310-083最も有効な質問と解答で勉強

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. <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>
• B. <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>
• C. <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>
• D. <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>

In your web application, you need to execute a block of code whenever the session object is first created. Which design will accomplish this goal?

• A. Create an HttpSessionListener class and implement the sessionCreated method with that block of code.
• B. Create an HttpSessionListener class and implement the sessionInitialized method with that block of code.
• C. Create a Filter class, call the getSession(true) method, and if the result was NOT null, then execute that block of code.
• D. Create an HttpSessionActivationListener class and implement the sessionCreated method with that block of code.
• E. Create a Filter class, call the getSession(false) method, and if the result was null, then execute that block of code.

Given:
6. <myTag:foo bar='42'>
7. <%="processing" %>
8. </myTag:foo>
and a custom tag handler for foo which extends TagSupport.
Which two are true about the tag handler referenced by foo? (Choose two.)

• A. The doStartTag method is called once.
• B. The EVAL_PAGE constant is a valid return value for the doEndTag method.
• C. The SKIP_PAGE constant is a valid return value for the doStartTag method.
• D. The EVAL_BODY_BUFFERED constant is a valid return value for the doStartTag method.
• E. The doAfterBody method is NOT called.

Given:
1 1. <servlet>
1 2. <servlet-name>catalog</servlet-name>
1 3. <jsp-file>/catalogTemplate.jsp</jsp-file>
1 4. <load-on-startup>10</load-on-startup>
1 5. </servlet>
Which two are true? (Choose two.)

• A. The servlet will be referenced by the name catalog in mappings.
• B. One instance of the servlet will be loaded at startup.
• C. Ten instances of the servlet will be loaded at startup.
• D. Line 14 is not valid for a servlet declaration.
• E. Line 13 is not valid for a servlet declaration.

Given:
1 . package com.example;
2 .
3 . public abstract class AbstractItem {
4 . private String name;
...
13. }
Assume a concrete class com.example.ConcreteItem extends com.example.AbstractItem.
A servlet sets a session-scoped attribute called "item" that is an instance of com.example.ConcreteItem and then forwards to a JSP page.
Which two are valid standard action invocations that expose a scripting variable to the JSP page? (Choose two.)

• A. <jsp:useBean id="com.example.ConcreteItem"
  scope="session" />
• B. <jsp:useBean id="item" class="com.example.ConcreteItem"
  scope="session" />
• C. <jsp:useBean id="item" type="com.example.ConcreteItem"
  scope="session" />
• D. <jsp:useBean id="item" type="com.example.ConcreteItem"
  class="com.example.AbstractItem"
  scope="session" />