oracle 1z0-900 practice test

You want to allow one set of roles to POST to a resource and another set of roles to GET it.
Which two configuration options should you use? (Choose two.)

• A. two separate @HttpMethodConstraints annotations and sets of roles
• B. a single @HttpMethodContstraint annotation and a map of method to roles
• C. two <web-resource-collection> with different <http-method> in the deployment descriptor
• D. a single <web-resource-collection> with two <auth-constraint> with different <http-method> in the deployment descriptor

Given the code fragment:

Assuming this bean is used only in the code fragment above, how long will the injected Bean
instance be available?

• A. for the lifetime of the enterprise application
• B. for the lifetime of the request
• C. for the lifetime of the session
• D. for the lifetime of the Service object

Which is a valid description of REST?

• A. REST provides the same architectural properties as SOAP.
• B. REST is a library that is part of JEE called JAX-RS.
• C. REST is the conventional way of interacting with information resources.
• D. REST is a Web Services standard supported by JEE and JAX-RS.

Given:

Which annotation do you use on line 1 to ensure that clients immediately time out when attempting
to concurrently invoke callMethod () while another client is already accessing the bean?

• A. @AccessTimeout (value = 1, unit = TimeUnit.SECONDS)
• B. @AccessTimeout (null)
• C. @AccessTimeout (-1)
• D. @AccessTimeout (0)

Which statement is true about the relationship between HTTP and WebSockets?

• A. A WebSocket connection is a bi-directional HTTP session with message-handling support.
• B. A WebSocket connection is initialized with an HTTP handshake.
• C. A WebSocket connection can be initialized by either client or server.
• D. A WebSocket connection uses HTTP protocol to exchange data with the browser.

A Java EE application that uses an EJB container must communicate with a legacy system developed
using non-Java technologies.
Which two Java EE technologies can be used in the integration tier of the application? (Choose two.)

• A. JMS
• B. JSF
• C. JPA
• D. JCA

Which code snippet indicates that the page you are designing is capable of handling errors?

• A. <%@page errorPage=“errorHandler.jsp”%>
• B. <%= requestScope[‘javax.servlet.error’] !=null %>
• C. <%@page isErrorPage=“true”%>
• D. <c:set var=“errorHandler” value=“true”/>

Which two elements CANNOT be injected by using an @Inject annotation? (Choose two.)

• A. static fields
• B. instance fields declared final
• C. concrete methods
• D. abstract methods

Given the following code:

What should you do at line 1 to enable this servlet receive request data without blocking?

• A. Use a Runnable instance with the start () method of AsyncContext.
• B. Define a ReadListener and assign it to the request input stream.
• C. Create a Callable class and delegate this operation to a ManagedExecutorService by using the dispatch method of AsyncContext.
• D. Define an AsyncListener and assign it to the AsyncContext object.

Identify two valid WebSocket message types for which you can register handlers. (Choose two.)

• A. Error Message
• B. Binary Message
• C. Pong Message
• D. Ping Message

You have been assigned to the Widget Editor portion of an application. It contains a Widget Editor
Facelet page, the Widget class, and a simple WidgetEditor backing bean, which contains a reference
to the current Widget instance.
Given the code fragment from the Widget class:

Given the code fragment from the Facelet page:

The page displays Conversion Error when a user fills out all the form fields and clicks the Save button.
Which step do you perform to fix this problem?

• A. Replace Line 1 with:<h: inputText id=createDatevalue=#{widgetEditor.widget.createdDate}converter=java.util.Date/>
• B. Enclose the code fragment within the <f:view/> tag
• C. Insert <f:convertDateTime”/> at Line 1
• D. Replace Line 1 with:<h:inputText id=createDatevalue=#{widgetEditor.widget.createdDate}><f:convertDateTime pattern=dd-mm- yyyy/></h:inputText>

You created two filters for your web application by using the @WebFilter annotation, one for
authorization and the other for narrowing results by the provided search criteria. The authorization
filter must be invoked first.
How can you specify this?

• A. setting the priority attribute of the @WebFilter annotation for each of the filters
• B. placing the filter mapping elements in the required order in the web.xml deployment descriptor
• C. placing @WebFilterMapping annotations in the required order
• D. specifying the filter precedence order by using the @Priority annotation

Which of these can be a JPA entity?

• A. Enum type
• B. Abstract class
• C. Interface type
• D. Final class

Which two features are provided by the JSTL Core library for a JSP? (Choose two.)

• A. iteration over a collection
• B. buffering of large result sets
• C. testing conditions
• D. message localization

How can a servlet indicate to the browser that cookie data should be sent over a secure connection?

• A. Call the getSecure(true) method on the cookie object.
• B. Encrypt the cookie data. The browser automatically sends encrypted data over a secure connection.
• C. Set the ENCRYPT header in the response.
• D. Configure SessionTrackingMode.SSL on the ServletContext object.