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Oracle 1Z0-858 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Web Application Security | - Authentication and authorization
|
| Deployment and Configuration | - Web application packaging
|
| JavaServer Pages (JSP) | - JSP fundamentals
|
| Expression Language (EL) | - EL syntax and usage
|
| Web Application Architecture | - Java EE Web tier overview
|
| Servlet Technology | - Servlet fundamentals
|
Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional Sample Questions:
Given the definition of MyObject and that an instance of MyObject is bound as a session attribute:
8.package com.example;
9.public class MyObject implements
10.
javax.servlet.http.HttpSessionBindingListener {
11.
// class body code here
12.
}
Which is true?
- A. The valueUnbound method of the MyObject instance is called when the session to which it is bound times out.
- B. The com.example.MyObject must be declared as a servlet event listener in the web application deployment descriptor.
- C. Only a single instance of MyObject may exist within a session.
- D. The unbound method of the MyObject instance is called when the session to which it is bound times out.
Correct Answer: A 🗳️
A developer for the company web site has been told that users may turn off cookie support in their browsers. What must the developer do to ensure that these customers can still use the web application?
- A. The developer must add the string id=<sessionid> to the end of every URL to ensure that the conversation with the browser can continue.
- B. The developer must provide an alternate mechanism for managing sessions and abandon the HttpSession mechanism entirely.
- C. The developer must ensure that every URL is properly encoded using the appropriate URL rewriting APIs.
- D. The developer can ignore this issue. Web containers are required to support automatic URL rewriting when cookies are not supported.
Correct Answer: C 🗳️
Given:
5.public class MyTagHandler extends TagSupport {
6.public int doStartTag() throws JspException {
7.try {
8.// insert code here
9.} catch(Exception ex) { /* handle exception */ }
10.
return super.doStartTag();
11.
} ...
42. }
Which code snippet, inserted at line 8, causes the value foo to be output?
- A. print("foo");
- B. JspWriter w = pageContext.getOut();
- C. print("foo");
- D. JspWriter w = new JspWriter(pageContext.getResponse());
- E. JspWriter w = pageContext.getWriter();
- F. print("foo");
- G. print("foo");
- H. JspWriter w = new JspWriter(pageContext.getWriter());
Correct Answer: B 🗳️
Given the element from the web application deployment descriptor:
<jsp-property-group> <url-pattern>/main/page1.jsp</url-pattern> <scripting-invalid>true</scripting-invalid> </jsp-property-group>
and given that /main/page1.jsp contains:
<% int i = 12; %> <b><%= i %></b> What is the result?
- A. <b></b>
- B. <% int i = 12 %> <b><%= i %></b>
- C. <b>12</b>
- D. The JSP fails to execute.
Correct Answer: D 🗳️
Click the Exhibit button.
The resource requested by the RequestDispatcher is available and implemented by the DestinationServlet.
What is the result?
- A. An exception is thrown at runtime by DestinationServlet.
- B. An exception is thrown at runtime by SourceServlet.
- C. Only "hello from dest" appears in the response output stream.
- D. Both "hello from source" and "hello from dest" appear in the response output stream.
Correct Answer: B 🗳️
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