Transcript Slide 1 - Binus Repository

Introduction to Information Technology
2nd Edition
Turban, Rainer & Potter
© 2003 John Wiley & Sons, Inc.
The Internet, Intranets, and Extranets
(continue …)
Prepared by:
Roberta M. Roth, Ph.D.
University of Northern Iowa
Introduction to Information Technology, 2nd Edition
Turban, Rainer & Potter
© 2003 John Wiley & Sons, Inc.
7-1
Internet Challenges
 New Technologies
 Adopted by vendors more rapidly than users and
customers can implement them
 Web developers cannot assume that users can run
their innovations successfully
 Internet Regulation
 Technical organizations (e.g., World Wide Web
Consortium) develop standards governing the
Internet’s functionality
 These organizations are not formally charged in any
legal or operational sense with responsibility for the
Internet
 How to control controversial content on the Web?
Introduction to Information Technology, 2nd Edition
Turban, Rainer & Potter
© 2003 John Wiley & Sons, Inc.
7-2
Internet Challenges (continued)
 Internet Expansion
 Tremendous Internet traffic growth has strained some
elements of the network
• Slower retrieval times
• Unreliable data transmission
• Denial of service by overloaded servers
 Approaches to overcoming this congestion include
• Improved hardware technology
• Improved Web management software
Introduction to Information Technology, 2nd Edition
Turban, Rainer & Potter
© 2003 John Wiley & Sons, Inc.
7-3
Internet Challenges (continued)
 Internet Privacy - Web sites collect information with and
without consumers’ knowledge
 Cookie - small data file placed on users’ hard drives when a
site is first visited. Collects data on pages visited and content
viewed.
 Three potential approaches to the privacy issue
• Government lets groups develop voluntary privacy standards;
does not take any action now unless real problems arise
• Government recommends privacy standards for the Internet;
does not pass laws at this time
• Government passes laws now for how personal information
can be collected and used on the Internet
 Financial transaction security also a concern
Introduction to Information Technology, 2nd Edition
Turban, Rainer & Potter
© 2003 John Wiley & Sons, Inc.
7-4
Intranets
 A private network that uses Internet
software and TCP/IP protocols
Provide employees with easy access to
corporate information
Used to deploy corporate applications
• Examples – policies and procedures manuals;
human resource forms; product catalogs
Security is a concern
• Security measures include – public key security,
encryption, digital certificates, firewalls
Introduction to Information Technology, 2nd Edition
Turban, Rainer & Potter
© 2003 John Wiley & Sons, Inc.
7-5
Extranets
 An extension of an intranet to selected outside
business partners, such as suppliers, distributors,
and key customers
 Provide business partners with easy access to corporate
information and easy collaboration
 Security
 Critical to prevent unwanted entry into internal systems
 Virtual private networks (VPNs) are often used to add
security to Internet communication
Introduction to Information Technology, 2nd Edition
Turban, Rainer & Potter
© 2003 John Wiley & Sons, Inc.
7-6
Extranets (continued)
 Extranet configurations
 One company sets up a Extranet for its dealers,
customers, or suppliers
 Companies within an industry set up a collaborative
Extranet for mutual benefit
 Several companies collaborate over an Extranet for
joint venture
 Benefits include –
 Lower communication costs; better communication;
improved order entry and customer service;
improvement in business effectiveness
Introduction to Information Technology, 2nd Edition
Turban, Rainer & Potter
© 2003 John Wiley & Sons, Inc.
7-7
Other Web-based Applications
 Enterprise Information Portals
 Users have single point of access to internal and
external stored information
 Mobile Internet
 Use of wireless communication telecommunication
devices to access Web-based applications
Introduction to Information Technology, 2nd Edition
Turban, Rainer & Potter
© 2003 John Wiley & Sons, Inc.
7-8
Chapter Summary
 Internet is a network of network
 Internet provides communication and information
retrieval services, as well as the World Wide Web
 The World Wide Web enables a huge variety of
applications for businesses, including intranets and
extranets
 Many challenges exist when using the WWW,
including congestion, privacy, and security
Introduction to Information Technology, 2nd Edition
Turban, Rainer & Potter
© 2003 John Wiley & Sons, Inc.
7-9
Copyright © 2003 John Wiley & Sons, Inc. All rights reserved. Reproduction
or translation of this work beyond that permitted in Section 117 of the 1976
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omissions, or damages, caused by the use of these programs or from the
use of the information herein.
Introduction to Information Technology, 2nd Edition
Turban, Rainer & Potter
© 2003 John Wiley & Sons, Inc.
7-10