You need to store a floating point number，called Tsquare，in the session scope.
Which two code snippetsallow you to retrieve this value？（）
A.float Tsquare = session.getFloatAttribute（"Tsquare"）；
B.float Tsquare = （Float） session.getAttribute（"Tsquare"）；
C.float Tsquare = （float） session.getNumericAttribute（"Tsquare"）；
D.float Tsquare = （（Float） session.getAttribute.（"Tsquare"））.floatValue（）；
E.float Tsquare = （（Float） session.getFloatAttribute.（"Tsquare"））.floatValue；
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Given an HttpServletRequest request：
22.String id = request.getParameter（"jsessionid"）；
23.// insert code here
24.String name = （String） session.getAttribute（"name"）；
Which three can be placed at line 23 to retrieve anexisting HttpSession object？（）
A.HttpSession session = request.getSession（）；
B.HttpSession session = request.getSession（id）；
C.HttpSession session = request.getSession（true）；
D.HttpSession session = request.getSession（false）；
E.HttpSession session = request.getSession（"jsessionid"）；
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？（）
A.session.removeAll（USE_CASE_ATTRS）；
B.for （ String attr ： USE_CASE_ATTRS ） {session.remove（attr）；}
C.for （ String attr ： USE_CASE_ATTRS ） {session.removeAttribute（attr）；}
D.for （ String attr ： USE_CASE_ATTRS ） {session.deleteAttribute（attr）；}
E.session.deleteAllAttributes（USE_CASE_ATTRS）；
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.
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.
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Click the ’Select and Place’ button.Place the events in the order they occur.
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Click the ’Select and Place’ button.Place the events in the order they occur.
Which is true about the web container request processing model？（）
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You are building a dating service web site. Part of the form to submit a client’s profile is a groupIIof radio buttons for the person’s hobbies：20.<input type=’radio’ name=’hobbyEnum’ value=’HIKING’>Hiking <br>21.<input type=’radio’ name=’hobbyEnum’ value=’SKIING’>Skiing <br>22.<input type=’radio’ name=’hobbyEnum’ value=’SCUBA’>SCUBA Diving23.<!-- and more options -->After the user submits this form， a confirmation screen is displayed with these hobbies listed. Assume thatan application-scoped variable， hobbies， holds a map between the Hobby enumerated type and the displayname.Which EL code snippet will display Nth element of the user’s selected hobbies？（）
Given a web application in which the request parameter productID contains a product identifier.Which twoEL expressions evaluate the value of the productID？（）
In which three directories， relative to a web application’s root， may a tag library descriptor file reside whendeployed directly into a web application？（）
Your IT department is building a lightweight Front Controller servlet that invokes an application logic objectwith the interface：public interface ApplicationController {public String invoke（HttpServletRequest request）}The return value of this method indicates a symbolic name of the next view. From this name， the FrontController servlet looks up the JSP URL in a configuration table. This URL might be an absolute path or apath relative to the current request. Next， the Front Controller servlet must send the request to this JSP togenerate the view. Assume that the servlet variable request is assigned the current HttpServletRequestobject and the variable context is assigned the webapp’s ServletContext. Which code snippet of the FrontController servlet accomplishes this goal？（）