Oracle Java Technology 1Z0-858

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Oracle 1Z0-858 試験シラバストピック:

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

1. Which three are described in the standard web application deployment descriptor? (Choose three.)

A) ServletContext initialization parameters
B) servlet instance pool configuration
C) web container default port bindings
D) session configuration
E) MIME type mappings
F) context root for the application

2. You web application uses a lot of Java enumerated types in the domain model of the application. Built into each enum type is a method, getDisplay(), which returns a localized, user-oriented string. There are many uses for presenting enums within the web application, so your manager has asked you to create a custom tag that iterates over the set of enum values and processes the body of the tag once for each value; setting the value into a page-scoped attribute called, enumValue. Here is an example of how this tag is used:
10.
<select name='season'>
11.
<t:everyEnum type='com.example.Season'>
12.
<option value='${enumValue}'>${enumValue.display}</option>
13.
</t:everyEnum>
14.
</select>
You have decided to use the Simple tag model to create this tag handler.
Which tag handler method will accomplish this goal?

A) public void doTag() throw JspException {
try {
for ( Enum value : getEnumValues() ) {
getJspContext().setAttribute("enumValue", value);
getJspBody().invoke(null);
}
} (Exception e) { throw new JspException(e); }
}
B) public void doTag() throw JspException {
try {
for ( Enum value : getEnumValues() ) {
pageContext.setAttribute("enumValue", value);
getJspBody().invoke(getJspContext().getWriter());
}
} (Exception e) { throw new JspException(e); }
}
C) public void doTag() throw JspException {
try {
for ( Enum value : getEnumValues() ) {
pageContext.setAttribute("enumValue", value);
getJspBody().invoke(getOut());
}
} (Exception e) { throw new JspException(e); }
}
D) public void doTag() throw JspException {
try {
for ( Enum value : getEnumValues() ) {
getJspContext().setAttribute("enumValue", value);
getJspBody().invoke(getJspContext().getWriter());
}
} (Exception e) { throw new JspException(e); }
}

3. After a merger with another small business, your company has inherited a legacy WAR file but the original source files were lost. After reading the documentation of that web application, you discover that the WAR file contains a useful tag library that you want to reuse in your own webapp packaged as a WAR file.
What do you need to do to reuse this tag library?

A) Unpack the legacy WAR file, move the TLD file to the META-INF directory, repackage the whole thing as a JAR file, and place that JAR file in your webapp's library directory.
B) Unpack the legacy WAR file, move the TLD file to the META-INF directory, move the class files to the top-level directory, repackage the WAR, and place that WAR file in your webapp's WEB-INF directory.
C) Simply rename the legacy WAR file as a JAR file and place it in your webapp's library directory.
D) Unpack the legacy WAR file, move the TLD file to the META-INF directory, move the class files to the top-level directory, repackage the whole thing as a JAR file, and place that JAR file in your webapp's library directory.

4. A developer wants to make a name attribute available to all servlets associated with a particular user, across multiple requests from that user, from the same browser instance.
Which two provide this capability from within a tag handler? (Choose two.)

A) pageContext.setAttribute("name", theValue, PageContext.PAGE_SCOPE);
B) pageContext.setAttribute("name", theValue, PageContext.SESSION_SCOPE);
C) pageContext.getSession().setAttribute("name", theValue);
D) pageContext.setAttribute("name", getSession());
E) pageContext.getRequest().setAttribute("name", theValue);
F) pageContext.setAttribute("name", theValue);

5. For debugging purposes, you need to record how many times a given JSP is invoked before the user's session has been created. The JSP's destroy method stores this information to a database. Which JSP code snippet keeps track of this count for the lifetime of the JSP page?

A) <%@ int count = 0; %>
<% if ( request.getSession(false) == null ) count++; %>
B) <%! int count = 0;
if ( request.getSession(false) == null ) count++; %>
C) <% int count = 0;
if ( request.getSession(false) == null ) count++; %>
D) <%! int count = 0; %>
<% if ( request.getSession(false) == null ) count++; %>
E) <%@ int count = 0;
if ( request.getSession(false) == null ) count++; %>

質問と回答：