Lecture E-Commerce - Chapter 5: The internet and the web (part III)

CSC 330 E-Commerce
Teacher

Ahmed Mumtaz Mustehsan
GM-IT CIIT Islamabad

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Virtual Campus, CIIT
COMSATS Institute of Information Technology

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The Internet and The Web

Chapter-2
Part-III

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Wi-Fi Technologies a Review (2G)

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Wi-Fi Technologies a Review (2.5 G)

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Wi-Fi Technologies a Review (4G)
4G
Long Term
Evolution LTE

Upto 100-300
Mbps

True Broadband
on Cell phone

At&T

WiMax

72 Mbps

Alternate to LTE
wide area
network

Clearwise/Sprint

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Benefits of Internet II Technologies
2. Latency solutions:
 diffserv (differentiated quality of service)
 Assigns different levels of priority to packets
depending on type of data being transmitted. e.g.
video data needs priority.
 Video on Demand (VoD) will be possible for every

client.
3. Guaranteed service levels and lower error rates
 possible to purchase the right to move data through
the network at a guaranteed speed in return for
higher fees.
 Improved capacity and packet switching will inevitably
impact quality of data transmissions, reducing error
rates and boosting customer satisfaction.
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Benefits of Internet II Technologies
4. Declining Costs
As the Internet pipeline is upgraded, the availability of
broadband service will expand beyond major metropolitan
areas, significantly reducing the costs of access.
More users means lower cost, as products and
technology catch on in the mass market.
Both broadband and wireless service fees are expected
to decline as geographic service areas increase, in fact
due to competition for the business.

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Bandwidth Demand of various web Applications

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Development of the Web
1989–1991: Web invented
Tim Berners-Lee at CERN
HTML, HTTP, Web server, Web browser
1993: Mosaic Web browser w/GUI



Andreessen and others at NCSA
Runs on Windows, Macintosh, or Unix
1994: Netscape Navigator,







First commercial Web browser
Andreessen, Jim Clark

1995: Microsoft Internet Explorer

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Some initial products of the World Wide Web
Mosaic
Web browser with a graphical user interface (GUI)
that made it possible to view documents on the Web
graphically.
Universal computing
The sharing of files, information, graphics, sound,
video, and other objects across all computer platforms
in the world, regardless of operating system
Netscape Navigator
The first commercial Web browser.

Internet Explorer
Microsoft’s Web browser

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Hypertext
 Text

formatted with embedded links

◦Links connect documents to one another, and to
other objects such as sound, video, or animation
files
 Uses

Hypertext Transfer Protocol (HTTP) and URLs to
locate and transfer resources on the Web
Example URL
/>
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Markup Languages
Generalized Markup Language (GML)—1960s
The concept behind document formatting was
actually first floated in 1960
Standard Generalized Markup Language (SGML) early
GML,1986
The purpose of SGML was to help very large
organizations format and categorize large collections of
documents and run independent of any s/w program
Hypertext Markup Language (HTML)
one of the next generation of GMLs that is relatively
easy to use in Web page design. HTML provides Web
page designers with a fixed set of markup “tags” that
are used to format a Web page
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Markup Languages
eXtensible Markup Language (XML)

a markup language specification developed by the
W3C (World Wide Web Consortium)
Data

and Tags designed to describe data are
provided/labled by the users.

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Web Servers and Web Clients
Web server software:
Enables a computer to deliver Web pages to clients on networks
that request this service by sending an HTTP request examples:
Apache and Microsoft IIS. The Basic capabilities include:
Security services:
◦ consist mainly of authentication services that verify that the
person trying to access the site is authorized to do so.
FTP:
◦ allows users to transfer files to and from the server as per
permission granted.
search engine
◦ enable users to search the entire Web for particular documents,
◦ enable indexing of the site’s Web pages and content, and permit

easy keyword searching of the site’s content.
Data capture
◦ monitoring site traffic, who visited the site, how long , the date
and time of each visit, and which specific pages were accessed.
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Web Servers and Web Clients
Web server
Can refer to Web server software or physical server
Specialized servers: database servers, ad-servers, mail

video server, etc.
Database server ; server designed to access specific
information with a database.
Ad server: server designed to deliver targeted banner
advertisments
Mail server: server that provides e-mail messages
Video server: server that serves video clips

server,

Web client:
Any

computing device attached to the Internet that is capable of
making HTTP requests and displaying HTML pages. most
commonly a Windows PC or Macintosh
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Web Browsers
 Primary

purpose to display Web pages

 Internet

Explorer (67%) and Firefox (23%) dominate
the market

 Other

browsers include:
◦Netscape
◦Opera
◦Safari (for Apple)
◦Google’s Chrome

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The Internet and Web Features that Promote
e commerce
Internet and Web features on which the foundations of
e-commerce are built include:
E-mail
Instant messaging
Search engines
Intelligent agents (bots)
Online forums and chat
Streaming media
Cookies

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E-mail
 Most

used application of the Internet

 Uses

series of protocols for transferring messages
with text and attachments (images, sound, video clips,
etc.,) from one Internet user to another

 Most

of the marketing campaigns runs on e-mail so email can be an effective marketing tool.

 Attachment:

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a file inserted within an e-mail message

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Instant Messaging

 Displays

words typed on a computer almost instantly,
and recipients can then respond immediately in the
same way

 Different

proprietary systems offered by AOL, MSN,
Yahoo, and Google

 Meebo,

Digsby: allow users to communicate across
platforms of messengers

 Businessmen

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use IM as a client support.

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Search Engines

 Identify

Web pages that match queries based on
one or more techniques
◦Keyword indexes, page ranking

 Also

serve as:

◦Shopping tools
◦Advertising vehicles (search engine marketing)
◦Tool within e-commerce sites
 Outside

activity

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of e-mail, most commonly used Internet

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How Google Works

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Top Five search Engines

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Intelligent Agents (Bots)
 Software

programs that gather and/or filter
information on a specific topic and then provide a
list of results
◦Search bot
◦Shopping bot
◦Web monitoring bot
◦News bot

◦Chatter bot

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Intelligent Agents (Bots)

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