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Oracle 1Z0-858 Exam : Java Enterprise Edition 5 Web Component Developer Certified Professional Exam
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Oracle 1Z0-858 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Web Application Security | 12% | - Data protection and transport security - Authentication methods - Authorization and roles |
| Topic 2: JSTL and Custom Tag Development | 12% | - Tag handler lifecycle - JSTL core and formatting tags - Tag files and descriptors |
| Topic 3: Expression Language (EL) and Standard Actions | 10% | - EL syntax and operators - Accessing JavaBeans and collections - Standard JSP actions |
| Topic 4: Design Patterns and Architecture | 8% | - Service Locator, Business Delegate - Intercepting Filter, Front Controller - MVC pattern |
| Topic 5: Web Container Model | 10% | - Event listeners - Container services - Filters and interceptors |
| Topic 6: Web Application Structure and Deployment | 10% | - WAR file structure - Deployment descriptor (web.xml) - Annotations for configuration |
| Topic 7: JSP Technology Model | 13% | - Elements and syntax - Implicit objects - JSP lifecycle |
| Topic 8: Session Management | 10% | - Session tracking mechanisms - Session lifecycle - Session attributes and scope |
| Topic 9: Servlet Technology Model | 15% | - Servlet configuration and initialization - Servlet lifecycle - Request and response handling |
Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional Sample Questions:
Which two are valid and equivalent? (Choose two.)
- A. <jsp:scriptlet>int i;</jsp:scriptlet>
- B. <jsp:declaration>int i;</jsp:declaration>
- C. <%= int i; %>
- D. <%! int i; %>
- E. <jsp:expr>int i;</jsp:expr>
Correct Answer: B,D 🗳️
Your IT department is building a lightweight Front Controller servlet that invokes an application logic object with the interface:
public interface ApplicationController {
public String invoke(HttpServletRequest request)
}
The return value of this method indicates a symbolic name of the next view. From this name, the Front Controller servlet looks up the JSP URL in a configuration table. This URL might be an absolute path or a path relative to the current request. Next, the Front Controller servlet must send the request to this JSP to generate the view. Assume that the servlet variable request is assigned the current HttpServletRequest object and the variable context is assigned the webapp's ServletContext.
Which code snippet of the Front Controller servlet accomplishes this goal?
- A. RequestDispatcher view = request.getRequestDispatcher(viewURL);
view.forward(request, response); - B. RequestDispatcher view = context.getRequestDispatcher(viewURL); view.forward(request, response);
- C. Dispatcher view = context.getDispatcher(viewURL); view.forwardRequest(request, response);
- D. Dispatcher view = request.getDispatcher(viewURL); view.forwardRequest(request, response);
Correct Answer: A 🗳️
Given this fragment from a 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. The container invokes castError.jsp.
- B. The container invokes mainError.jsp.
- C. The deployment descriptor is invalid.
- D. Neither mainError.jsp nor castError.jsp is invoked.
Correct Answer: A 🗳️
Given an HttpServletRequest request and HttpServletResponse response, which sets a cookie "username" with the value "joe" in a servlet?
- A. request.addHeader(new Cookie("username", "joe"))
- B. response.addCookie("username", "joe")
- C. response.addCookie(new Cookie("username", "joe"))
- D. request.addCookie(new Cookie("username", "joe"))
- E. response.addHeader(new Cookie("username", "joe"))
- F. request.addCookie("username", "joe")
- G. request.setCookie("username", "joe")
Correct Answer: C 🗳️
For a given ServletResponse response, which two retrieve an object for writing text data?
(Choose two.)
- A. response.getWriter().getOutputStream()
- B. response.getWriter()
- C. response.getOutputWriter()
- D. response.getWriter(Writer.OUTPUT_TEXT)
- E. response.getOutputStream()
Correct Answer: B,E 🗳️
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