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PROGRAM-MCA(REVISED
FALL 2012)
SEMESTER-V
SUBJECT CODE &
NAME-MCA5010-WEB TECHNOLOGIES
CREDIT-4
BK ID-B1547
MAX. MARKS-60
1. Describe the
following protocols:
a) IP
b) HTTP
c) FTP
d) SMTP
Answer.
a) IP
IP is the protocol that controls
how data moves around on the network. After TCP divides the message into
segment, IP labels them with source and destination. These packets are now
called IP datagrams. IP is the primary protocol in the Internet Layer of the
Internet protocol suite and has the task of delivering datagrams from the
source host to the destination host solely based on their addresses. IP also
takes care of sending the datagrams by determining the route. These datagrams
may hop several networks before reaching the destination.
2. Differentiate between HTML and DHTML.
Describe any four Advantages of DHTML.
3*2+4
Answer.
Differences
between HTML and DHTML
Dynamic HTML is an extension of
HTML that enables, among other things, the inclusion of small animations and
dynamic menus in Web pages. DHTML code makes use of style sheets and
JavaScript. When you see an object, or word(s), on a webpage that becomes highlighted,
larger, a different color, or a streak runs through it by moving your mouse
cursor over it is the result of adding a DHTML effect. This is done in the
language coding and when the file of the webpage was saved it was saved as the
.dhtml format instead of .htm or .html. DHTML sites are dynamic in nature.
DHTML uses client side scripting to change variables in the presentation which affects
the look and function of an otherwise static page. DHTML characteristics are
the functions while a page is
3. List and explain
the Components of XML processor. 4*2.5
Answer.
Components of
XML processor
a) Parser
Every XML processor has a parser.
An XML parser converts an XML document into an XML DOM object - which can then
be manipulated with a JavaScript. The
parser's job is to translate XML markup and data into a stream of bite-sized
nuggets, called tokens, to be used for processing. A token may be an element
start tag, a string of character content, the beginning delimiter of a
processing instruction, or some other piece of markup that indicates a change
between regions of the document.
4. Describe the
procedure of fetching data from XML to HTML. Give an example. 6+4
Answer.
Procedure of
fetching data from XML to HTML
The process of fetching data from
an XML files to be filled in an HTML table, using DSO (Data Source Object) and
JavaScript. DSO is an object that operates like a database on the client side.
It will accept information that is organized in a certain way and will
manipulate it with its own database engine.
DSO allows data binding to HTML
table elements. When a table element is bound there is no need to write out the
code for individual rows for each record in the recordset. The DSO will
automatically do this for each record. To bind the XML data to an HTML table,
add a datasrc attribute to the table element, and add the datafld attribute to
the span elements inside the table data.
5. Describe five
different categories of PHP Operators. 5*2
Answer.
Categories of
PHP Operators
In all programming languages,
operators are used to manipulate or perform operations on variables and values.
There are many operators used in PHP, so we have separated them into the
following categories to make it easier to learn them all.
·
Assignment
Operators
·
Arithmetic
Operators
·
Comparison
Operators
·
String
Operators
·
The
Concatenation Operator
6. Describe about
ASP. 10
Answer.
ASP
The page on the server called by
the JavaScript is an ASP file called AJAX server page. The server file could
easily be rewritten in PHP, or some other server languages. Look at the example
in PHP. The source code in "getcustomer.asp" runs a query against a
database, and returns the result in an HTML table:
<%
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