Oracle Java EE 6 Web Component Developer Certified Expert

QUESTION NO: 1
Your web application requires the ability to load and remove web files dynamically to the web container's file system? Which two HTTP methods are used to perform these actions? (Choose two)

A. DELETE B. DESTROY C. REMOVE D. POST E. SEND F. PUT

Correct Answer: A,F

QUESTION NO: 2
Given the fragment from Java EE deployment descriptor:
341. <error-page>
342. <exception-type>java.lang.Throwable</exception-type>
343. <location>/mainError.jsp</location>
344. </error-page>
345. <error-page>
346. <exception-type>java.lang.ClassCastException</exception-type>
347. <location>/castError.jsp</location>
348. </error-page>
If the web application associated with the fragment above throws a ClassCastException.
Which statement is true?

A. Neither mainError.jsp nor castError.jsp is invoked. B. The deployment descriptor is invalid. C. The container invokes castError.jsp D. The container invokes mainError.jsp

Correct Answer: C

QUESTION NO: 3
A popular Ajax framework and its companion widget library contain several hundreds of files of different types (.js, .ess, .html). Your company has mandated that all its web applications use only specific versions of this framework approved by IT and repackaged internally as jar files. Furthermore, web applications should only include the entire jar, without subsetting or modification.
Where should the framework's files be placed inside a jar file to enable this kind of reuse?

A. under resources B. under WEB-INF/resources C. under META-INF/web-contents D. under META-INF/resources

Correct Answer: D

QUESTION NO: 4
You are creating a JSP page to display a collection of data. This data can be displayed in several different ways so the architect on your project decided to create a generic servlet that generates a comma delimited string so that various pages can render the data in different ways. This servlet takes on request parameter:
objoctID. Assume that this servlet is mapped to the URL pattern: /WEB-INF/data.
In the JSP you are creating, you need to split this string into its elements separated by commas and generate an HTML <ul> list from the data.
Which JSTL code snippet will accomplish this goal?

A. <c:import var='dataString' url='/WEB-INF/data'><c:param name='objectID' value='${currentOID}'
/></c:import><ul><c:forTokens items'${dataString.split(",")}'
var='item'><li>${item}</li></c:forTokens></ul> B. <c:import varReader='dataString' url='/WEB-INF/data'><c:param name='objectID' value='${currentOID}' /></c:import><ul><c:forTokens items'${dataString.split(",")}' var='item'><li>${item}</li></c:forTokens></ul> C. <c:import var='dataString' url='/WEB-INF/data'><c:param name='objectID' value='${currentOID}'
/></c:import><ul><c:forTokens items'${dataString}' delims=','
var='item'><li>${item}</li></c:forTokens></ul> D. <c:import varReader='dataString' url='/WEB-INF/data'><c:param name='objectID' value='${currentOID}' /></c:import><ul><c:forTokens items'${dataString}' delims=',' var='item'><li>${item}</li></c:forTokens></ul>

Correct Answer: C

QUESTION NO: 5
An application stores session data in a JavaBean object. The object is then stored in the HttpSession object.
Which is true?

A. Synchronization of all bean methods is required to ensure thread safety. B. The servlet should implement SingleThreadModel C. The servlet should take precautions to ensure that concurrent access to the bean is prevented. D. Thread safety is not an issue, since concurrent access to a single session is impossible. E. Appropriate protection against problems caused by concurrent access should be provided by the bean.

Correct Answer: B

QUESTION NO: 6
Given a war file with the following structure

where wf.jar contains a valid web-fragment.xml and the class MyServlet.class.
The following is a snippet of web.xml

The following is a snippet of web-fragment.xml

The following is code snippet of MyServlet:

What is the value of x inside doGet method of MyServlet?

A. 0 B. 1 C. -1 D. -2 E. -3

Correct Answer: A

QUESTION NO: 7
You are building a dating web site. The client's date of birth is collected along with lots of other information.
The Person class has a derived method, getAge() :int, which returns the person's age calculated from the date of birth and today's date. In one of your JSPs you need to print a special message to clients within the age group of 25 through 35.
Which two EL code snippets will return true for this condition? (Choose two.)

A. ${client.age > 35 && client.age < 25} B. ${client.age between 25,35} C. ${client.age le 35 and client.age ge 25} D. ${client.age <= 35 && client.age >= 25} E. ${client.age between [25,35]} F. ${client.age in [25,35]}

Correct Answer: C,D

QUESTION NO: 8
Given the portion of a valid Java EE web application's directory structure:

You want to know whether File1.html, File2.html, and/or File3.html is protected from direct access by your web client's browsers. What statement is true?

A. Only File2.html is directly accessible. B. Only File1.html and File2.html are directly accessible. C. Only File1.html and File3.html are directly accessible. D. Only File3.html is directly accessible. E. All three files are directly accessible. F. Only File2.html and File3.html are directly accessible. G. Only File1.html is directly accessible.

Correct Answer: G

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QUESTION NO: 9
Given the annotation for MyServlet:
@WebServlet{"/abc")
@ServletSecurity (value=@HttpConstraint)
public class Myservlet extends Httpservlet {
Which two are true? (Choose two)

A. No protection of user data must be performed by the transport. B. Only authenticated users are to be permitted. C. Access is to be permitted independent of authentication state and identity. D. Access is to be denied independent of authentication state and identity. E. All user data must be encrypted by the transport.

Correct Answer: A,C

QUESTION NO: 10
Assume a JavaBean com.example.GradedTestBean exists and has two attributes. The attribute name of type java.lang.string and the attribute score is of type jave.lang.Integer.
An array of com.example.GradedTestBean objects is exposed to the page in a request-scoped attribute called results. Additionally, an empty java.util.HashMap called resultMap is placed in the page scope.
A JSP page needs to add the first entry in results to resultMap, storing the name attribute of the bean as the key and the score attribute of the bean as the value.
Which code snippet of JSTL code satisfies this requirement?

A. <c:set var="${resultMap}" key="{results[0].name}"value="${results[0].score}" /> B. ${resultMap[results[0].name] = results[0].score} C. <c:set var="resultMap" property="${results[0].name}">${results[0].value}</c:set> D. <c:set var="resultMap" property="${results[0].name}">value="${results[0].score}" /> E. <c:set target="${resultMap}" property="${results[0].name}">value="${results[0].score}" />

Correct Answer: E

Oracle Java EE 6 Web Component Developer Certified Expert - 1Z0-899 Exam Questions