Servlet Advance Understanding Set 2

What are the true sentences about Session-Id?

Session-IDs are usually stored in the cookies, URLs and hidden fields of Web pages.

A session-ID is an unique identification

It is transmitted between the client and the server

All of these

Which of these are common mechanisms used for session tracking?

URL- rewriting

RequestDispatcher

SSL sessions

Which of these statements are true about GenericServlet?

Generic Servlet is an abtract class

A GenericServlet has a service() method to handle requests.

Genric Servlet extends HttpServlet and override doGet() method

Generic servlet implements Servlet Interface and over-rides life-cycle method

Which statement is true about HttpServlet?

This is a abstract class

HttpServlet extends GenericServlet and adds support for doGet(), doPost()

Service method defined here only take http specific request

All of these

What are the new features added in Servlet 2.5? Choose correct answers.

Support for annotations

Several web.xml conveniences

Loading the class

All of the above

Servlet interface contains LifeCycle methods . True or false?

yes

Which of these protocols are supported by HttpServlet?

ftp

http

https

smtp

How can we makexisting session be invalidated?

<session-config>
<session-timeout>40</session-timeout>
</session-config>

By setting programmatically like
public void setMaxInactiveInterval(int interval)

session never expires.

Non of these

What are the correct statements about filter?

It checks Security

It modifies the request or response

It is used for Logging and auditing

All of these

When we should use doPost() method? choose the correct answers.

If data is sensitive

Data is greater than 1024 characters

If your application don't need bookmarks

If your application should be faster