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：2025-05-03

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：
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. Business Delegate and Transfer Object
B. Model-View-Controller and Intercepting Filter
C. Intercepting Filter and Transfer Object
D. Business Delegate and Service Locator
E. Front Controller and Business Delegate
正解：D

質問 2：
Given a portion of a valid Java EE web application's directory structure:
MyApp
|
|-- Directory1
| |-- File1.html
|
|-- META-INF
| |-- File2.html
|
|-- WEB-INF
|-- File3.html
You want to know whether File1.html, File2.html, and/or File3.html is protected from direct access by your web client's browsers.
What statement is true?
A. Only File1.html is directly accessible.
B. Only File3.html is directly accessible.
C. All three files are directly accessible.
D. Only File1.html and File2.html are directly accessible.
E. Only File2.html and File3.html are directly accessible.
F. Only File2.html is directly accessible.
G. Only File1.html and File3.html are directly accessible.
正解：A

質問 3：
You are building a web application with a scheduling component. On the JSP, you need to show the current date, the date of the previous week, and the date of the next week. To help you present this information, you have created the following EL functions in the 'd' namespace:
name: curDate; signature: java.util.Date currentDate()
name: addWeek; signature: java.util.Date addWeek(java.util.Date, int)
name: dateString; signature: java.util.String getDateString(java.util.Date)
Which EL code snippet will generate the string for the previous week?
A. ${d:dateString[addWeek[curDate[], -1]]}
B. ${d:dateString(addWeek(curDate(), -1))}
C. ${d:dateString(d:addWeek(d:curDate(), -1))}
D. ${d:dateString[d:addWeek[d:curDate[], -1]]}
正解：C

質問 4：
Click the Exhibit button.
Assuming the tag library in the exhibit is imported with the prefix forum, which custom tag invocation produces a translation error in a JSP page?

A. <forum:message from="My Name" subject="My Subject">
< %= request.getParameter( "body" ) %>
< /forum:message>
B. <forum:message from="My Name"
subject="<%= request.getParameter( "subject" ) %>">
My message body.
< /forum:message>
C. <forum:message from="My Name" subject="My Subject" />
D. <forum:message subject="My Subject">
My message body.
< /forum:message>
E. <forum:message from="My Name" subject="${param.subject}">
${param.body}
< /forum:message>
正解：A

質問 5：
Which two statements are true about using the isUserInRole method to implement security in a Java EE application? (Choose two.)
A. Can return "true" even when its argument is NOT defined as a valid role name in the deployment descriptor.
B. It can be used independently of the getRemoteUser method.
C. It can be invoked only from the doGet or doPost methods.
D. Using the isUserInRole method overrides any declarative authorization related to the method in which it is invoked.
E. Using the isUserInRole method overrides any declarative authentication related to the method in which it is invoked.
正解：A,B

質問 6：
A web component accesses a local EJB session bean with a component interface of com.example.Account with a home interface of com.example.AccountHome and a JNDI reference of ejb/Account. Which makes the local EJB component accessible to the web components in the web application deployment descriptor?
A. <ejb-remote-ref>
< ejb-ref-name>ejb/Account</ejb-ref-name>
< ejb-ref-type>Session</ejb-ref-type>
< local-home>com.example.AccountHome</local-home>
< local>com.example.Account</local>
< /ejb-remote-ref>
B. <resource-ref>
< ejb-ref-name>ejb/Account</ejb-ref-name>
< ejb-ref-type>Session</ejb-ref-type>
< local-home>com.example.AccountHome</local-home>
< local>com.example.Account</local>
< /resource-ref>
C. <env-ref>
< ejb-ref-name>ejb/Account</ejb-ref-name>
< ejb-ref-type>Session</ejb-ref-type>
< local-home>com.example.AccountHome</local-home>
< local>com.example.Account</local>
< /env-ref>
D. <ejb-local-ref>
< ejb-ref-name>ejb/Account</ejb-ref-name>
< ejb-ref-type>Session</ejb-ref-type>
< local-home>com.example.AccountHome</local-home>
< local>com.example.Account</local>
< /ejb-local-ref>
正解：D

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. A developer for the company web site has been told that users may turn off cookie support in their browsers. What must the developer do to ensure that these customers can still use the web application?

A) The developer must add the string ?id=<sessionid> to the end of every URL to ensure that the conversation with the browser can continue.
B) The developer must ensure that every URL is properly encoded using the appropriate
URL rewriting APIs.
C) The developer must provide an alternate mechanism for managing sessions and abandon the HttpSession mechanism entirely.
D) The developer can ignore this issue. Web containers are required to support automatic
URL rewriting when cookies are not supported.

2. Given that a web application consists of two HttpServlet classes, ServletA and ServletB, and the ServletA.service method:
20. String key = "com.example.data";
21. session.setAttribute(key, "Hello");
22. Object value = session.getAttribute(key);
23.
Assume session is an HttpSession, and is not referenced anywhere else in ServletA.
Which two changes, taken together, ensure that value is equal to "Hello" on line 23?
(Choose two.)

A) ensure that the ServletA.service method is synchronized
B) ensure that ServletB synchronizes on the session object when setting session attributes
C) enclose lines 21-22 in a synchronized block:
synchronized(this) {
session.setAttribute(key, "Hello");
value = session.getAttribute(key);
}
D) enclose lines 21-22 in a synchronized block:
synchronized(session) {
session.setAttribute(key, "Hello");
value = session.getAttribute(key);
}
E) ensure that the ServletB.service method is synchronized

3. Assume a JavaBean com.example.GradedTestBean exists and has two attributes. The attribute name is of type java.lang.String and the attribute score is of type java.lang.Integer.
An array of com.example.GradedTestBean objects is exposed to the page in a request- scoped attribute called results. Additionally, an empty java.util.HashMap called resultMap is placed in the page scope.
A JSP page needs to add the first entry in results to resultMap, storing the name attribute of the bean as the key and the score attribute of the bean as the value.
Which code snippet of JSTL code satisfies this requirement?

A) <c:set var="resultMap" property="${results[0].name}"
value="${results[0].score}" />
B) <c:set target="${resultMap}" property="${results[0].name}"
value="${results[0].score}" />
C) ${resultMap[results[0].name] = results[0].score}
D) <c:set var="${resultMap}" key="${results[0].name}"
value="${results[0].score}" />
E) <c:set var="resultMap" property="${results[0].name}">
$ {results[0].value}
< /c:set>

4. Which two from the web application deployment descriptor are valid? (Choose two.)

A) <error-page>
< exception-type>java.lang.Error</exception-type>
< location>/error.html</location>
< /error-page>
B) <error-page>
< exception-type>*</exception-type>
< location>/error.html</location>
< /error-page>
C) <error-page>
< exception-type>java.io.IOException</exception-type>
< location>/error.html</location>
< /error-page>
D) <error-page>
< exception-type>NullPointerException</exception-type>
< location>/error.html</location>
< /error-page>
E) <error-page>
< exception-type>java.lang.Throwable</exception-type>
< location>/error.html</location>
< /error-page>

5. A web component accesses a local EJB session bean with a component interface of com.example.Account with a home interface of com.example.AccountHome and a JNDI reference of ejb/Account. Which makes the local EJB component accessible to the web components in the web application deployment descriptor?

A) <ejb-remote-ref>
< ejb-ref-name>ejb/Account</ejb-ref-name>
< ejb-ref-type>Session</ejb-ref-type>
< local-home>com.example.AccountHome</local-home>
< local>com.example.Account</local>
< /ejb-remote-ref>
B) <resource-ref>
< ejb-ref-name>ejb/Account</ejb-ref-name>
< ejb-ref-type>Session</ejb-ref-type>
< local-home>com.example.AccountHome</local-home>
< local>com.example.Account</local>
< /resource-ref>
C) <env-ref>
< ejb-ref-name>ejb/Account</ejb-ref-name>
< ejb-ref-type>Session</ejb-ref-type>
< local-home>com.example.AccountHome</local-home>
< local>com.example.Account</local>
< /env-ref>
D) <ejb-local-ref>
< ejb-ref-name>ejb/Account</ejb-ref-name>
< ejb-ref-type>Session</ejb-ref-type>
< local-home>com.example.AccountHome</local-home>
< local>com.example.Account</local>
< /ejb-local-ref>