Discuss the WAP model. Explain the following WML elements with the help of an example

• element 
• Anchor element
• Select elements

Write and demonstrate (at the time of viva) JavaScript code that displays the message "Let us try JavaScript" and changes this text to "Write Programs using JavaScript" after some time. You may use event handling. Make suitable assumptions, if any.

A store maintains the list of its Customers using XML. Each Customer is assigned a unique Customer Identifier (CustID) of 6 digits. This CustID is used as an attribute in XML document. The document stores the customer name, customer address (at least one address is required), customer phones (at least one phone number is required) and customer profession (optional). Create an XML documents containing information of five such customers. Also create the DTD to verify the XML document created by you.

Using table and lists create two web pages, first displaying the schedule of assignments that are to submitted by the students of BCA first year. This first web page should include the course code and course name of the courses of BCA first year for which assignments are to be submitted, the assignment number, the last date of submission of assignment and the date and time of viva-voce for the students. The second page should display an unordered list, displaying the suggestions for writing assignment responses. You should use

tags, wherever needed, and create an internal CSS file, which formats the web pages as follows: (You must submit the HTML and CSS code and the display of pages in a browser)

(i) Table must have a proper heading. The content of the table headings should be in Bold.

(ii) The table heading should be shaded and every alternate row of table should have a light green as the fill colour. The background of the table should be light yellow.

(iii) The font of the unordered list should be "Times New Roman" with font size of 11 points.

(iv) You must demonstrate how changes in CSS can change the display at the time of Viva.

Create a registration form, using HTML for opening an email account with an organisation. The form asks for the following information:

• Proposed email id (it can be of the type xxxx@abc.in)
• Proposed password (should have a minimum size of 6 characters)
• Name of the person requesting for email account
• City and State of the person requesting for email account (both should be selected from drop down lists, default value for City should be Jaipur and State be Rajasthan)
• desired email services, which can be selected from "Basic Service" or "Advanced Service".
• The form should include a SUBMIT button.

You must also create a CSS file for this form. This CSS file should define font family; a font size of 16 points for headings, and font size of 12 points for normal text; font colour should be dark green for the headings and dark blue for normal text. The background colour of the form should be light grey. Also write the code using JavaScript that validates the data entered in the email id and password fields. Submit the HTML code, JavaScript code and display of form in a browser. You must demonstrate the form at the time of viva.

What is Web 2.0? How is it different to Web 3.0? What is the basic concept of Web 4.0? Explain the term WWW and its uses. Explain the term "Blogging". List any 10 protocols/software that can be used as Web 2.0 technologies.

What is the main functions of the Dynamic Host Configuration Protocol? How does it work? Where is the DHCP server located?

Discuss the various disk management functions . What are the tasks followed for secure disk management? Elaborate.

Explain the commands being used in Linux environment for problem diagonosis and trouble shooting.

What is the need for remote administration? Discuss the common services for which the remote administration is used.Discribe any three remote administration tools.

Discuss the standard socket types and its corresponding protocols. Explain using the proper syntaxes and examples , the system calls used by the client and a server to establish connections before data transfer.

(a) Write an algorithm for TCP client and a server programs using the following specifications and explain the libraries and commands used in the algorithm:

• A TCP client establishes the connection.After the connection is established it sends an integer number to the server.
• A TCP server which can handle maximum four clients ,accept the numbers sent by the clients ,calculates whether the number sent by the clients is a prime number or not and finally sends the reply to the respective client.

What is the role of DNS in Internet ? Explain the steps followed in the domain name resolution with the help of a diagram.

What is the significance of the following TCP header fields:

• Sequence Number
• Reserved bits
• Window Size
• Checksum
• Urgent Pointer

Draw a TCP header diagram and show the number of bits required for each field. Which field indicates the length of the TCP header? Explain with an example.

How many bits are needed for defining Net IDs and Host IDs of Class A, Class B and Class C respectively?

What is the address space in a system with 32 bit addresses?

Calculate subnet address if the IP address and the subnet mask are given as shown below:

Explain the concept of subnetting, default mask and subnet mask.

Define classful addressing and discuss problems associated with it.