All of your JSPs need to have a link that permits users to email the web master. This web application islicensed to many small businesses， each of which have a different email address for the web master. Youhave decided to use a context parameter that you specify in the deployment descriptor， like this：42.<context-param>43.<param-name>webmasterEmail</param-name>44.<param-value>master@example.com</param-value>45.</context-param>Which JSP code snippet creates this email link？（）

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？ （）

You are building your own layout mechanism by including dynamic content for the page’s header and footersections. The footer is always static， but the header generates the <title> tag that requires the page name tobe specified dynamically when the header is imported.Which JSP code snippet performs the import of theheader content？（） 

Click the ’Select and Place’ button.Place the events in the order they occur.

Which three are true about servlet filters？（）

Which element of a web application deployment descriptor  element is required？（）

Click the ’Select and Place’ button.Place the events in the order they occur.

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

Click the ’Select and Place’ button.Place the events in the order they occur.

Which two are valid and equivalent？（）