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BUSI 240Introduction to Information Systems

Tuesday & Thursday 8:05am – 9:30am

Wyant Lecture Hall

Please sign the roster on the back table.

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Current Events – What’s going on?

Bill Gates's successor at Microsoft to retireThe Microsoft Corp executive who took over the role of chief software architect from Bill Gates is to step down, following a tenure in which the Windows-maker lost ground to Google and Apple. http://www.reuters.com/article/idUSTRE69H4Z320101019?type=technologyNews

Apple’s Jobs goes after Google, tablet rivalsIt’s not often Steve Jobs shows up on a routine earnings call. And when he showed up on Monday’s, he made a splash.

Coincidentally showing up right after the company’s shares racked up their largest post-earnings fall in recent memory, Jobs thrashed Google’s Android mobile operating system and a clutch of competitors rushing to stake out territory in the explosive tablet market he helped create. http://blogs.reuters.com/mediafile/2010/10/18/apples-jobs-

goes-after-google-tablet-rivals/

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Current Events – What’s going on?

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Current Events – What’s going on?

Internet users to exceed 2 billion this yearThe number of Internet users will surpass two billion this year, approaching a third of the world population, but developing countries need to step up access to the vital tool for economic growth, a United Nations agency said on Tuesday. http://www.reuters.com/article/idUSTRE69I24720101019?type=technologyNews

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Assignment #2 Due Tuesday, February 24th – before 8:05am

(correction from Tuesday’s slide) Submit via DropBox at online.apu.edu

Quiz #3

Covers Chapter 5 & 6 20 questions, 1 point per question Available Tuesday, February 22, 2011 at

9:30am Due Thursday, February 24, 2011 at 8:00am

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Mid-Term

Covers Chapter 1 thru 6 50 questions, 2 points per question Available Tuesday, March 1, 2011 at 9:30am Due Thursday, March 3, 2011 at 8:00am

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An Intranet

A network inside an organizationThat uses Internet technologies (such as Web

browsers and servers, TCP/IP protocols, HTML, etc.)

To provide an Internet-like environment within the organization

For information sharing, communications, collaboration and support of business processes

Protected by security measures Can be accessed by authorized users through

the Internet

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Enterprise Information Portal

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Extranet

Network links that use Internet technologiesTo connect the Intranet of a businessWith the Intranets of its customers, suppliers or

other business partners

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Extranet Uses

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The Origins of the Internet Project: Department of Defense’s Advanced Research

Projects Agency (DARPA) in 1969. Goal: develop a wartime digital communications network Specifications: The network must be able to quickly

reroute digital traffic around failed nodes. Worse Case Scenario: Be able to communicate

during/after nuclear attacks on multiple metropolitan areas

Users: Government offices and educational institutions

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The Origins of the Internet Initial Name: ARPANET First Node: UCLA 2nd & 3rd Nodes: UC Santa Barbara and University of

Utah Concept: the idea that there would be multiple

independent networks connected through an “Internetworking Architecture”.

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Timeline of the internet

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Challenges of building the Internet

Flexible and platform agnostic communication protocols did not exist

The internet would not be possible without a set of communication protocols called TCP/IP

TCP/IP was developed in 1972 by Robert Kahn and Vincent Cerf at Stanford Univ.

The basic premise of TCP/IP is to “join almost any networks together, no matter what their characteristics were/[are]”

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A Brief Summary of the Evolution of the Internet

1945 1995

Memex Conceived

1945

WWWCreated

1989

MosaicCreated

1993

A Mathematical

Theory of Communication

1948

Packet Switching Invented

1964

SiliconChip1958

First Vast ComputerNetwork

Envisioned1962

ARPANET1969

TCP/IPCreated

1972

InternetNamed

and Goes

TCP/IP1984

HypertextInvented

1965

Age ofeCommerce

Begins1995

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By January 2009The Internet Reached Two

Important Milestones:

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Internet Growth Trends

1977: 111 hosts on Internet 1981: 213 hosts 1983: 562 hosts 1984: 1,000 hosts 1986: 5,000 hosts 1987: 10,000 hosts 1989: 100,000 hosts 1992: 1,000,000 hosts 2001: 150 – 175 million hosts 2002: over 200 million hosts 2008 (July): over 500 million hosts By 2009 (January): over 600 million hosts By end of 2010, about 80% of the planet will be on the Internet

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100,000,000

200,000,000

300,000,000

400,000,000

500,000,000

600,000,000

700,000,000

Number of HostsAugust 1981 to January 2009

Internet HostsTop 10 Countries

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 United States 316,000,000

 Japan 39,909,000

 Germany 22,606,000

 Italy 17,702,000

 China 14,306,000

 France 14,256,000

 Australia 11,134,000

 Netherlands 10,983,000

 Mexico 10,653,000

 Brazil 9,573,000

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Statistics from the IITF Report The Emerging Digital Economy *

To get a market of 50 Million People Participating: Radio took 38 years TV took 13 years Once it was open to the General Public, The Internet

made to the 50 million person audience mark in just 4 years!!!

http://www.ecommerce.gov/emerging.htm Released on April 15, 1998

* Delivered to the President and the U.S. Public on April 15, 1998 by Bill Daley, Secretary of Commerce and Chairman of the Information Infrastructure Task Force

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Internet ApplicationsSurf and

E-mail

Internet Chat and

Discussion ForumsSocial Networks

Download and Computer

Search Engines

E-CommerceTransfer

Protocol (FTP) and Telnet

Popular Uses of the

Internet

Popular Uses of the

Internet

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Challenges for the future

TCP/IP, the underlying protocol that enables the internet has flawsThere are multiple proposals to fix the flaws

Study Predicts Internet Users Face Bandwidth Drought by the end of 2010Infrastructure investmentsProjected traffic patterns

VideoPeer-to-peerMobile computing

Telecommunications and Networks

Business value of networksThe Internet

Network components

Chapter

6a

McGraw-Hill/Irwin Copyright © 2007 by The McGraw-Hill Companies, Inc. All rights reserved.

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Network Concepts

NetworkAn interconnected chain, group or system

Number of possible connections on a network is N * (N-1)Where N = number of nodes (points of

connections on the network)Example, if there are 10 computers on a

network, there are 10 * 9 = 90 possible connections

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Metcalfe’s Law

The usefulness of a network equals the square of the number of users

On a small network, a change in technology affects technology only

On a large network like the Internet, a change in technology affects social, political and economic systems

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Telecommunications

TelecommunicationsExchange of information in any form (voice,

data, text, images, audio, video) over networks

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Trends in Telecommunications

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Open Systems

Information systems that use common standards for hardware, software, applications and networks

Internet networking technologies are a common standard for open systems

Connectivity: Ability of networked computers to easily access and

communicate with each other and share information Interoperability:

The ability of an open system to enable end user applications to be accomplished using different varieties of computer systems, software packages, and databases provided by a variety of interconnected networks

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Middleware

Any programming that serves to “glue together” two separate programs

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Digital Network Technologies

Rapid change from analog to digital network technologies

Analog: voice-oriented transmission, sound waves

Digital: discrete pulse transmissionDigital allows:

Higher transmission speedLarger amounts of informationGreater economyLower error ratesMultiple forms of communications on same

circuit

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Internet2

Next generation of the InternetHigh-performance networkIn use at 200 universities, scientific

institutions, communications corporations

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Business Value of Telecommunication Networks

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The Internet

Over 46 million servers (2004)710 – 945 million users (2004)No central computer systemNo governing bodyNo one owns it

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Internet Service Provider

ISPA company that specializes in providing easy

access to the InternetFor a monthly fee, you get software, user name,

password and accessISPs are connect to one another through

network access points

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Popular uses of the Internet

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Using the Internet for business

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Business value of the Internet

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An Intranet

A network inside an organizationThat uses Internet technologies (such as Web

browsers and servers, TCP/IP protocols, HTML, etc.)

To provide an Internet-like environment within the organization

For information sharing, communications, collaboration and support of business processes

Protected by security measures Can be accessed by authorized users through

the Internet

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Enterprise Information Portal

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Extranet

Network links that use Internet technologiesTo connect the Intranet of a businessWith the Intranets of its customers, suppliers or

other business partners

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Extranet Uses