1Z0-858の無料問題集（276題）、1Z0-858認定試験参考書

Oracle 1Z0-858 問題集

試験コード：1Z0-858

試験名称：Java Enterprise Edition 5 Web Component Developer Certified Professional Exam

最近更新時間：2025-04-18

問題と解答：全276問

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質問 1：
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
正解：B,D

質問 2：
You have built a collection of custom tags for your web application. The TLD file is located in the file: /WEB-INF/myTags.xml. You refer to these tags in your JSPs using the symbolic name: myTags. Which deployment descriptor element must you use to make this link between the symbolic name and the TLD file name?
A. <taglib>
<name>myTags</name>
<location>/WEB-INF/myTags.xml</location>
</taglib>
B. <tags>
<tags-uri>myTags</taglib-uri>
<tags-location>/WEB-INF/myTags.xml</tags-location>
</tags>
C. <taglib>
<taglib-uri>myTags</taglib-uri>
<taglib-location>/WEB-INF/myTags.xml</taglib-location>
</taglib>
D. <tags>
<name>myTags</name>
<location>/WEB-INF/myTags.xml</location>
</tags>
正解：C

質問 3：
Which two are true about the JSTL core iteration custom tags? (Choose two.)
A. It may iterate over arrays, collections, maps, and strings.
B. It may iterate over a map, but only the key of the mapping may be used in the tag body.
C. The body of the tag may contain EL code, but not scripting code.
D. When looping over collections, a loop status object may be used in the tag body.
E. When looping over integers (for example begin='1' end='10'), a loop status object may not be used in the tag body.
正解：A,D

質問 4：
Click the Exhibit button.
Given the HTML form:
1.<html>
2.<body>
3.<form action="submit.jsp">
4.Name: <input type="text" name="i1"><br>
5.Price: <input type="text" name="i2"><br>
6.<input type="submit">
7.</form>
8.</body>
9.</html>
Assume the product attribute does NOT yet exist in any scope.
Which code snippet, in submit.jsp, instantiates an instance of com.example.Product that contains the results of the form submission?

A. <jsp:useBean id="product" type="com.example.Product">
<jsp:setProperty name="product" property="name"
value="<%= request.getParameter( "i1" ) %>" />
<jsp:setProperty name="product" property="price"
value="<%= request.getParameter( "i2" ) %>" />
</jsp:useBean>
B. <jsp:useBean id="com.example.Product" /> <jsp:setProperty name="product" property="*" />
C. <jsp:useBean id="product" class="com.example.Product" />
${product.name = param.i1}
${product.price = param.i2}
D. <jsp:useBean id="product" class="com.example.Product">
<jsp:setProperty name="product" property="name"
param="i1" />
<jsp:setProperty name="product" property="price"
param="i2" />
</jsp:useBean>
正解：D

質問 5：
You are building a dating web site. The client's date of birth is collected along with lots of other information. The Person class has a derived method, getAge():int, which returns the person's age calculated from the date of birth and today's date. In one of your JSPs you need to print a special message to clients within the age group of 25 through 35. Which two EL code snippets will return true for this condition? (Choose two.)
A. ${client.age between 25 and 35}
B. ${client.age between [25,35]}
C. ${client.age le 35 and client.age ge 25}
D. ${not client.age > 35 && client.age < 25}
E. ${client.age in [25,35]}
F. ${client.age <= 35 && client.age >= 25}
正解：C,F

質問 6：
You are creating a web form with this HTML:
11.
<form action="sendOrder.jsp">
12.
<input type="text" name="creditCard">
13.
<input type="text" name="expirationDate">
14.
<input type="submit">
15.
</form>
Which HTTP method is used when sending this request from the browser?
A. GET
B. PUT
C. POST
D. FORM
E. SEND
正解：A

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Oracle Java Enterprise Edition 5 Web Component Developer Certified Professional 認定 1Z0-858 試験問題:

1. You are creating a new JSP page and you need to execute some code that acts when the page is first executed, but only once. Which three are possible mechanisms for performing this initialization code? (Choose three.)

A) In the jspInit method.
B) In a JSP declaration, which includes an initializer block.
C) In the constructor of the JSP's Java code.
D) In a JSP declaration, which includes a static initializer block.
E) In the init method.

2. To take advantage of the capabilities of modern browsers that use web standards, such as XHTML and CSS, your web application is being converted from simple JSP pages to JSP Document format. However, one of your JSPs, /scripts/screenFunctions.jsp, generates a JavaScript file. This file is included in several web forms to create screen-specific validation functions and are included in these pages with the following statement:
10.<head>
11.<script src='/scripts/screenFunctions.jsp'
12.language='javascript'
13.type='application/javascript'> </script>
14.</head>
15.
Which JSP code snippet declares that this JSP Document is a JavaScript file?

A) <jsp:directive.page contentType='application/javascript' />
B) <jsp:document contentType='application/javascript' />
C) No declaration is needed because the web form XHTML page already declares the MIME type of the /scripts/screenFunctions.jsp file in the <script> tag.
D) <%@ page contentType='application/javascript' %>
E) <jsp:page contentType='application/javascript' />

3. 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

4. You are creating a servlet that generates stock market graphs. You want to provide the web browser with precise information about the amount of data being sent in the response stream. Which two HttpServletResponse methods will you use to provide this information? (Choose two.)

A) response.setIntHeader("Length", numberOfBytes);
B) response.setIntHeader("Content-Length", numberOfBytes);
C) response.setLength(numberOfBytes);
D) response.setContentLength(numberOfBytes);
E) response.setHeader("Content-Length", numberOfBytes);
F) response.setHeader("Length", numberOfBytes);

5. 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:declaration.instance> int count = 0; <jsp:declaration.instance>
C) <%! int count = 0; %>
D) <jsp:scriptlet.declaration> int count = 0; <jsp:scriptlet.declaration>

質問と回答：

質問 # 1
正解： A、B、D

質問 # 2
正解： A

質問 # 3
正解： D

質問 # 4
正解： B、D

質問 # 5
正解： A