Java Enterprise Edition 5 Web Component Developer Certified Professional Exam (1Z0-858) Free Practice Test

Question 1

Your web application views all have the same header, which includes the <title> tag in the <head> element of the rendered HTML. You have decided to remove this redundant HTML code from your JSPs and put it into a single JSP called /WEB-INF/jsp/header.jsp. However, the title of each page is unique, so you have decided to use a variable called pageTitle to parameterize this in the header JSP, like this: 10. <title>${param.pageTitle}<title>
Which JSP code snippet should you use in your main view JSPs to insert the header and pass the pageTitle variable?

A. <jsp:include file='/WEB-INF/jsp/header.jsp'>
${pageTitle='Welcome Page'}
</jsp:include>

B. <jsp:include page='/WEB-INF/jsp/header.jsp'>
<jsp:param name='pageTitle' value='Welcome Page' />
</jsp:include>

C. <jsp:insert page='/WEB-INF/jsp/header.jsp'>
${pageTitle='Welcome Page'}
</jsp:insert>

D. <jsp:include page='/WEB-INF/jsp/header.jsp'>
${pageTitle='Welcome Page'}
</jsp:include>

E. <jsp:insert page='/WEB-INF/jsp/header.jsp'>
<jsp:param name='pageTitle' value='Welcome Page' />
</jsp:insert>

Correct Answer: B

Question 2

You want to create a valid directory structure for your Java EE web application, and your application uses tag files and a JAR file. Which three must be located directly in your WEBINF directory (NOT in a subdirectory of WEB-INF)? (Choose three.)

A. A directory called TLDs

B. A directory called tags

C. A directory called classes

D. A directory called lib

E. A directory called META-INF

F. The JAR file

Correct Answer: B,C,D

Question 3

A developer is designing a web application that must support multiple interfaces, including:
an XML web service for B2B HTML for web-based clients WML for wireless customers
Which design pattern provides a solution for this problem?

A. Data Access Object

B. Model-View-Controller

C. Chain of Responsibility

D. Business Delegate

E. Session Facade

Correct Answer: B

Question 4

Given:
3.class MyServlet extends HttpServlet {
4.public void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
5.// servlet code here ...
26.
}
27.
}
If the DD contains a single security constraint associated with MyServlet and its only <httpmethod> tags and <auth-constraint> tags are:
<http-method>GET</http-method>
<http-method>PUT</http-method>
<auth-constraint>Admin</auth-constraint>
Which four requests would be allowed by the container? (Choose four.)

A. A user whose role is Admin can perform a PUT.

B. A user whose role is Admin can perform a GET.

C. A user whose role is Member can perform a GET.

D. A user whose role is Admin can perform a POST.

E. A user whose role is Member can perform a PUT.

F. A user whose role is Member can perform a POST.

Correct Answer: A,B,D,F

Question 5

A developer is designing the presentation tier for a web application which requires a centralized request handling to complete common processing required by each request. Which design pattern provides a solution to this problem?

A. Remote Proxy

B. Data Access Object

C. Intercepting Filter

D. Service Activator

E. Front Controller

F. Business Delegate

Correct Answer: E

Question 6

Which security mechanism uses the concept of a realm?

A. confidentiality

B. authentication

C. authorization

D. data integrity

Correct Answer: B

Question 7

Given:
String value = getServletContext().getInitParameter("foo");
in an HttpServlet and a web application deployment descriptor that contains:
<context-param>
<param-name>foo</param-name>
<param-value>frodo</param-value>
</context-param>
Which two are true? (Choose two.)

A. The foo parameter must be defined within the <servlet> element of the deployment descriptor.

B. The foo initialization parameter can also be retrieved using getServletConfig().getInitParameter("foo").

C. The foo initialization parameter CANNOT be set programmatically.

D. Compilation fails because getInitParameter returns type Object.

E. Compilation fails because ServletContext does NOT have a getInitParameter method.

F. The foo initialization parameter is NOT a servlet initialization parameter.

Correct Answer: C,F

Question 8

Given:
6.<myTag:foo bar='42'>
7.<%="processing" %>
8.</myTag:foo>
and a custom tag handler for foo which extends TagSupport.
Which two are true about the tag handler referenced by foo? (Choose two.)

A. The EVAL_BODY_BUFFERED constant is a valid return value for the doStartTag method.

B. The doAfterBody method is NOT called.

C. The doStartTag method is called once.

D. The SKIP_PAGE constant is a valid return value for the doStartTag method.

E. The EVAL_PAGE constant is a valid return value for the doEndTag method.

Correct Answer: C,E

Question 9

Given:
3.class MyServlet extends HttpServlet {
4.public void doPut(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
5.// servlet code here ...
26.
}
27.
}
If the DD contains a single security constraint associated with MyServlet and its only <httpmethod> tags and <auth-constraint> tags are:
<http-method>GET</http-method> <http-method>PUT</http-method> <auth-constraint>Admin</auth-constraint>
Which four requests would be allowed by the container? (Choose four.)

A. A user whose role is Admin can perform a PUT.

B. A user whose role is Admin can perform a GET.

C. A user whose role is Member can perform a GET.

D. A user whose role is Admin can perform a POST.

E. A user whose role is Member can perform a PUT.

F. A user whose role is Member can perform a POST.

Correct Answer: A,B,D,F

Question 10

You are designing an n-tier Java EE application. You have already decided that some of your JSPs will need to get data from a Customer entity bean. You are trying to decide
whether to use a Customer stub object or a Transfer Object. Which two statements are true? (Choose two.)

A. Using the stub approach allows you to design the application without using a Service Locator.

B. The Transfer Object will decrease data staleness.

C. The stub will increase network traffic.

D. Only the Transfer Object will need to use a Business Delegate.

E. The stub will increase the logic necessary in the JSPs.

F. In both cases, the JSPs can use EL expressions to get data.

Correct Answer: C,F

Question 11

You have built a web application that you license to small businesses. The webapp uses a context parameter, called licenseExtension, which enables certain advanced features based on your client's license package. When a client pays for a specific service, you provide them with a license extension key that they insert into the <context-param> of the deployment descriptor. Not every client will have this context parameter so you need to create a context listener to set up a default value in the licenseExtension parameter. Which code snippet will accomplish this goal?

A. You cannot do this because context parameters CANNOT be altered programmatically.

B. String ext = context.getParameter('licenseExtension');
if ( ext == null ) {
context.setParameter('licenseExtension', DEFAULT);
}

C. String ext = context.getAttribute('licenseExtension');
if ( ext == null ) {
context.setAttribute('licenseExtension', DEFAULT);
}

D. String ext = context.getInitParameter('licenseExtension');
if ( ext == null ) {
context.resetInitParameter('licenseExtension', DEFAULT);
}

E. String ext = context.getInitParameter('licenseExtension');
if ( ext == null ) { context.setInitParameter('licenseExtension', DEFAULT); }

Correct Answer: A

Question 12

You are designing an n-tier Java EE application. You have already decided that some of your JSPs will need to get data from a Customer entity bean. You are trying to decide whether to use a Customer stub object or a Transfer Object. Which two statements are true? (Choose two.)

A. Using the stub approach allows you to design the application without using a Service Locator.

B. The Transfer Object will decrease data staleness.

C. The stub will increase network traffic.

D. Only the Transfer Object will need to use a Business Delegate.

E. The stub will increase the logic necessary in the JSPs.

F. In both cases, the JSPs can use EL expressions to get data.

Correct Answer: C,F

Question 13

A developer wants a web application to be notified when the application is about to be shut down. Which two actions are necessary to accomplish this goal? (Choose two.)

A. include a class implementing ContextDestroyedListener as part of the web application deployment

B. include a <servlet-destroy> element in the web application deployment descriptor

C. include a listener directive in a JSP page

D. include a class implementing HttpSessionAttributeListener as part of the web application deployment

E. configure a listener in the TLD file using the <listener> element

F. configure a listener in the application deployment descriptor, using the <listener> element

G. include a class implementing ServletContextListener as part of the web application deployment

Correct Answer: F,G

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Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional (1Z0-858) Free Practice Test