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Please discontinue use of cell phone and turn off ringer. The Internet and Web. Internet Technology Internet Communications Web technology Web Applications. Key Terms. Computer Network Internet Backbone Internet Service Provider (ISP) Routers Dial-up Connection.

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the internet and web

Please discontinue use of cell phone and turn off ringer

The Internet and Web

Internet Technology

Internet Communications

Web technology

Web Applications

4 1 internet technology

Key Terms

  • 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)

4.1 Internet Technology

What is the Internet?

slide3

What is the Internet?

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

a brief history of the internet
A Brief History of the Internet

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

internet growth
Internet Growth

The Web arrives

www.internetworldstats.com

internet hardware

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

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

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

internet hardware1
Internet Hardware
  • Network Service Providers
    • Major telecom companies that provide the Internet backbone.

http://navigators.com/isp.html

internet hardware2
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 hardware3

7’

The Cisco CRS-1 router is controlled by a unique self-healing 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.

Internet Hardware
  • Routers: computing devices that manage network traffic by evaluating data packets and routing them to their destination.

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

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

An email message

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….

packet switching1
Packet Switching

Divided into packets

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….

packet switching2

Dear Joan,

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

Message 3761HZA Date May 1 Packet 1 of 3From sweetykb@aol.comTo joan_kelly@yale.edu

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

Message 3761HZA Date May 1 Packet 2 of 3From sweetykb@aol.comTo joan_kelly@yale.edu

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

Message 3761HZA Date May 1 Packet 3 of 3From sweetykb@aol.comTo joan_kelly@yale.edu

Packet Switching

Packet headers added

packet switching3

Dear Joan,

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

Message 3761HZA Date May 1 Packet 1 of 3From sweetykb@aol.comTo joan_kelly@yale.edu

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

Message 3761HZA Date May 1 Packet 2 of 3From sweetykb@aol.comTo joan_kelly@yale.edu

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

Message 3761HZA Date May 1 Packet 3 of 3From sweetykb@aol.comTo joan_kelly@yale.edu

Packet Switching

Each packet sent individually over the network

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

packet switched network

Router

Router

Router

Router

Router

Router

Router

Router

Router

Packet Switched Network

Router

Router

Router

Router

email

Router

Router

email

packet switching4
Packet Switching
  • Packet switching is much more efficient than circuit switching.

Technology:Networking/TelecomsWednesday 28 May 2003 Sprint moves to packet-switch networkSprint is to change its entire circuit-switched telephone network to packet technology in an attempt to keep up with customer demand for capacity.

Sprint's eight million lines will be moved over to the packet-based asynchronous transfer mode (ATM) system, allowing voice, video and data to be broken down into small digital blocks and sent, in effect, simultaneously.This allows the network to be used more efficiently, and will also allow new multimedia services, Sprint said.

Sprint is the first major telecoms company to move all of its local, tandem and long-distance networks over to packet technology, according to Nortel Networks spokeswoman Ann Fuller.

internet protocols
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

internet protocols1
Internet Protocols
  • TCP/IP
    • Transmission 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
network architectures
Client/Server

Peer-to-Peer

Network Architectures

Original Napster vs. Kazaa

review

Review

The primary Internet pathways and connections are called the Internet ______________.

Who owns most of the physical networks that make up the Internet?

What type of switching is used for Internet data as it travels over the network?

The devices that guide Internet data packets to their destination are called __________.

Which type of residential Internet access service boasts the fastest speeds?

Compare the pros and cons of connecting to the Internet via cell phone vs. cable modem.

What are the protocols of the Internet?

Compare and contrast Client/Server and P2P network architectures.

4 2 web technology

Key Terms

  • Hyperlink
  • HTTP
  • Web browser
  • Web server
  • URL
  • HTML
  • XML
  • Web authoring software
  • Cookies
  • Plug-in
  • Content Streaming

4.2 Web Technology

What is the Web?

the web
The Web
  • The World Wide Web is an Internet-based service that provides convenient access to information through hyperlinks.
web protocols standards

Domain name

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

http://www.icann.org/

web protocols standards1
Web Protocols & Standards
  • 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.
web protocols standards2
Web Protocols & Standards
  • Many of today’s popular applications store files in XML format for easy data sharing.
web authoring software

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

Web-Authoring Software
  • Web Authoring Software allows you to create HTML documents using word-processor-like software
programming the web
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
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 and Quicktime.

Demos:http://harrypotter.warnerbros.com

http://getitnow.vzwshop.com/vcast.home.do

http://www.toyota.com/vehicles/2005/prius/int360.html

web browser plug ins1
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

Key Terms

  • Search engine
  • Web Portall
  • Synchronouscommunication
  • Asynchronous communication
  • E-mail
  • E-mail attachment
  • Instant messaging (IM)
  • Chat
  • SMS Text messaging
  • Blogs
  • Video Conferencing
  • Telecommuting

4.3 Internet and Web Applications

How are they used?

slide32

Communications

E-commerce

The Web

InformationDistribution

The Internet

The Internet & Web

web tools
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.
communication and collaboration
Communication and Collaboration
  • Face to Face
  • Video + Voice
  • Voice Only
  • Text Only

Effectiveness

communication and collaboration1
Communication and Collaboration
  • Synchronous Communication takes place in real time.
    • Phone conversation
    • Instant Messaging
  • Asynchronous Communication allows participants to leave messages to be accessed whenever.
    • Voice mail
    • Email
    • SMS Texting
slide36

Face-to-face

  • Video conferencing
  • Phone (voice)
  • Instant messaging/Chat
  • Voice mail
  • Email
  • SMS Texting

Synchronous

Effectiveness

Asynchronous

Convenience

Communication and Collaboration

slide37

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

communication and collaboration2
Communication and Collaboration
  • Text based Communication
    • Email
      • Attachments
    • Instant messaging (IM)
    • Chat
communication and collaboration3

1

2abc

3def

4ghi

5jkl

6mno

7pqrs

8tuv

9wxyz

Decipher this!

35 or 243 possible words

0

Communication and Collaboration
  • SMS Text Messaging
  • Predictive Text Input

H E L L O

4ghi

3def

5jkl

5jkl

6mno

http://www.transl8it.com

communication and collaboration4
Communication and Collaboration

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

  • 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/)
  • APodcastisan 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).
communication and collaboration5

www.current.tv

Communication and Collaboration
  • Vlog (Vodcast)
    • Video-based blogs (www.vlogdir.com/)
  • Consumer Generated Media is the recent trend of the general public capturing and reporting the news.

How does consumer genereated media compare to main stream media?

voice over ip voip
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
  • Residential VoIP, Broadband Phone
    • Phone service over a broadband Internet connection.
  • http://www.voipchoices.com/vonage.html
video conferencing
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.

news and information
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.

education and training

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
Education and Training
  • Life-long learning is your future…
e commerce
E-commerce
  • E-commerce has opened up new opportunities in buying and selling.
travel
Travel
  • The Web has transformed the travel industry.
employment and careers
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
Information

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

  • Research on the Web
    • Subject Directories, and Search Engines
    • Issues of reliability
    • Library Web sites
    • Research Databases
the future internet
The Future Internet
  • Internet2 is a research and development consortium led by over 200 U.S. universitoes 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
High-Speed Internet Applications
  • Interactive Collaboration

Long distance collaboration and education.

www.accessgrid.com/

Two dancers in different locations dance together.

high speed internet applications1
High-Speed Internet Applications
  • Real-time access to remote Resources

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

high speed internet applications2
High-Speed Internet Applications
  • Large-scale Multisite Computation and Data Mining
  • Shared Virtual Reality

Consider the future of

www.secondlife.com