Oracle Oracle Certifications 1Z0-858 Questions & Answers

• Question 51:

  Which three are described in the standard web application deployment descriptor? (Choose three.)

  A. session configuration

  B. MIME type mappings

  C. context root for the application

  D. servlet instance pool configuration

  E. web container default port bindings

  F. ServletContext initialization parameters

  Correct Answer: ABF

• Question 52:

  You have created a servlet that generates weather maps. The data for these maps is calculated by a remote host. The IP address of this host is usually stable, but occasionally does have to change as the corporate network grows and changes. This IP address used to be hard coded, but after the fifth change to the IP address in two years, you have decided that this value should be declared in the deployment descriptor so you do NOT have the recompile the web application every time the IP address changes. Which deployment descriptor snippet accomplishes this goal?

  A. WeatherServlet.hostIP127.0.4.20

  B. WeatherServlet.hostIP127.0.4.20

  C. WeatherServlet.hostIP127.0.4.20

  D. WeatherServlet.hostIP127.0.4.20

  E. WeatherServlet.hostIP127.0.4.20

  Correct Answer: D

• Question 53:

  In which two locations can library dependencies be defined for a web application? (Choose two.)

  A. the web application deployment descriptor

  B. the /META-INF/dependencies.xml file

  C. the /META-INF/MANIFEST.MF manifest file

  D. the /META-INF/MANIFEST.MF manifest of a JAR in the web application classpath

  Correct Answer: CD

• Question 54:

  Which two about WAR files are true? (Choose two.)

  A. WAR files must be located in the web application library directory.

  B. WAR files must contain the web application deployment descriptor.

  C. WAR files must be created by using archive tools designed specifically for that purpose.

  D. The web container must serve the content of any META-INF directory located in a WAR file.

  E. The web container must allow access to resources in JARs in the web application library directory.

  Correct Answer: BE

• Question 55:

  Given this fragment from a Java EE deployment descriptor:

  341.

  342.

  java.lang.Throwable 343. /mainError.jsp 344.

  345.

  346.

  java.lang.ClassCastException 347. /castError.jsp

  348.

  If the web application associated with the fragment above throws a ClassCastException.

  Which statement is true?

  A. The deployment descriptor is invalid.

  B. The container invokes mainError.jsp.

  C. The container invokes castError.jsp.

  D. Neither mainError.jsp nor castError.jsp is invoked.

  Correct Answer: C

• Question 56:

  Which defines the welcome files in a web application deployment descriptor?

  A. /welcome.jsp/ index.html

  B. welcome.jspindex.html

  C. welcome.jspindex.html

  D. /welcome.jsp/index.html

  E. Welcomewelcome.jspIndexindex.html

  Correct Answer: B

• Question 57:

  Click the Exhibit button.

  Assume the product attribute does NOT yet exist in any scope.

  Which two create an instance of com.example.Product and initialize the name and price properties to the name and price request parameters? (Choose two.)

  

  A.

  B. <% product.setName ( request.getParameter( "name" ) ); %><% product.setPrice( request.getParameter( "price" ) ); %>

  C.

  D.

  Correct Answer: AC

• Question 58:

  Click the Exhibit button.

  A session-scoped attribute, product, is stored by a servlet. That servlet then forwards to a JSP page. This attribute holds an instance of the com.example.Product class with a name property of "The Matrix" and price property of 39.95.

  Given the JSP page code snippet:

  1.

  2.

  3.

  4.

  <%= product.getName() %> costs <%= product.getPrice() %> What is the response output of this JSP page code snippet?

  

  A. Default costs 0.0

  B. Default costs 49.95

  C. Default costs 39.95

  D. The Matrix costs 0.0

  E. The Matrix costs 49.95

  F. The Matrix costs 39.95

  Correct Answer: B

• Question 59:

  Click the Exhibit button.

  A servlet sets a session-scoped attribute product with an instance of com.example.Product and forwards to a JSP.

  Which two output the name of the product in the response? (Choose two.)

  

  A. ${product.name}

  B.

  C. <%= product.getName() %>

  D.

  E. <%= product.getName() %>

  Correct Answer: AB

• Question 60:

  A developer is designing a multi-tier web application and discovers a need to hide the details of establishing and maintaining remote communications from the client. In addition, because the business and resource tiers are distributed, the application needs to minimize the inter-tier network traffic related to servicing client requests. Which design patterns, working together, address these issues?

  A. Front Controller and Transfer Object

  B. Front Controller and Service Locator

  C. Business Delegate and Transfer Object

  D. Business Delegate and Intercepting Filter

  E. Model-View-Controller and Intercepting Filter

  Correct Answer: C