Given： http：//com.example/myServlet.jsp？num=one&num=two&num=three.
Which two produce the output"one， two and three"？（）
A.${param.num[0]，[1] and [2]}
B.${paramValues[0]，[1] and [2]}
C.${param.num[0]}， ${param.num[1]} and ${param.num[2]}
D.${paramValues.num[0]}， ${paramValues.num[1]} and ${paramValues.num[2]}
E.${paramValues["num"][0]}， ${paramValues["num"][1]} and ${paramValues["num"][2]}
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Given：
11.<% java.util.Map map = new java.util.HashMap（）；
12.request.setAttribute（"map"， map）；
13.map.put（"a"， "true"）；
14.map.put（"b"， "false"）；
15.map.put（"c"， "42"）； %>
Which three EL expressions are valid and evaluate to true？（）
A.${not map.c}
B.${map.d or map.a}
C.${map.a and map.d}
D.${map.false or map.true}
E.${map.a and map.b or map.a}
Given：
11.<%
12.request.setAttribute（"vals"， new String[]{"1"，"2"，"3"，"4"}）；
13.request.setAttribute（"index"， "2"）；
14.%>
15.<%-- insert code here --%>
Which three EL expressions， inserted at line 15，are valid and evaluate to "3"？（）
A.${vals.2}
B.${vals["2"]}
C.${vals.index}
D.${vals[index]}
E.${vals}[index]
F.${vals[vals[index-1]]}
A.Form-based logins should NOT be used with HTTPS.
B.When using Basic Authentication the target server is NOT authenticated.
C.J2EE compliant web containers are NOT required to support the HTTPS protocol.
D.Web containers are required to support unauthenticated access to unprotected web resources.
Given the two security constraints in a deployment descriptor：
101.<security-constraint>
102.<!--a correct url-pattern and http-method goes here-->
103.<auth-constraint><role-name>SALES</role-name></auth- . <auth-constraint>
104.<role-name>SALES</role-name>
105.</auth-constraint>
106.</security-constraint>
107.<security-constraint>
108.<!--a correct url-pattern and http-method goes here-->
109.<!-- Insert an auth-constraint here -->
110.</security-constraint>
If the two security constraints have the same url-pattern and http-method
which two inserted independentlyat line 109，will allow users with role names of either SALES or MARKETING to access this resource？（）
A.<auth-constraint/>
B.<auth-constraint><role-name>*</role-name></auth-constraint>
C.<auth-constraint><role-name>ANY</role-name></auth-constraint>
D.<auth-constraint><role-name>MARKETING</role-name></auth-constraint>
A.HTTP Basic Authentication
B.Form Based Authentication
C.HTTP Digest Authentication
D.HTTPS Client Authentication
最新試題
In which three directories， relative to a web application’s root， may a tag library descriptor file reside whendeployed directly into a web application？（）
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 thedate of birth and today’s date. In one of your JSPs you need to print a special message to clients within theage group of 25 through 35.Which two EL code snippets will return true for this condition？ （）
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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.
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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？（）
Which is true about the web container request processing model？（）
Given a web application in which the request parameter productID contains a product identifier.Which twoEL expressions evaluate the value of the productID？（）