EJB if ejb client is in different environment where ejb session bean is to be deployed.
Q 3 - Which of the following is correct about activationConfig 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.
D - It is used to specify the JNDI name of the message driven bean.
Answer : C
Explaination
activationConfig attribute in @javax.ejb.MessageDrivenBean annotation is used to specify the configuration details of the message-driven bean in operational environment of the message driven bean.
Q 4 - Which of the following is correct about description 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.
D - It is used to provide description of the message driven bean.
Answer : D
Explaination
description attribute in @javax.ejb.MessageDrivenBean annotation is used to provide description of the message driven bean.
Q 5 - Which of the following annotation is used to specify callback method of ejb lifecycle?
Answer : A
Explaination
@javax.ejb.PostActivate annotation is used to specify callback method of ejb lifecycle.
Q 6 - Which of the following is correct about @PreRemove 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.
Answer : C
Explaination
@PreRemove - method is invoked when an entity is deleted from the database.
Q 7 - Which annotation is used to inject an datasource into an ejb?
Answer : B
Explaination
@Resource annotation is used to inject an datasource into an ejb.
Answer : A
Explaination
EJB 3.0 provides support for Blob and Clob types using @Lob annotation.
Q 9 - Which of the following is correct about a SUPPORTS attrribute of Container Managed Transactions in EJB?
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.
Answer : C
Explaination
SUPPORTS - Indicates that business method will execute as part of transaction.
Q 10 - Which of the following is true about JNDI?
A - JNDI stands for Java Naming and Directory Interface.
B - It is a set of API and service interfaces.
C - Java based applications use JNDI for naming and directory services.
Answer : D
Explaination
JNDI stands for Java Naming and Directory Interface. It is a set of API and service interfaces. Java based applications use JNDI for naming and directory services.