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Oracle 1Z0-858 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Web Application Design and Architecture | - Model-View-Controller (MVC) pattern - Deployment descriptors (web.xml) |
| JavaServer Pages (JSP) | - Expression Language (EL) - Custom tags and JSTL - JSP syntax and lifecycle |
| Servlet Technology | - Request and response handling - Filters and listeners - Session management - Servlet lifecycle and architecture |
| Web Application Security | - Authentication and authorization - Declarative security |
| Web Application Deployment | - Packaging and deployment of WAR files - Application server configuration |
Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional Sample Questions:
1. You want to create a valid directory structure for your Java EE web application, and your application uses tag files and a JAR file. Which three must be located directly in your WEBINF directory (NOT in a subdirectory of WEB-INF)? (Choose three.)
A) A directory called lib
B) A directory called classes
C) The JAR file
D) A directory called META-INF
E) A directory called TLDs
F) A directory called tags
2. The tl:taskList and tl:task tags output a set of tasks to the response and are used as follows:
11.
<tl:taskList>
12.
<tl:task name="Mow the lawn" />
13.
<tl:task name="Feed the dog" />
14.
<tl:task name="Do the laundry" />
15.
</tl:taskList>
The tl:task tag supplies information about a single task while the tl:taskList tag does the final output. The tag handler for tl:taskList is TaskListTag. The tag handler for tl:task is TaskTag. Both tag handlers extend BodyTagSupport.
Which allows the tl:taskList tag to get the task names from its nested tl:task children?
A) Create an addTaskName method in TaskListTag. Have the TaskListTag.doStartTag method, return BodyTag.EVAL_BODY_BUFFERED. In the TaskTag.doStartTag method, call findAncestorWithClass() on the PageContext, passing TaskListTag as the class to find. Cast the result to TaskListTag and call addTaskName().
B) In the TaskListTag.doStartTag method, call getChildTags() on the PageContext and iterate through the results. Cast each result to a TaskTag and call getName().
C) In the TaskListTag.doStartTag method, call super.getChildTags() and iterate through the results. Cast each result to a TaskTag and call getName().
D) It is impossible for a tag handler that extends BodyTagSupport to communicate with its parent and child tags.
E) Create an addTaskName method in TaskListTag. Have the TaskListTag.doStartTag method, return BodyTag.EVAL_BODY_BUFFERE In the TaskTag.doStartTag method, call super.getParent(), cast it to a TaskListTag, and call addTaskName().
3. 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 = context.getAttribute("catalog"); %>
C) <% List catalog = application.getAttribute("catalog"); %>
D) <% List catalog = config.getAttribute("catalog"); %>
4. DRAG DROP
Click the Task button.
Given a request from mybox.example.com, with an IP address of 10.0.1.11 on port 33086, place the appropriate ServletRequest methods onto their corresponding return values.
5. 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:
201.
private static final Set<String> USE_CASE_ATTRS;
202.
static {
203.
USE_CASE_ATTRS.add("customerOID");
204.
USE_CASE_ATTRS.add("custMgrBean");
205.
USE_CASE_ATTRS.add("orderOID");
206.
USE_CASE_ATTRS.add("orderMgrBean");
207.
}
Which code snippet deletes these attributes from the session object?
A) for ( String attr : USE_CASE_ATTRS ) {
session.remove(attr);
}
B) session.removeAll(USE_CASE_ATTRS);
C) session.deleteAllAttributes(USE_CASE_ATTRS);
D) for ( String attr : USE_CASE_ATTRS ) {
session.deleteAttribute(attr);
}
E) for ( String attr : USE_CASE_ATTRS ) {
session.removeAttribute(attr);
}
Solutions:
| Question # 1 Answer: A,B,F | Question # 2 Answer: E | Question # 3 Answer: C | Question # 4 Answer: Only visible for members | Question # 5 Answer: E |
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