One of the use cases in your web application uses many session-scoped attributes. At the end of the usecase，you want to clear out this set of attributes from the session object. Assume that this static variableholds this set of attribute names：
201.private static final Set USE_CASE_ATTRS； 
202.static {
203.USE_CASE_ATTRS.add（"customerOID"）；
204.USE_CASE_ATTRS.add（"custMgrBean"）；
205.USE_CASE_ATTRS.add（"orderOID"）；
206.USE_CASE_ATTRS.add（"orderMgrBean"）；
207.}
Which code snippet deletes these attributes from the session object？（）

单项选择题A web component accesses a local EJB session bean with a component interface of com.example.Accountwith a home interface of com.example.AccountHome and a JNDI reference of ejb Account. Which makesthe local EJB component accessible to the web components in the web application deployment descriptor？（）

A.
B.
C.
D.

单项选择题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 yourweb client’s browsers. What statement is true？（）

A.All three files are directly accessible.
B.Only File1.html is directly accessible.
C.Only File2.html is directly accessible.
D.Only File3.html is directly accessible.

多项选择题Given： 11.<servlet> 12.<servlet-name>catalog< servlet-name> 13.<jsp-file> catalogTemplate.jsp< jsp-file> 14.<load-on-startup>10< load-on-startup> 15.< servlet> Which two are true？（）

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

单项选择题WhichpathisrequiredtobepresentwithinaWARfile？（）

A./classes
B./index.html
C./MANIFEST-INF
D./WEB-INF/web.xml
E./WEB-INF/classes

单项选择题After a merger with another small business， your company has inherited a legacy WAR file but the originalsource files were lost. After reading the documentation of that web application，you discover that the WARfile 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.Simply rename the legacy WAR file as a JAR file and place it in your webapp’s library directory.
B.Unpack the legacy WAR file， move the TLD file to the META-INF directory， repackage the whole thingas a JAR file， and place that JAR file in your webapp’s library directory.
C.Unpack the legacy WAR file， move the TLD file to the META-INF directory， move the class files to thetop-level directory， repackage the whole thing as a JAR file， and place that JAR file in your webapp’slibrary 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 WAR， and place that WAR file in your webapp’s WEB-INF directory.