What is the purpose of the `@PersistenceUnit` annotation in Java EE applications?

A Windows 2000 Server computer named server2 runs numerous 32bit applications and two 16bit applications. Users start the 16bit applications by running APP1.EXE for one application and APP2.EXE for another application. The 16bit applications are configured to run in the separate memory space. You want to create a performance base like chart in the system monitor for all the applications on server2. You add all of 32bit applications and now you want to add two 16bit applications. What should you do?

A

Add the APP1 and APP2 instances to the processor time counter for the process object

B

Add the NTVDM, APP1 and APP2 instances for the processor time counter for the process object

C

Add only the NTVDM instance for the percent processor time counter for the process object

D

Add the NTVDM 1 and NTVDM #2 instances for processor time counter for the process object

E

None of above

What is the primary purpose of the `@PostConstruct` annotation in Java EE applications?

A

To define JavaBean properties

B

To execute SQL queries

C

To specify a method to be executed after an instance is created and its dependencies are injected

D

To create JavaBeans

In Java EE applications, what is the purpose of the `@Resource` annotation?

A

To execute SQL queries

B

To specify a resource to be injected into a component

C

To create JavaBeans

D

To execute SQL queries

What is the purpose of the `@PreDestroy` annotation in Java EE applications?

A

To define JavaBean properties

B

To execute SQL queries

C

To specify a method to be executed before an instance is removed by the container

D

To create JavaBeans

In Java EE applications, what is the purpose of the `@PersistenceContext` annotation?

A

To define JavaBean properties

B

To execute SQL queries

C

To inject a container-managed persistence context into a component

D

To create JavaBeans

In Java web applications, what is the purpose of the `@RequestScoped` annotation?

A

To create JavaBeans

B

To execute SQL queries

C

To indicate that a bean's scope is limited to a single HTTP request

D

To define JavaBean properties

What is the purpose of the `@Produces` annotation in Java EE applications?

A

To define JavaBean properties

B

To execute SQL queries

C

To specify the media type produced by a resource method

D

To create JavaBeans

What is the purpose of the `@AroundInvoke` annotation in Java EE applications?

A

To create JavaBeans

B

To execute SQL queries

C

To intercept business method invocations

D

To define JavaBean properties

In Java web applications, what is the purpose of the `@SessionScoped` annotation?

A

To define JavaBean properties

B

To execute SQL queries

C

To indicate that a bean's scope is limited to a user session

D

To create JavaBeans

What is the purpose of the `@Path` annotation in JAX-RS (Java API for RESTful Web Services) applications?

A

To create JavaBeans

B

To execute SQL queries

C

To specify the base URI for a resource class or method

D

To define JavaBean properties

What is the purpose of the `@PersistenceUnit` annotation in Java EE applications?

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