Set - 2

Question 6 :

Difference between GET and POST

Answer :

In GET your entire form submission can be encapsulated in one URL, like a hyperlink. query length is limited to 260 characters, not secure, faster, quick and easy.
In POST Your name/value pairs inside the body of the HTTP request, which makes for a cleaner URL and imposes no size limitations on the form's output. It is used to send a chunk of data to the server to be processed, more versatile, most secure.

Question 7 :

What is session?

Answer :

The session is an object used by a servlet to track a user's interaction with a Web application across multiple HTTP requests.

Question 8 :

What is servlet mapping?

Answer :

The servlet mapping defines an association between a URL pattern and a servlet. The mapping is used to map requests to servlets.

Question 9 :

What is servlet context ?

Answer :

The servlet context is an object that contains a servlet's view of the Web application within which the servlet is running. Using the context, a servlet can log events, obtain URL references to resources, and set and store attributes that other servlets in the context can use. (answer supplied by Sun's tutorial).

Question 10 :

Which interface must be implemented by all servlets?

Answer :

Servlet interface.