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AP/ADMS 2511

ManagementInformation Systems

Session 5 Chapters: 4 & 7

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Network Infrastructure, The Internet andNetwork Applications

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Session 5

(Chapters 4 and 7) Learning Objectives1 Describe the hardware, software and standards that

comprise modern networks

2 Explain the telecommunications and networktechnologies that comprise a telecommunicationssystem and that support the Internet

3 Discuss the origins and potential future of the Internet

4 Discuss the main applications of network technologiesin businesses for the purposes of discovery,

communication and collaboration5 Assess the impact of network technologies on e-

learning, distance learning and telecommuting

6 Analyze the impact of Web 2.0 technologies andapplications on organizations

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Types of Networks

A computer network is a system that

connects computers via communicationsmedia so that data can be transmittedamong them.

Local area networks

Wide are network

Value-added network Enterprise network

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Local Area Network (LAN)A local area network (LAN) is a computer network covering a

small physical area, like a home, office, or small group ofbuildings, such as a school, or an airport.

Video: Definition of LAN:http://www.youtube.com/

watch?v=JvYaoCJC1ks

What type ofNetworks does aLibrary use?

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Wide Area Network (WAN)A wide area network (WAN) is a computer network that coversa broad area (i.e., any network whose communications linkscross metropolitan, regional, or national boundaries).

This is in contrast with

personal area networks (PANs),local area networks (LANs),

campus area networks (CANs),metropolitan area networks (MANs)

which are usually limited

to a room, building, campus

or specific metropolitanarea (e.g., a city) respectively.

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Example of WAN in a hotel chain

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Enterprise NetworkEnterprise network:the entire network ofan organization,

usuallyconsisting of

multiplelocal area networksand multiple widearea networks.

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The value added network (VAN)

One important type of WAN is the valueadded

network (VAN).

VANs are private, dataonly networks managed by

outside third parties that providetelecommunication and computing services tomultiple organizations.

Many companies use VANs to avoid the expensesof creating and managing their own networks.

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Session 5




3 Discuss the origins and potential future of the Internet4 Discuss the main applications of network technologies

in businesses for the purposes of discovery,




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Components of a

Telecommunications System Computers

I/O devices

Processors modem,multiplexer, bridge,gateway, router

Software Communications

channels cables,telephone lines

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Communications Media and Channels

Twisted-pair wire: most prevalent formof communications wiring; consists ofstrands of copper wire twisted in pairs.

Coaxial cable: insulated copper wire

used to carry high-speed data traffic andtelevision signals. (Share line therefore whenlarge # of users it may slow down the access speed)

Fiber-Optic, Made of light-conductingglass transmitting pulses of light. It hadvery high bandwidth and is used in highspeed backbones

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Video about laying cable on the ocean bed:http://www.youtube.com/watch?v=btC3KmNi4wo

Video about making fibre optic cable for underseas:

http://www.youtube.com/watch?v=KulqAHJ16UQ

Communications Media and Channels

What telecommunications transmission media

should our organization use?

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Specific communications channels(Table 4.1, p. 108)

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Network Services (Pg.110)

Integrated Services Digital Network (ISDN):An international communications standard for sending

voice, video, and data over digital telephone lines ornormal telephone wires

Digital subscriber line (DSL):

Technologies that provide Internet access by transmittingdigital data over the wires of a local telephone network

Cable modems

Asynchronous transfer mode (ATM) Synchronous optical

network (SONET)

T-Carrier system: T1, T2, T3, T4 line

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Session 5





in businesses for the purposes of discovery,




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The Internet

Began as a U.S. Dept. of Defense network calledARPANET

Linked universities and scientists

No one owns the Internet

It has no formal management organization

http://www.youtube.com/watch?v=d3VccCRiP98

History of the Internet video:

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Accessing the internet

Connecting via an online service provider

ISP

Connection methods? Interesting article:

http://www.cbc.ca/news/technology/dial-up-internet-

used-by-hundreds-of-thousands-in-canada-1.1202392

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There are many different methods used to

connect to the internet ( Table 4.2 Pg.115)

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Addressing on the Internet

IP Address

Each node on the Internet has a unique IP

address

Example of an IP address: 135.62.128.91

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Addressing on the Internet (continued)

Domain Names

Consists of multiple parts separated by dots.

Example of a domain name:software.ibm.com

Domain Name Servers (DNS) translate

between domain names and IP addresses

Top Level Domain (TLD):.com (commercial), .edu (educational), .mil(military), .gov (government), .org (organizations)

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Network protocols &

Types of network processing

Network protocols Ethernet

TCP/IP ; packet switching; HTTP

Types of network processing Client/server computing

Peer-to-peer (P2P) processing

The following article explains thedifferences between the two: http://www.tomshardware.com/reviews/local-area-network-wi-fi-

wireless,3020-2.html

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Client/server computing is a distributed processing model inwhich some processing power is located within small,

inexpensive client computers

The clients are linked to one another through a network thatis controlled by a network server computer

The server sets the rules of communication for the networkand provides every client with an address so others can

find it on the network

Peer-to-Peer processing: a type of client/serverdistributed processing where each computer acts as both a

client and a server.

Client/Server Computing

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How data travels over the Internet

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Packet-Switching

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Future Internet technology

CA*net4: Canadas Internet2

Research network with new protocolsand transmission speeds

Supports high bandwidth applications

IPv6 http://www.youtube.com/watch?v=tcyC7T1Udoo

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CA*net 4

Halifax

Edmonton

Seattle

VancouverWinnipeg

Quebec City

MontrealOttawa

Chicago

Halifax

New York

Regina

Fredericton

CharlottetownVictoria

Windsor

London

Sudbury

Thunder Bay

Saskatoon

Kamloops

Buffalo

Minneapolis

Albany

St. John's

Calgary

Toronto

Hamilton

KingstonCA*net 4 Node

Possible Future Breakout

Possible Future link or Option

CA*net 4 OC192

Boston

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Future of the Internet:

IPv6

Web site addresses are running out

under the old standard called IPv4, andorganizations need to be able to handleboth IPv4 and IPv6 (Source: The Difference Engine: nomore addresses)

http://www.economist.com/blogs/babbage/2011/01/internet_architecture

The following video discusses the impact

of IPv6 for the future of the Internet: http://www.youtube.com/watch?v=gdosU4Axx88

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Is this what the Internet of

the future will provide for us?

Video, interactive holographics?

http://www.youtube.com/watch?v=jDi0FNcaock&feature=channel

Video, three-dimensional VoIP?

http://www.musion.co.uk/Cisco_TelePresence.html

What infrastructure is required to enable

these technologies?

Diff ti ti th I t t f th W ld

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Differentiating the Internet from the World

Wide Web (WWW) Internet is a world wide WAN enabled by the

world wide web (www)

WWW is a set of standards that enable useof information in a client/server or peer-to-

peer architecture

Domain name system (Video):http://www.indyarocks.com/videos/DNS-Domain-Name-System-Basics-1306541

They facilitate rapid dissemination via onlinenews sites such as this one:

http://www.france24.com/en/20101021-vietnam-floods-canada-officer-bubbles

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The Future of the Internet

http://www.youtube.com/watch?v=off08As3siM

http://www.youtube.com/watch?v=sfEbMV295Kk&feature=related

The Internet of Things

The Future Internet: Service Web 3.0

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Session 5





in businesses for the purposes of discovery,communication and collaboration

5 Assess the impact of network technologies on e-learning, distance learning and telecommuting

6 Analyze the impact of Web 2.0 technologies and

applications on organizations

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DiscoverySearch engines are computer programs that

search for specific information by key wordsand report the results.

Metasearch engines search several enginesat once and integrate the findings of the

various search engines to answer queries

posted by users.

Real Time Search

Video: http://videos.webpronews.com/2009/07/10/real-time-search-engines-rush-to-fill-new-need/

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Portals

Portal is a Web-based, personalized gateway toinformation and knowledge that provides relevant

information from different IT systems and the Internet usingadvanced search and indexing techniques.

Commercial (public) portals offer content for diverse

communities and are most popular portals on theInternet.

Affinity portals support communities such as a hobby

group or a political party.Mobile portals are accessible from mobile devices.

Corporate portals offer a personalized single point ofaccess through a Web browser

Industry-wide portals for entire industries.

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Affinity Portal (example)

This is the homepage for theYork University Alumni AffinityPortal.Clicking on the image willtake you to this page.

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Industry-wide Portal (example)

This is thehomepage ofTruckNet.Notice thefunctionalityavailable toits members.

Clicking onthe imagewill take youto theTruckNet

homepage.

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http://www.youtube.com/watch?v=EPGviIWyom4

Corporate portals

Video:

Peugeot Leads Portal

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Mobile Portals

Video about a mobile portal:http://www.youtube.com/watch?v=ADh5XUL8tLs

A mobile portal is a website with an organized directory ofresources or services, designed to accommodate visitors

accessing the website from mobile devices.

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Communications

Electronic mail (e-mail) is the largest-volumeapplication running on the Internet.

Web-based call centers (customer call center) areservices that provide effective personalizecustomer contact as an important part of Web-

based customer support.

How do we communicate via the internet?

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Communications

Electronic chat room is a virtual meeting placewhere groups of regulars come to gab.

Internet telephony (VoIP) voice-over IP digitizesyour analog voice signals, sections them into

packets, and sends them over the Internet.

VoIP Video:http://www.youtube.com/watch?v=QDNxVwQwj2U&feature=related

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CollaborationCollaboration refers to efforts of two or

more entities (individuals, teams, groupsor organizations) who work together toaccomplish certain tasks.

Work group

Virtual group (team)

Collaboration software examples: Sharepoint, Google Docs,

dropboxhttp://www.youtube.com/watch?v=eRqUE6IHTEA

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Telepresence Systems

The latest version of videoconferencing, telepresence systems, enable participants toseamlessly share data, voice, images, graphics, video, and animation electronically.

Session 5

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Session 5









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E-Learning and Distance Learning

E-Learning refers tolearning supported by theWeb.

Distance learning (DL)

refers to any learningsituation in which teachers

and students do not meetface-to-face.

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Practice Question

E-Learning for Nurses

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E-learning, distance learning The following materials provide a good

overview of the benefits and challenges of e-learning Video

This interesting video explains what we're learning fromonline education

http://www.youtube.com/watch?v=U6FvJ6jMGHU

News paper article

The online classroom: its virtually necessary, ROBERTHUISH, Globe and Mail, Thursday, Feb. 07 2013http://www.theglobeandmail.com/news/national/education/th

e-online-classroom-its-virtually-necessary/article8363453/

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Telecommuting The following materials provide a good

overview of the benefits and challenges oftelecommuting Video

Benefits of telecommuting presented in a fast andcondensed way

http://www.youtube.com/watch?v=R2whPdnCGrM

News paper article How to be out of the office but still at work, WALLACE

IMMEN, The Globe and Mail, Jan. 15 2013http://www.theglobeandmail.com/report-on-

business/careers/the-future-of-work/how-to-be-out-of-the-office-but-still-at-work/article7362810/

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Whiteboards

http://www.youtube.com/watch?v=0U05WeXPGlk&feature=related

Smart Boards video:

Session 5

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Session 5









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Web 2.0Web 2.0 is a loose collection of information

technologies and applications, and thewebsites that use them.

Videohttp://www.youtube.com/watch?v=nsa5ZTRJQ5w

Web 2 0 Information Technologies

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Web 2.0 Information Technologies

and ApplicationsAJAX: A web development technique that

allows portions of web pages to reload withfresh data instead of requiring the entire webpage to reload

Tagging: A tag is a keyword or term thatdescribes a piece of information (e.g., blog,

picture, article, video clip)

Blogs and blogging: A blog is a personalweb site, open to the public, in which the

site creator expresses his or her feelings oropinions.

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Example of TaggingThis image shows new tagging features that Technorati provides for its users.

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Crowdsourcing

Crowdsourcing involves getting a crowd of people tohelp you with a task.

The principle of crowdsourcing is based on the ideathat more heads are better than one

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Crowdfunding

Videos

http://www.youtube.com/watch?v=VJsVwBLLftc

http://www.cbc.ca/player/News/Canada/Ottawa/ID/2416838763/

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Web 2 0 Information Technologies and

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Web 2.0 Information Technologies and

Applications (continued)

Really Simple Syndication (RSS) allows users toreceive, or customize the information they receive when they want itwithout having to surf thousands of web sites.

Wikis - A wiki is a web site on whichanyone can post material and make changes toother material.

Link: Wikis used in business

C f S

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Categories of Web 2.0 Sites

Social Networking Sites: Allow users to upload

their content to the web in the form of text,voice, images, and video.

C i f W b 2 0 Si

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Aggregators: Provide collection of content fromthe web (e.g., Technorati, Digg, Simple thred).

http://www.youtube.com/watch?v=0Daxzh0H1aw

Example to an aggregator company site:

C t i f W b 2 0 Sit

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Mashups: A web site that takes content from anumber of other web sites and mixes them

together to create a new kind of content (e.g.,

SkiBonk, Healthmap, ChicagoCrime)

M h

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Mashup (Skibonk)

M h

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Mashup (HealthMap)

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Mashup(Choice Hotels International)

Widgets

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Widget is a portable chunk of code that can be installed andexecuted within any separate HTML-based web page by anend user without requiring additional compilation.

Widgets

Widgets often take the form of on-screen tools (clocks, eventcountdowns, auction-tickers, stock market tickers, flight arrival

information, daily weather etc).

Widgets

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Widgets

Time widget

Weather widget

Date widget

Example of widgets on a monitor. Note the time, weather, and calendar widgets.

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More Videos

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More Videos

http://www.youtube.com/watch?v=1YpqTUwowas&feature=related

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Team work created this course The materials for this course were developed

by Cristobal Sanchez-Rodriguez and IngridSplettstoesser, with the help of: Hila Cohen

Ken Cudeck

Marius Dobre

John Kucharczuk

Carl Lapp

Donna Rex

Mario Vasilkovs

2511 lecture 5

Documents