IT430- E-Commerce Midterm Past VU papers

MIDTERM EXAMINATION

Spring 2009

IT430- E-Commerce (Session - 4)

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Question No: 1 ( Marks: 1 ) - Please choose one

In datalink layer, data packets are placed inside

► Data frames

► Data boxes

► Data streams

► None of these

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Question No: 2 ( Marks: 1 ) - Please choose one

Which of these is the correct HTML code for creating a reset button?

►

►

►

►

Question No: 3 ( Marks: 1 ) - Please choose one

…..tag is used into …….tag because a row contains multi cells and to fill up

these cells with data.

► TD…… TR

► TR…… TD

► TD…… TG

► TG…… TR

Question No: 4 ( Marks: 1 ) - Please choose one

Individuals who write programs or manipulate technologies to gain unauthorized

access to computers and networks are --------------- .

► administrators

► experts

► hackers

► coders

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Question No: 5 ( Marks: 1 ) - Please choose one

Which tag is used for the hidden fields?

►

►

►

►

Question No: 6 ( Marks: 1 ) - Please choose one

What is a correct way of referring to a stylesheet called "mystyle.xsl" ?

► <?xml-stylesheet type="text/xsl" href="/mystyle.xsl" ?>

►

►

► <?stylesheet type="text/xsl" href="/mystyle.xsl" ?>

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Question No: 7 ( Marks: 1 ) - Please choose one

Which of them is NOT a predefined object?

► Document

► Date

► Loop

► Array

Question No: 8 ( Marks: 1 ) - Please choose one

Which of these is not a comparison operator?

► <

► >

► =

► !=

Question No: 9 ( Marks: 1 ) - Please choose one

Var d = new date()

Which of the following is correct about the d variable?

► instance of new

► instance of Date() method

► instance of Date object

► Simple Variable

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Question No: 10 ( Marks: 1 ) - Please choose one

When you declare a variable within a function, the variable can only be

accessed within that function. When you exit the function, the variable is

destroyed. These variables are called

► Local Variables

► Global Variables

► Local and Global

► None of the above

Question No: 11 ( Marks: 1 ) - Please choose one

Which of the following , is condition part of given For loop

for (i = 0; i <= 5; i++).

► i=0.

► i++.

► i<=5.

► (i = 0; i <= 5; i++).

Question No: 12 ( Marks: 1 ) - Please choose one

What is the correct JavaScript syntax to write "Virtual University of Paistan"?

► document.write("Virtual University of Paistan ")

► ("Virtual University of Paistan ")

► " Virtual University of Paistan "

► response.write("Virtual University of Paistan ")

Question No: 13 ( Marks: 1 ) - Please choose one

Which of the following is NOT valid HTML code line?

► ,84%">

► ,84%">

►

► ,50%” rows=”16%,84%”>

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Question No: 14 ( Marks: 1 ) - Please choose one

CSS is a breakthrough in Web design because it allows developers to control

the---------

► Processing speed on client side

► Data grid view on client side

► Style and layout of home page.

► Style and layout of multiple Web pages

Question No: 15 ( Marks: 1 ) - Please choose one

Which HTML tag is used to define an internal style sheet?

►

►

►

►

Question No: 16 ( Marks: 1 ) - Please choose one

What is the correct HTML tag for adding a background color?

► yellow

►

►

► None

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Question No: 17 ( Marks: 1 )

What does this mean?

padding-right

padding-right – adds space to the right of the content

Question No: 18 ( Marks: 1 )

Do you agree or not that using Cascading Style Sheets one can apply an image

to sections of one‟s

page or even to individual words.

Yes! I agree, using CSS one can apply his/her defined design, image or

wording to muliple pages of his/her website.

Question No: 19 ( Marks: 2 )

Suppose, there is an applet at "http://www.vu.edu.pk/demo.class". Write the code

to include this applet in your web page.

Question No: 20 ( Marks: 3 )

What do you think, is there any difference between Static and Dynamic IP

Address assignment? Discuss.

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Question No: 21 ( Marks: 5 )

What is cryptography? What techniques are used for cryptography?

Cryptography is the technique of converting a message into unintelligible

or non-understandable form such

that even if some unauthorized or unwanted person intercepts the message

he/she would still not be able to

make any sense out of it. Cryptography is thousands of years old.

Techniques used for cryptography Substitution In substitution we replace

each letter in the message with

another to make the message non-understandable. For example, each letter

“a” in the message can be

replaced with letter “d” and letter “b” with letter “e” and so on.

Transposition It is based on scrambling the

characters in a message. A transposition system may first write a message

into a table row by row then the

message can be read and rewritten column by column to make it

scrambled.

Question No: 22 ( Marks: 10 )

Analyze the following given code showing some Cascading Style Sheets

tags and explain its lines one by one.

<html>

<head>

h1 {text-decoration: overline}

h2 {text-decoration: line-through}

h3 {text-decoration: underline}

a {text-decoration: none}

<body>

This is header 1

This is header 2

This is header 3

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