Oracle 1Z0-858 : Java Enterprise Edition 5 Web Component Developer Certified Professional Exam
- Exam Code: 1Z0-858
- Exam Name: Java Enterprise Edition 5 Web Component Developer Certified Professional Exam
- Updated: Sep 28, 2026
- Q & A: 276 Questions and Answers
About Oracle 1Z0-858 Exam
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Oracle 1Z0-858 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| JavaServer Pages (JSP) | - JSP tag libraries
|
| Web Application Security | - Authentication and authorization
|
| Servlet Technology | - Session management
|
| Deployment and Configuration | - Web application packaging
|
| Expression Language (EL) | - EL syntax and usage
|
| Web Application Architecture | - Java EE Web tier overview
|
Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional Sample Questions:
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. The stub will increase network traffic.
- B. In both cases, the JSPs can use EL expressions to get data.
- C. The Transfer Object will decrease data staleness.
- D. Only the Transfer Object will need to use a Business Delegate.
- E. The stub will increase the logic necessary in the JSPs.
- F. Using the stub approach allows you to design the application without using a Service Locator.
Correct Answer: A,B 🗳️
A custom JSP tag must be able to support an arbitrary number of attributes whose names are unknown when the tag class is designed. Which two are true? (Choose two.)
- A. The echo tag handler must define the setAttribute(String key, String value) method.
- B. The <body-content> element in the echo tag TLD must have the value JSP.
- C. The class implementing the echo tag handler must implement the javax.servlet.jsp.tagext.IterationTag interface.
- D. The <dynamic-attributes>true</dynamic-attributes> element must appear in the echo tag TLD.
- E. The class implementing the echo tag handler must implement the javax.servlet.jsp.tagext.DynamicAttributes interface.
Correct Answer: D,E 🗳️
Your web application uses a simple architecture in which servlets handle requests and then forward to a JSP using a request dispatcher. You need to pass information calculated by the servlet to the JSP; furthermore, that JSP uses a custom tag and must also process this information. This information must NOT be accessible to any other servlet, JSP or session in the webapp. How can you accomplish this goal?
- A. This CANNOT be done as the tag handler has no means to extract this data.
- B. Add an attribute to the request object before using the request dispatcher.
- C. Store the data in a public instance variable in the servlet.
- D. Add an attribute to the context object before using the request dispatcher.
Correct Answer: B 🗳️
You need to store a Java long primitive attribute, called customerOID, into the session scope. Which two code snippets allow you to insert this value into the session? (Choose two.)
- A. long customerOID = 47L; session.setAttribute("customerOID", new Long(customerOID));
- B. long customerOID = 47L; session.setAttribute("customerOID", customerOID);
- C. long customerOID = 47L; session.setLongAttribute("customerOID", customerOID);
- D. long customerOID = 47L; session.setNumericAttribute("customerOID", new Long(customerOID));
- E. long customerOID = 47L; session.setNumericAttribute("customerOID", customerOID);
- F. long customerOID = 47L; session.setLongAttribute("customerOID", new Long(customerOID));
Correct Answer: A,B 🗳️
In a JSP-centric web application, you need to create a catalog browsing JSP page. The catalog is stored as a List object in the catalog attribute of the webapp's ServletContext object. Which scriptlet code snippet gives you access to the catalog object?
- A. <% List catalog = servletContext.getAttribute("catalog"); %>
- B. <% List catalog = application.getAttribute("catalog"); %>
- C. <% List catalog = context.getAttribute("catalog"); %>
- D. <% List catalog = config.getAttribute("catalog"); %>
Correct Answer: B 🗳️
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