310-083の無料問題集（276題）、310-083認定試験参考書

SUN 310-083 問題集

試験コード：310-083

試験名称：Sun Certified Web Component Developer for J2EE 5

最近更新時間：2024-05-02

問題と解答：全276問

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無料問題集310-083 資格取得

質問 1：
You are building a web application that will be used throughout the European Union; therefore, it has significant internationalization requirements. You have been tasked to create a custom tag that generates a message using the java.text.MessageFormat class.
The tag will take the resourceKey attribute and a variable number of argument attributes with the format, arg<N>. Here is an example use of this tag and its output:
< t:message resourceKey='diskFileMsg' arg0='MyDisk' arg1='1247' />
generates:
The disk "MyDisk" contains 1247 file(s).
Which Simple tag class definition accomplishes this goal of handling a variable number of tag attributes?
A. The Simple tag model does NOT support a variable number of attributes.
B. public class MessageTag extends SimpleTagSupport
implements DynamicAttributes {
private Map attributes = new HashMap();
public void setDynamicAttribute(String uri, String name,
Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}
C. public class MessageTag extends SimpleTagSupport
implements VariableAttributes {
private Map attributes = new HashMap();
public void setVariableAttribute(String uri,
String name, Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}
D. public class MessageTag extends SimpleTagSupport
implements DynamicAttributes {
private Map attributes = new HashMap();
public void putAttribute(String name, Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}
E. public class MessageTag extends SimpleTagSupport
implements VariableAttributes {
private Map attributes = new HashMap();
public void putAttribute(String name, Object value) {
this.attributes.put(name, value);
}
// more tag handler methods
}
正解：B

質問 2：
A developer is designing a web application which extensively uses EJBs and JMS. The developer finds that there is a lot of duplicated code to build the JNDI contexts to access the beans and queues. Further, because of the complexity, there are numerous errors in the code. Which J2EE design pattern provides a solution for this problem?
A. Session Facade
B. Transfer Object
C. Data Access Object
D. Business Delegate
E. Command
F. Service Locator
正解：F

質問 3：
Which two are true about authentication? (Choose two.)
A. Form-based logins should NOT be used when sessions are maintained by cookies or
SSL session information.
B. J2EE compliant web containers are NOT required to support the HTTPS protocol.
C. Form-based logins should NOT be used with HTTPS.
D. When using Basic Authentication the target server is NOT authenticated.
E. Web containers are required to support unauthenticated access to unprotected web resources.
正解：D,E

質問 4：
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 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.
C. 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.
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.
正解：D

質問 5：
Which two are true regarding a web application class loader? (Choose two.)
A. A web application class loader may NOT override any classes in the java.* and javax.* namespaces.
B. A web application running in a J2EE product may override classes in the javax.* namespace.
C. A web application may override the web container's implementation classes.
D. Resources in the WAR class directory or in any of the JAR files within the library directory may be accessed using the J2SE semantics of getResource.
E. Resources in the WAR class directory or in any of the JAR files within the library directory CANNOT be accessed using the J2SE semantics of getResource.
正解：A,D

質問 6：
Which security mechanism uses the concept of a realm?
A. authentication
B. authorization
C. data integrity
D. confidentiality
正解：A

質問 7：
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 in the servlet to the JSP for view generation. This information must NOT be accessible to any other servlet, JSP or session in the webapp. Which two techniques can you use to accomplish this goal? (Choose two.)
A. Add parameters to the JSP's URL when generating the request dispatcher.
B. Add attributes to the session object.
C. Use the pageContext object to add request attributes.
D. Add attributes on the request object.
E. Add parameters to the request object.
正解：A,D

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SUN Sun Certified Web Component Developer for J2EE 5 認定 310-083 試験問題:

1. Assume the custom tag my:errorProne always throws a java.lang.RuntimeException with the message "File not found."
An error page has been configured for this JSP page.
Which option prevents the exception thrown by my:errorProne from invoking the error page mechanism, and outputs the message "File not found" in the response?

A) <c:try>
< my:errorProne />
< /c:try>
< c:catch var="ex" />
$ {ex.message}
B) <c:catch var="ex">
< my:errorProne />
< /c:catch>
$ {ex.message}
C) <c:try catch="ex">
< my:errorProne />
< /c:try>
$ {ex.message}
D) <c:try>
<my:errorProne />
<c:catch var="ex" />
${ex.message}
</c:try>
E) <my:errorProne>
< c:catch var="ex">
$ {ex.message}
< /c:catch>
< /my:errorProne>

2. Your web application views all have the same header, which includes the <title> tag in the
< head> element of the rendered HTML. You have decided to remove this redundant HTML code from your JSPs and put it into a single JSP called /WEB-INF/jsp/header.jsp.
However, the title of each page is unique, so you have decided to use a variable called pageTitle to parameterize this in the header JSP, like this:
10. <title>${param.pageTitle}<title>
Which JSP code snippet should you use in your main view JSPs to insert the header and pass the pageTitle variable?

A) <jsp:include page='/WEB-INF/jsp/header.jsp'>
$ {pageTitle='Welcome Page'}
< /jsp:include>
B) <jsp:include page='/WEB-INF/jsp/header.jsp'>
< jsp:param name='pageTitle' value='Welcome Page' />
< /jsp:include>
C) <jsp:include file='/WEB-INF/jsp/header.jsp'>
$ {pageTitle='Welcome Page'}
< /jsp:include>
D) <jsp:insert page='/WEB-INF/jsp/header.jsp'>
< jsp:param name='pageTitle' value='Welcome Page' />
< /jsp:insert>
E) <jsp:insert page='/WEB-INF/jsp/header.jsp'>
$ {pageTitle='Welcome Page'}
< /jsp:insert>

3. A developer is designing a web application which extensively uses EJBs and JMS. The developer finds that there is a lot of duplicated code to build the JNDI contexts to access the beans and queues. Further, because of the complexity, there are numerous errors in the code. Which J2EE design pattern provides a solution for this problem?

A) Session Facade
B) Transfer Object
C) Data Access Object
D) Business Delegate
E) Command
F) Service Locator

4. Click the Exhibit button.
A session-scoped attribute, product, is stored by a servlet. That servlet then forwards to a
JSP page. This attribute holds an instance of the com.example.Product class with a name property of "The Matrix" and price property of 39.95.
Given the JSP page code snippet:
1 . <jsp:useBean id='product' class='com.example.Product'>
2 . <jsp:setProperty name='product' property='price' value='49.95'/>
3 . </jsp:useBean>
4 . <%= product.getName() %> costs <%= product.getPrice() %>
What is the response output of this JSP page code snippet?

A) Default costs 49.95
B) Default costs 0.0
C) The Matrix costs 0.0
D) The Matrix costs 49.95
E) Default costs 39.95
F) The Matrix costs 39.95

5. You need to create a JSP that generates some JavaScript code to populate an array of strings used on the client-side. Which JSP code snippet will create this array?

A) MY_ARRAY = new Array();
< % for ( int i = 0; i < serverArray.length; i++ ) { %>
MY_ARRAY[${i}] = '${serverArray[i]}';
< % } %>
B) MY_ARRAY = new Array();
< % for ( int i = 0; i < serverArray.length; i++ ) { %>
MY_ARRAY[<%= i %>] = '<%= serverArray[i] %>';
< % } %>
C) MY_ARRAY = new Array();
< % for ( int i = 0; i < serverArray.length; i++ ) {
MY_ARRAY[${i}] = '${serverArray[i]}';
} %>
D) MY_ARRAY = new Array();
< % for ( int i = 0; i < serverArray.length; i++ ) {
MY_ARRAY[<%= i %>] = '<%= serverArray[i] %>';
} %>