Succeeding with Technology Succeeding with Technology

Succeeding with Technology

The Internet and Web

Internet Technology Internet Communications Web technology Web Applications

Please discontinue use of cell phone and turn off ringer


4.1

Internet Technology

What is the Internet?

• Computer Network• Internet Backbone• Internet Service Provider

(ISP)• Routers• Dial-up Connection

• Cable modem connection

• DSL connection• DSS connection• Protocols• TCP/IP

• IP Address• Client/server• Port• Peer-to-peer (P2P)

Key Terms

Visualization of the Internet’s topology from http://www.cybergeography.org/atlas/topology.html

What is the Internet?

http://www.cybergeography.org/atlas/topology.html


A Brief History of the Internet

Listen to ethan zuckerman as he talks about the history of the Internet

http://www.zakon.org/robert/internet/timeline/


Internet Growth

www.internetworldstats.com

The Web arrives


Internet Hardware

The Internet backbone consists of the main pathways and connections of the Internet owned primarily by telecom companies.

Verizon’s/MCI’s UUNet carries 28% of Internet traffic

http://en.wikipedia.org/wiki/Internet_backbone


Internet Hardware

Network Service Providers Major telecom

companies that provide the Internet backbone.

Network Service Providers27.9% Verizon/MCI/UUNET

10.0% AT&T

6.5% Sprint

6.3% Genuity (level 3)

4.1% PSINet

3.5% Cable & Wireless

2.8% XO Communications

2.6% Verio

1.5% Qwest

http://navigators.com/isp.html


Internet Hardware

Points of Presence (POPs) Facilities provided by Network Service Providers

that allow users to connect to the Internet backbone.

Internet Service Providers Companies that provide users with access to the

Internet. Dial-up vs. DSS vs. Cell vs. DSL vs. Cable

Top 22 ISP’s: http://www.isp-planet.com/research/rankings/usa.html


Internet Hardware

Routers: computing devices that manage network traffic by evaluating data packets and routing them to their destination. The Cisco CRS-1 router is

controlled by a unique self-heating and self-defending operating system designed for always-on operation while scaling system capacity up to 92 Tbps. Routers such as this one manage traffic on the Internet Backbone.

7’

http://computer.howstuffworks.com/router1.htm


Packet Switching

A packet switching network divides all network data into small packets for faster, more efficient delivery.

Dear Joan,

Hi! How’s it goin’? Just finished midterms, and it looks like I might graduate this semester after all! :-) My computer teacher is really great and I guess that I learned more than I thought in those wonderful lectures that I had previously written you about….

Dear Joan,

Hi! How’s it goin’? Just finished midterms, and it looks like I might graduate this semester after all! :-) My computer teacher is really great and I guess that I learned more than I thought in those wonderful lectures that I had previously written you about….

An email message


Packet Switching

learned more than I thought in those wonderful lectures that I had previously written you about….learned more than I thought in those wonderful lectures that I had previously written you about….

Divided into packets

looks like I might graduate this semester after all! :-) My computer teacher is really great and I guess that Ilooks like I might graduate this semester after all! :-) My computer teacher is really great and I guess that I

Dear Joan,

Hi! How’s it goin’? Just finished midterms, and it

Dear Joan,



Packet Switching

Packet headers added

Dear Joan,


Dear Joan,


Message 3761HZA Date May 1 Packet 1 of 3From [email protected] [email protected]


learned more than I thought in those wonderful lectures that I had previously written you about….




looks like I might graduate this semester after all! :-) My computer teacher is really great and I guess that I





Packet Switching

Each packet sent individually over the network

Dear Joan,


Dear Joan,












Demo at http://acns.fsu.edu/~zeisler/usedu.html


Internet Protocols

Protocols are rules that govern how data is transmitted and received.

They govern all Network and Internet communications: The Internet The Web Email Instant Messaging Etc.

Ports are numeric addresses assigned to specific network services, and used in packet headers to direct data packets to the appropriate service. See http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers

Ports are numeric addresses assigned to specific network services, and used in packet headers to direct data packets to the appropriate service. See http://en.wikipedia.org/wiki/List_of_TCP_and_UDP_port_numbers


Internet Protocols TCP/IP

Transaction Control Protocol (TCP): Divides data into packets for transmission, and reassembles data from packets upon delivery.

Internet Protocol (IP): Controls the delivery of packets between IP addresses.

IP Address a 32-bit number that identifies each sender or receiver of

information that is sent in packets across the Internet. 10000000.11111111.10110101.00010111 128.255.181.29 www.fsu.edu http://checkip.dyndns.org/


Network Architectures Client/Server Peer-to-Peer

Original Napster vs. Kazaa


4.2

Web Technology

What is the Web?

• Hyperlink• HTTP• Web browser• Web server• URL

• HTML• XML• Web authoring

software• Cookies

• Plug-in• Content Streaming

Key Terms


The Web

The World Wide Web is an Internet-based service that provides convenient access to information through hyperlinks.


Web Protocols & Standards

HTTP: Hypertext Transfer Protocol defines and controls communication between Web server and client (Web browser).

URL: Uniform Resource Locator is the fancy name for a Web address.

http://www.icann.org/

http://www.cs.fsu.edu/~baldauf/presentations/swt/2/index.html

Domain name



HTML: Hypertext Markup Language is the formatting language used to define the appearance of Web pages. Try View Source in IE

XML: New and popular standard for describing and classifying data in Web pages and other Web services.



Many of today’s popular applications store files in XML format for easy data sharing.


Web-Authoring Software

Web Authoring Software allows you to create HTML documents using word-processor-like software

Macromedia’s Dreamweaver software allows you to design Webpages and Websites using a WYSIWYG interface.


Programming the Web

Cookies are data generated by a Web server, and stored on your computer.

Used to target marketing or customize a webpage when you next visit the server.

Demowww.amazon.com

IE/Tools/Options/Settings/


Web Browser Plug-Ins

A plug-in is a program that works with the browser to offer extended services –typically the ability to view animations or video, listen to music, or interact with the Webpage.Popular plug-ins include Flash, Quicktime

& latest Windows Media Player. Demos:http://harrypotter.warnerbros.comhttp://getitnow.vzwshop.com/vcast.home.dohttp://www.toyota.com/vehicles/2005/prius/int360.html


Web Browser Plug-Ins

Content streaming allows media files to play while they are being delivered by the Web server.

www.movies.com


4.3

Internet and Web Applications

How are they used?

• Search engine• Web Portal• Synchronous

communication• Asynchronous

communication

• E-mail• E-mail attachment• Instant messaging (IM)• Chat• SMS Text messaging• Blogs

• Video Conferencing• Telecommuting

Key Terms


The Internet

The Web

Communications

E-commerce

InformationDistribution

The Internet & Web


Web Tools

Search Engines: Helps us find information on the Web through keyword searches of databases built by spiders or crawlers (http://a9.com/).

Subject Directories: A catalog of sites collected and organized by people.

Portals: Web pages that serve as entry points to the Web.


1. Face-to-face

2. Video conferencing

3. Phone (voice)

4. Instant messaging/Chat

5. Voice mail

6. Email

7. SMS Texting

Syn

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Communication and Collaboration


Researchers at Caltech’s VRVS lab are able to video Conference from 36,000 feet above the Pacific Ocean.

Researchers at Caltech’s VRVS lab are able to video Conference from 36,000 feet above the Pacific Ocean.


Worlds Chat with avatars in a 3D virtual environmnt


Blogs (Web logs) are websites created to express one or more individual’s views on a given topic (ie. http://www.bloglines.com/topblogs) A blog aggregator is software that allows you to subscribe

to numerous blogs (ie. http://www.bradsoft.com/feeddemon/)

A Podcast is an audio file that contains a recorded broadcast distributed over the Internet for use on PC or Mobile media device. Podcast Aggregator: provides access to podcasts that

may be set to automatically download to your PC (iTunes).

RSS (Really Simple Syndication) A web-content distribution technology



Vlog (Vodcast) Video-based blogs (www.vlogdir.com/)

Consumer Generated Media is the recent trend of the general public capturing and reporting the news.


www.current.tv

How does consumer genereated media compare to main stream media?

How does consumer genereated media compare to main stream media?


Voice over IP (VoIP)

Technology that enables network managers to route phone calls over the same network they use for data.

Future of Phones: http://newsroom.cisco.com/dlls/video_audio_archive/?all Also see Video Telephony


Residential VoIP

• Residential VoIP, Broadband Phone• Phone service over a broadband Internet

connection.

http://www.voipchoices.com/vonage.html


Video Conferencing Video conferencing is a technology

that combines video and voice communications along with document sharing.

Telecommunications is the process of working from locations away from the office by using telecommunications technologies.

Telecommunications is the process of working from locations away from the office by using telecommunications technologies.


News and Information

On-line news services allow you to drill-down into the story to get background information and details.

Webcasting uses the Web to deliver news video footage.

Webcasting uses the Web to deliver news video footage.


Education and Training

Life-long learning is your future…NETg Offers…• 1,850 IT and

desktop e-Learning courses

• 1,300 business and professional development e-Learning courses

• 2,000 up to date, searchable, IT, Desktop and Business Books from Safari

• 250 instructor and student manuals for ILT training


E-commerce

E-commerce has opened up new opportunities in buying and selling.


Travel

The Web has transformed the travel industry.


Employment and Careers

The Web assists us in researching career possibilities: Selecting a career Researching companies Networking with colleagues Searching want ads Creating Resumes & Professional

Websites


Information

Research on the Web Subject Directories, and Search Engines Issues of reliability Library Web sites Research Databases

Consumers are increasingly reliant upon online resources to ease and inform major life events.

Consumers are increasingly reliant upon online resources to ease and inform major life events.


The Future Internet

Internet2 is a research and development consortium led by over 200 U.S. universities and supported by partnerships with industry and government to develop and deploy advanced network applications and technologies for tomorrow’s Internet.

The National LambdaRail (NLR), or Internet3 is a cross country, high-speed fiber-optic network dedicated to researching high-speed networking applications.


High-Speed Internet Applications

Interactive Collaboration

Long distance collaboration and education.www.accessgrid.com/

Two dancers in different locations dance together.



Real-time access to remote Resources

Scientists can control the astronomical telescopes at Gemini observatories in Hawaii and Chile from any location on Internet2.



Large-scale Multisite Computation and Data Mining

Shared Virtual Reality

Consider the future ofwww.secondlife.com


Chapter 4 Questions?

Don’t forget to turn your phone on!!

Succeeding with Technology Succeeding with Technology

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