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Oracle Java Technology 1Z0-858

1Z0-858

Exam Code: 1Z0-858

Exam Name: Java Enterprise Edition 5 Web Component Developer Certified Professional Exam

Updated: Aug 22, 2026

Q & A: 276 Questions and Answers

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Oracle 1Z0-858 Exam Syllabus Topics:

SectionObjectives
Topic 1: JavaServer Pages (JSP)- Expression Language (EL)
- Custom tags and JSTL
- JSP syntax and lifecycle
Topic 2: Servlet Technology- Filters and listeners
- Request and response handling
- Servlet lifecycle and architecture
- Session management
Topic 3: Web Application Security- Authentication and authorization
- Declarative security
Topic 4: Web Application Deployment- Packaging and deployment of WAR files
- Application server configuration
Topic 5: Web Application Design and Architecture- Model-View-Controller (MVC) pattern
- Deployment descriptors (web.xml)

Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional Sample Questions:

Question 1

You have created a web application that you license to real estate brokers. The webapp is highly customizable including the email address of the broker, which is placed on the footer of each page. This is configured as a context parameter in the deployment descriptor:
10.
<context-param>
11.
<param-name>footerEmail</param-name>
12.
<param-value>[email protected]</param-value>
13.
</context-param>
Which EL code snippet will insert this context parameter into the footer?

A. <a href='mailto:${initParam@footerEmail}'>Contact me</a>
B. <a href='mailto:${contextParam@footerEmail}'>Contact me</a>
C. <a href='mailto:${footerEmail}'>Contact me</a>
D. <a href='mailto:${initParam.footerEmail}'>Contact me</a>
E. <a href='mailto:${contextParam.footerEmail}'>Contact me</a>


Question 2

Given a portion of a valid Java EE web application's directory structure:
MyApp | |-- Directory1 | |-- File1.html | |-- META-INF | |-- File2.html
|
|-- WEB-INF
|-- File3.html
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 File3.html is directly accessible.
B. Only File1.html is directly accessible.
C. Only File1.html and File2.html are directly accessible.
D. Only File2.html and File3.html are directly accessible.
E. Only File2.html is directly accessible.
F. All three files are directly accessible.
G. Only File1.html and File3.html are directly accessible.


Question 3

Assume the custom tag my:errorProne always throws a java.lang.RuntimeException with the message "File not found."
An error page has been configured for this JSP page.
Which option prevents the exception thrown by my:errorProne from invoking the error page mechanism, and outputs the message "File not found" in the response?

A. <c:try>
<my:errorProne />
</c:try>
<c:catch var="ex" />
${ex.message}
B. <my:errorProne>
<c:catch var="ex">
${ex.message}
</c:catch>
</my:errorProne>
C. <c:catch var="ex">
<my:errorProne />
</c:catch>
${ex.message}
D. <c:try catch="ex">
<my:errorProne />
</c:try>
${ex.message}
E. <c:try>
<my:errorProne />
<c:catch var="ex" />
${ex.message}
</c:try>


Question 4

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 SKIP_PAGE constant is a valid return value for the doStartTag method.
B. The EVAL_PAGE constant is a valid return value for the doEndTag method.
C. The doAfterBody method is NOT called.
D. The doStartTag method is called once.
E. The EVAL_BODY_BUFFERED constant is a valid return value for the doStartTag method.


Question 5

Which two are characteristics of the Intercepting Filter pattern? (Choose two.)

A. It provides centralized request handling for incoming requests.
B. It allows preprocessing and postprocessing on the incoming requests and outgoing responses.
C. It reduces coupling between presentation-tier clients and underlying business services.
D. It can be added and removed unobtrusively, without requiring changes to existing code.
E. It forces resource authentication to be distributed across web components.


Solutions:

Question 1
Answer: D
Question 2
Answer: B
Question 3
Answer: C
Question 4
Answer: B,D
Question 5
Answer: B,D

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