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Oracle 1Z0-858 Exam Syllabus Topics:

Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional Sample Questions:

1. You are developing several tag libraries that will be sold for development of third-party web applications. You are about to publish the first three libraries as JAR files: container-tags.jar, advanced-html-form-tags.jar, and basic-html-form-tags.jar. Which two techniques are appropriate for packaging the TLD files for these tag libraries? (Choose two.)

A) The TLD must be located within the WEB-INF directory of the JAR file.
B) The TLD must be located within a subdirectory of META-INF directory of the JAR file.
C) The TLD must be located within a subdirectory of META-INF/tld/ directory of the JAR file.
D) The TLD must be located within the META-INF directory of the JAR file.
E) The TLD must be located within a subdirectory of WEB-INF directory of the JAR file.
F) The TLD must be located within the META-INF/tld/ directory of the JAR file.

2. A developer is designing a multi-tier web application and discovers a need to hide the details of establishing and maintaining remote communications from the client. In addition, the application needs to find, in a transparent manner, the heterogeneous business components used to service the client's requests. Which design patterns, working together, address these issues?

A) Intercepting Filter and Transfer Object
B) Model-View-Controller and Intercepting Filter
C) Front Controller and Business Delegate
D) Business Delegate and Service Locator
E) Business Delegate and Transfer Object

3. A developer has created a web application that includes a servlet for each use case in the application. These servlets have become rather difficult to maintain because the request processing methods have become very large. There is also common processing code in many servlets because these use cases are very similar. Which two design patterns can be used together to refactor and simplify this web application? (Choose two.)

A) Business Delegate
B) View Helper
C) Proxy
D) Front Controller
E) Session Facade
F) Model-View-Controller

4. Given this fragment from a Java EE deployment descriptor:
124.
<welcome-file>beta.html</welcome-file>
125.
<welcome-file>alpha.html</welcome-file>
And this request from a browser:
http://www.sun.com/SCWCDtestApp/register
Which statement is correct, when the container receives this request?

A) This deployment descriptor is NOT valid.
B) The container first looks for a servlet mapping in the deployment descriptor.
C) The container first looks in the register directory for alpha.html.
D) The container first looks in the register directory for beta.html.

5. The sl:shoppingList and sl:item tags output a shopping list to the response and are used as follows:
11.
<sl:shoppingList>
12.
<sl:item name="Bread" />
13.
<sl:item name="Milk" />
14.
<sl:item name="Eggs" />
15.
</sl:shoppingList>
The tag handler for sl:shoppingList is ShoppingListTag and the tag handler for sl:item is ItemSimpleTag.
ShoppingListTag extends BodyTagSupport and ItemSimpleTag extends SimpleTagSupport.
Which is true?

A) ShoppingListTag can find the child instances of ItemSimpleTag by calling super.getChildren() and casting each to an ItemSimpleTag.
B) ItemSimpleTag can find the enclosing instance of ShoppingListTag by calling findAncestorWithClass() on the PageContext and casting the result to ShoppingListTag.
C) It is impossible for ItemSimpleTag and ShoppingListTag to find each other in a tag hierarchy because one is a Simple tag and the other is a Classic tag.
D) ShoppingListTag can find the child instances of ItemSimpleTag by calling getChildren() on the PageContext and casting each to an ItemSimpleTag.
E) ItemSimpleTag can find the enclosing instance of ShoppingListTag by calling getParent() and casting the result to ShoppingListTag.

Solutions: