Exam Name: Java Enterprise Edition 5 Web Component Developer Certified Professional Exam
Certification Provider: Oracle
Corresponding Certification: Java Technology
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Oracle 1Z0-858 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Topic 1: Web Application Deployment | - Application server configuration - Packaging and deployment of WAR files |
| Topic 2: JavaServer Pages (JSP) | - Expression Language (EL) - JSP syntax and lifecycle - Custom tags and JSTL |
| Topic 3: Web Application Design and Architecture | - Deployment descriptors (web.xml) - Model-View-Controller (MVC) pattern |
| Topic 4: Servlet Technology | - Session management - Servlet lifecycle and architecture - Request and response handling - Filters and listeners |
| Topic 5: Web Application Security | - Declarative security - Authentication and authorization |
Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional Sample Questions:
For manageability purposes, you have been told to add a "count" instance variable to a critical JSP Document so that a JMX MBean can track how frequent this JSP is being invoked. Which JSP code snippet must you use to declare this instance variable in the JSP Document?
- A. <jsp:declaration> int count = 0; <jsp:declaration>
- B. <jsp:scriptlet.declaration> int count = 0; <jsp:scriptlet.declaration>
- C. <jsp:declaration.instance> int count = 0; <jsp:declaration.instance>
- D. <%! int count = 0; %>
A web application uses the HttpSession mechanism to determine if a user is "logged in." When a user supplies a valid user name and password, an HttpSession is created for that user.
The user has access to the application for only 15 minutes after logging in. The code must determine how long the user has been logged in, and if this time is greater than 15 minutes, must destroy the HttpSession.
Which method in HttpSession is used to accomplish this?
- A. getCreationTime
- B. invalidateAfter
- C. getMaxInactiveInterval
- D. getLastAccessedTime
Which two statements are true about the security-related tags in a valid Java EE deployment descriptor? (Choose two.)
- A. Every <security-constraint> tag must have at least one <http-method> tag.
- B. A <security-constraint> tag can have many <web-resource-collection> tags.
- C. A given <auth-constraint> tag can apply to only one <web-resource-collection> tag.
- D. It is possible to construct a valid <security-constraint> tag such that, for a given resource, no user roles can access that resource.
- E. A given <web-resource-collection> tag can contain from zero to many <url-pattern> tags.
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. Add an attribute to the request object before using the request dispatcher.
- B. Store the data in a public instance variable in the servlet.
- C. This CANNOT be done as the tag handler has no means to extract this data.
- D. Add an attribute to the context object before using the request dispatcher.
What is the purpose of session management?
- A. To manage the user's login and logout activities.
- B. To store information on the server-side between HTTP requests.
- C. To store information on the client-side between HTTP requests.
- D. To tell the web container to keep the HTTP connection alive so it can make subsequent requests without the delay of making the TCP connection.
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