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SUN 310-083 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Web Container Model | 14% | - Servlet context attributes - Container architecture and responsibilities - Request dispatching |
| Session Management | 12% | - URL rewriting, cookies, SSL - Session lifecycle and tracking - Session attributes and listeners |
| JSP Expression Language | 10% | - EL syntax and operators - Implicit variables and scope resolution - Functions and reserved words |
| Web Application Structure and Deployment | 12% | - Context parameters and initialization - WAR file structure - Deployment descriptor (web.xml) |
| Web Application Security | 11% | - Authentication and authorization - Transport security - Declarative and programmatic security |
| Servlet Technology Model | 15% | - Servlet lifecycle - Servlet interface and methods - Request and response handling |
| JSP Standard Actions and Custom Tags | 13% | - Simple and Classic tag handlers - Standard actions - Tag Library Descriptor |
| JSP Technology Model | 13% | - JSP elements and syntax - Implicit objects - JSP lifecycle and translation |
SUN Sun Certified Web Component Developer for J2EE 5 Sample Questions:
One of the use cases in your web application uses many session-scoped attributes. At the end of the use case, you want to clear out this set of attributes from the session object.
Assume that this static variable holds this set of attribute names:
2 01. private static final Set<String> USE_CASE_ATTRS;
2 02. static {
2 03. USE_CASE_ATTRS.add("customerOID");
2 04. USE_CASE_ATTRS.add("custMgrBean");
2 05. USE_CASE_ATTRS.add("orderOID");
2 06. USE_CASE_ATTRS.add("orderMgrBean");
207. }
Which code snippet deletes these attributes from the session object?
- A. session.removeAll(USE_CASE_ATTRS);
- B. for ( String attr : USE_CASE_ATTRS ) {
session.remove(attr);
} - C. session.deleteAllAttributes(USE_CASE_ATTRS);
- D. for ( String attr : USE_CASE_ATTRS ) {
session.removeAttribute(attr);
} - E. for ( String attr : USE_CASE_ATTRS ) {
session.deleteAttribute(attr);
}
Correct Answer: D 🗳️
The Squeaky Bean company has decided to port their web application to a new J2EE 1.4 container. While reviewing the application, a developer realizes that in multiple places within the current application, nearly duplicate code exists that finds enterprise beans.
Which pattern should be used to eliminate this duplicate code?
- A. Intercepting Filter
- B. Transfer Object
- C. Business Delegate
- D. Service Locator
- E. Front Controller
- F. Model-View-Controller
Correct Answer: D 🗳️
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
1 0. javax.servlet.http.HttpSessionBindingListener {
1 1. // class body code here
12. }
Which is true?
- A. The unbound 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 valueUnbound method of the MyObject instance is called when the session to which it is bound times out.
Correct Answer: D 🗳️
You need to store a floating point number, called Tsquare, in the session scope. Which two code snippets allow you to retrieve this value? (Choose two.)
- A. float Tsquare = ((Float) session.getAttribute.("Tsquare")).floatValue();
- B. float Tsquare = ((Float) session.getNumericAttribute.("Tsquare")).floatValue;
- C. float Tsquare = (Float) session.getAttribute("Tsquare");
- D. float Tsquare = session.getFloatAttribute("Tsquare");
- E. float Tsquare = (float) session.getNumericAttribute("Tsquare");
- F. float Tsquare = ((Float) session.getFloatAttribute.("Tsquare")).floatValue;
Correct Answer: A,C 🗳️
What is true about Java EE authentication mechanisms?
- A. If your deployment descriptor correctly declares an authentication type of
CLIENT_CERT, your users must have a certificate from an official source before they can use your application. - B. If you want your web application to support the widest possible array of browsers, and you want to perform authentication, the best choice of Java EE authentication mechanisms is DIGEST.
- C. If your deployment descriptor correctly declares an authentication type of BASIC, the container automatically requests a user name and password whenever a user starts a new session.
- D. To use Java EE FORM authentication, you must declare two HTML files in your deployment descriptor, and you must use a predefined action in the HTML file that handles your user's login.
Correct Answer: D 🗳️
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