Java EJB Quiz

Description: Java EJB Quiz
Number of Questions: 10
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Tags: java ejb
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What type of enterprise bean is used to embody application processing state information?

  1. javax.ejb.EnterpriseBean

  2. javax.ejb.SessionBean

  3. javax.ejb.MessageBean

  4. javax.ejb.EntityBean

Correct Option: B
  1. javax.ejb.MessageDrivenBean

  2. java.io.Serializable

  3. javax.enterprise.deploy.model.J2eeApplicationObject

  4. javax.jms.MessageListener

  5. javax.ejb.EJBException

Correct Option: A,D

Which methods should NOT be defined inside the home interface of a session bean? (2 correct answers)

  1. find methods

  2. multiple create() methods

  3. business methods

  4. remove() methods

Correct Option: A
  1. The ejbRemove() method of Person invokes the remove() method of Address.

  2. The ejbStore() method of Person invokes the ejbStore() method of Address.

  3. The ejbPassivate() method of Person invokes the ejbPassivate() method of Address.

  4. The ejbLoad() method of Person invokes the findByPrimaryKey() method of Address-Home.

  5. The ejbLoad() method of Person invokes the ejbLoad() method of Address.

Correct Option: A,E
  1. The native library directory in the classpath must be specified

  2. A message listener port must be defined

  3. The message listener service must be enabled

  4. A message passivation directory must be specified

Correct Option: B
  1. to enhance the SQL96 standard with additional options for complex relationships

  2. instead of the findByPrimaryKey() method, to define alternative selection criteria

  3. to specify a concrete implementation for the find and select methods of CMP entity beans

  4. for accessing User Defined data types and Stored Procedures in the database.

Correct Option: C

Container managed transactions are defined via trans-attributes in the deployment descriptor. When a session bean demarcates the transaction and calls an Entity Bean, what is the best transactional setting for the Entity Bean?

  1. Supports

  2. Never

  3. Required

  4. RequiresNew

Correct Option: C
  1. Specify the "context root" for each web application

  2. Generate access beans for any enterprise beans

  3. Assign alias names to the attributes of the Entity beans

  4. Map the Entity beans’ attributes to the relational database tables

Correct Option: A,D
  1. There are no public instance variables.

  2. All persistent values are accessed using getxxxand setxxxmethods.

  3. It may have many constructors as necessary.

  4. All of the above are true of a Java bean.

Correct Option: C
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