b) What is XML? Why is it required even though you have HTML? Create at least five instances of your friend’s data using the XML page. The list could contain name and date of birth of the friend. Additionally, each friend would have at least one phone number and address. Create DTD for the XML document you have created.

c) Describe concept of Document Object Model in the context of JavaScript. Describe how events are handled using JavaScript. prepare the program using JavaScript which displays the present time on a web page and increments it after every 10 seconds.
d) What are WAP and WML? Describe with the help of an ex. Describe the process of creating a web page for a mobile device along with ex.

problem 2:

a) Describe different types of client-server architectures. Describe the GET and POST methods of HTTP protocol? Why do you use these methods? Describe with the help of an ex each.

b) Create a JSP page which shows use of JSP Directives, Elements, Scriptlets, Expressions and variables. Create the web page using JSP which stores number of times a button is clicked on to the server.

c) What are cookies? Why are they used? How are they different to a session? Create the page which asks your name and creates a cookie about your name

d) What is JDBC? Why are they used? Create the web site using JSP to verify your login and password. The site must permit you to register, in case you do not have login name and password. Username and password should be stored in the database. On successful login, a welcome page must display.