Javaweb

The include() method of RequestDispatcher

• Sends a request to another resource like servlet, jsp or html
• Includes resource of file like servlet, jsp or html
• Appends the request and response objects to the current servlet

What programming language(s) or scripting language(s) does Java Server Pages (JSP) support?

• VBScript only
• Jscript only
• Java only
• VBScript, Jscript and Java

A JSP is transformed into a(n):

• Java Applet
• Java Servlet
• Java Script

What is the key difference between using a <jsp:forward> and HttpServletResponse.sendRedirect()?

• forward executes on the server while sendRedirect() executes on the client
• forward executes on the client while sendRedirect() executes on the server
• The two methods perform identically
• None of these

Which of the following can not be used as the scope when using a JavaBean with JSP ?

• application
• response
• request
• session

What is wrong with the following code ? <% if( strPassword.equals("boss")) { <jsp:forward page="Welcome.jsp" flush="true"/> } else { } %>

• Unmatched bracket in for statement
• Flush attribute must be false
• Keyword 'file' should be used instead of 'page' in the action
• Actions cannot be used within scriptlet blocks

Choose the statement that best describes the relationship between JSP and servlets:

• Servlets are built on JSP semantics and all servlets are compiled to JSP pages for runtime usage
• JSP and servlets are unrelated technologies
• Servlets and JSP are competing technologies for handling web requests. Servlets are being superseded by JSP, which is preferred. The two technologies are not useful in combination
• JSPs are built on servlet semantics and all JSPs are compiled to servlets for runtime usage

Which of the following is true about Execution phase in JSP life cycle?

• Whenever a browser requests a JSP and the page has been loaded and initialized, the JSP engine invokes the _jspService() method in the JSP.
• The _jspService() method of a JSP is invoked once per request and is responsible for generating the response for that request.
• The _jspService() method of a JSP generates responses to all seven of the HTTP methods ie. GET, POST, DELETE etc.
• All of the above.

What is the use of <c:if> tag?

• It is used to check if jsp tag library is enabled or not.
• It evaluates an expression and displays its body content only if the expression evaluates to true.
• No tags in JSP

What is the use of <c:catch> tag?

• To catch any Throwable that occurs in its body and optionally exposes it.
• To catch the runtime error and redirect to error page.
• Both of the above.
• None of the above.