SCWCD(310-083)單項選擇題每日一練(2019.01.19)

You have created a servlet that generates weather maps. The data for these maps is calculated by aremote host. The IP address of this host is usually stable， but occasionally does have to change as thecorporate network grows and changes. This IP address used to be hard coded， but after the fifth change tothe IP address in two years， you have decided that this value should be declared in the deploymentdescriptor so you do NOT have the recompile the web application every time the IP address changes.
Which deployment descriptor snippet accomplishes this goal？（）

Assume a JavaBean com.example.GradedTestBean exists and has two attributes. The attribute name is oftype java.lang.String and the attribute score is of type java.lang.Integer. An array of com.example.
GradedTestBean objects is exposed to the page in a request- scoped attribute called results. Additionally，an empty java.util.HashMap called resultMap is placed in the page scope. A JSP page needs to add the firstentry in results to resultMap， storing the name attribute of the bean as the key and the score attribute of thebean as the value.
Which code snippet of JSTL code satisfies this requirement？（）

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

3. 4.<%=> costs <%=>  <%=><%=> What is the response output of this JSPpage code snippet？（）

You need to create a JSP that generates some JavaScript code to populate an array of strings used on theclient-side.
Which JSP code snippet will create this array？（）