1Z0-860 Exam Questions & Answers

Exam Code: 1Z0-860

Exam Name: Java Enterprise Edition 5 Business Component Developer Certified Professional Exam

Updated: Mar 23, 2024

Q&As: 305

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Questions 1

A Java Persistence application uses a Version attribute to manage concurrent updates. Which is true?

A. The Version attribute must have a public access type.

B. The Version attribute is used by the persistence provider.

C. A separate Version attribute must be specified for each class in the inheritance hierarchy.

D. A separate Version column must be specified for each table mapped to the entity.

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Questions 2

A developer is working on a user registration application using EJB 3.0. A business method registerUser in stateless session bean RegistrationBean performs the user registration. The registerUser method executes in a transaction context started by the client. If some invalid user data causes the registration to fail, the client invokes registerUser again with corrected data using the same transaction. Which design can meet this requirement?

A. Have registerUser method call EJBContext.setRollbackOnlyOmethodafter registration fails.

B. Have registerUser method throw javax.ejb.EJBTransactionRequiredExceptionafterregistration fails.

C. HaveregisterUser method throw EJBException without marking the transaction for rollback, after registration fails.

D. Create an application exception withtherollbackattributeset to falseandhave registerUser method throwit afterregistration fails.

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Questions 3

Which two statements are correct? (Choose two.)

A. An EJB 3.0 message-driven bean can itself be the client of another message-driven bean.

B. The client of an EJB 3.0 message-driven bean can use the bean's remote business interface to communicate with the bean.

C. Every client of an EJB 3.0 JMS message-driven bean must be a Java application that uses the JMS API to communicate with the bean.

D. Messages sent to JMS topics are intended for only one receiver whereas messages sent to JMS queues are intended for multiple receivers.

E. Ifthe client of an EJB 3.0 message-driven bean awaits a reply to its request, the client can set the JMSReplyTo attribute to provide routing information to the bean.

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Questions 4

Which statement about mapping using the Java Persistence API is correct?

A. User-defined XML mapping files can be used only if orm. xml file is NOT present.

B. All mapping files other than orm. xml must be listed explicitly in the persistence, xml descriptor.

C. Mapping information specified in the XML mapping file overrides all annotations and default mappings.

D. The orm.xml file must be placed into the persistence unit's root to be processed by the persistence provider.

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Questions 5

Given an EJB 3.0 J MS message-driven bean, which statement is true about its exception handling?

A. Its message listener method must NOT throw any checked exception.

B. Its message listener method can throw java. rmi. RemoteException.

C. Its message listener method can throw any checked exception except java. rmi. RemoteException.

D. Its message listener method can throw any checked exception that implements java. io.Serializable.

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