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WELCOME TO THE SESSION ON MIS CH-8:THE INTERNET & THE NEW IT INFRASTRUCTURE Dr. Engr. Jnan Ranjan Sil, PHF BSc.Engg(civil), MBA(HRM), Doctor of Business Administration, PhD in Civil Engg.

THE INTERNET & THE NEW IT INFRASTRUCTURE Objectives: • As a manager, you will need to know how to maximize the benefits of Internet Technology in your firm’s information technology infrastructure. • You will be able to answer the following questions:• What is the new IT infrastructure for business? • Why is connectivity so important in this infrastructure? • How does the Internet work? • How can organizations benefit from using WWW & Web technology? • What management problems are raised by the new IT infrastructure?

The new Information Technology Infrastructure:

Communications, phones

Communications, computers


Laptop Mainframe computer



The new Information Technology Infrastructure: • The new IT Infrastructure links desktop workstations, network computers, LANs, and server computers in an enterprise network so that information can flow freely throughout different parts of the organization. • The enterprise network may also be linked to kiosks, point-of-sale(POS) terminals, PDAs, digital cell phones and PCs, and other mobile computing devices as well as to the internet using public infrastructure. • Customers, suppliers, and business partners may also be linked to the organization through this new IT infrastructure.

• Enterprise networking: An arrangement of the organization’s hardware, software, network, and data resources to put more computing power on the desktop and create a company-wide network linking many smaller networks. • Connectivity: A measure of how well computers and computerbased devices communicate and share information with one another without human intervention. • Models of connectivity: There are different models for achieving connectivity in telecommunication networks. The TCP/IP model was developed by the US Department of Defense in 1972 and is used in the internet. Its purpose was to help scientists link disparate computers. • TCP/IP( Transmission Control Protocol/Internet Protocol): US Deptt. Of Defense reference model for linking different types of computers and networks, used in the internet.

TCP/IP has a five –layer reference model. These are 1. Application 2. Transmission Control Protocol(TCP) 3. Internet Protocol(IP) 4. Network Interface 5. Physical Net Host A Host B Applications Transport (TCP)


Identical message Identical packet

IP Identical datagram Network Interface

Transport(TCP) IP Network Interface

Identical frame Physical net

What is an internet and what do you meant by ISP? • INTERNET: International network of networks that is a collection of hundreds of thousands of private and public networks. • An internet Service Provider(ISP) is a commercial organization with a permanent connection to the internet that sells temporary connections to subscribers. • Individuals also can access the internet through such popular online services as America Online(AOL) and Microsoft network(MSN).

INTERNET TECHNOLOGY & SERVICES: • The internet is based on client/server technology. Individuals using the internet control what they do through client applications, such as Web browser software. All data, including e-mail messages and Web pages, are stored on servers. • A client uses the internet to request information from a particular Web server on a distant computer and the server sends the requested information back to the client via internet. • Internet Protocol Address: four-part numeric address indicating a unique computer location on the internet. • http// protocol domain • Domain name: the name identifying a unique node on the internet.

• Usenet: Forum in which people share information and ideas on a defined topic through large electronic bulletin boards where anyone can post messages on the topic for others to see and to which others can respond.

• Telnet: Network tool that allows someone to log on to one computer system while doing work on another. • Chatting: Live, interactive conversations over a public network. Chatting allows two or more people who are simultaneously connected to the internet to hold live, interactive conversations. • VoIP( Voice over IP) : Voice transmission using the Internet Protocol in a private intranet or WAN.

• http( hypertext transport protocol): The communications standard used to transfer pages on the Web. Defines how messages are formulated and transmitted.

• Home page: A world Wide Web text and graphical screen display that welcomes the user and explains the organization that has established the page. • Search engine: A tool locating specific sites or information on the internet. • WAP( Wireless Application Protocol): System protocols and technologies that lets cell phones and other wireless devices with tiny displays, lowbandwidth connections, and minimal memory access Web-based information and services.


Management Information Systems