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SUN 310-083 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| The Servlet Technology Model | - Java Servlet Technology |
| The Web Container Model | - Getting Started with Web Applications - Java Servlet Technology |
| The JavaServer Pages (JSP) Technology Model | - JavaServer Pages Technology |
| Building a Custom Tag Library | - Custom Tags in JSP Pages |
| Building JSP Pages Using Standard Actions | - JavaServer Pages Technology |
| Building JSP Pages Using Tag Libraries | - JavaServer Pages Standard Tag Library |
| Session Management | - JavaServer Pages Technology - Getting Started with Web Applications - Java Servlet Technology |
| The Structure and Deployment of Web Applications | - Getting Started with Web Applications |
| Web Application Security | - Securing Web Applications |
SUN Sun Certified Web Component Developer for J2EE 5 Sample Questions:
Given:
1 1. <%
1 2. request.setAttribute("vals", new String[]{"1","2","3","4"});
1 3. request.setAttribute("index", "2");
1 4. %>
1 5. <%-- insert code here --%>
Which three EL expressions, inserted at line 15, are valid and evaluate to "3"? (Choose three.)
- A. ${vals.index}
- B. ${vals.(vals.index)}
- C. ${vals}[index]
- D. ${vals[index]}
- E. ${vals[vals[index-1]]}
- F. ${vals["2"]}
- G. ${vals.2}
Which two statements are true about using the isUserInRole method to implement security in a Java EE application? (Choose two.)
- A. It can be used independently of the getRemoteUser method.
- B. Using the isUserInRole method overrides any declarative authentication related to the method in which it is invoked.
- C. Using the isUserInRole method overrides any declarative authorization related to the method in which it is invoked.
- D. It can be invoked only from the doGet or doPost methods.
- E. Can return "true" even when its argument is NOT defined as a valid role name in the deployment descriptor.
After a merger with another small business, your company has inherited a legacy WAR file but the original source files were lost. After reading the documentation of that web application, you discover that the WAR file contains a useful tag library that you want to reuse in your own webapp packaged as a WAR file.
What do you need to do to reuse this tag library?
- A. Unpack the legacy WAR file, move the TLD file to the META-INF directory, repackage the whole thing as a JAR file, and place that JAR file in your webapp's library directory.
- B. Simply rename the legacy WAR file as a JAR file and place it in your webapp's library directory.
- C. Unpack the legacy WAR file, move the TLD file to the META-INF directory, move the class files to the top-level directory, repackage the whole thing as a JAR file, and place that
JAR file in your webapp's library directory. - D. Unpack the legacy WAR file, move the TLD file to the META-INF directory, move the class files to the top-level directory, repackage the WAR, and place that WAR file in your webapp's WEB-INF directory.
You want to create a filter for your web application and your filter will implement javax.servlet.Filter.
Which two statements are true? (Choose two.)
- A. Your filter class must also implement javax.servlet.FilterChain.
- B. When your filter chains to the next filter, it should pass the same arguments it received in its doFilter method.
- C. Your filter class must implement an init method and a destroy method.
- D. The method that your filter invokes on the object it received that implements javax.servlet.FilterChain can invoke either another filter or a servlet.
- E. Your filter class must implement a doFilter method that takes, among other things, an
HTTPServletRequest object and an HTTPServletResponse object.
Which three are true about the HttpServletRequestWrapper class? (Choose three.)
- A. A subclass of HttpServletRequestWrapper CANNOT modify the behavior of the getReader method.
- B. An HttpServletRequestWrapper CANNOT be used on the request passed to the
RequestDispatcher.include method. - C. An HttpServletRequestWrapper may modify the header of a request within an object implementing the javax.servlet.Filter interface.
- D. An HttpServletRequestWrapper may be used only by a class implementing the javax.servlet.Filter interface.
- E. The HttpServletRequestWrapper is an example of the Decorator pattern.
- F. The HttpServletRequestWrapper can be used to extend the functionality of a servlet request.
