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Introduction to the Internet. Brett J. Trout. The Internet. "640K ought to be enough for anybody." - Bill Gates, 1981 Change is the only constant Anticipate rather than react . What Is the Internet?. What Is the Internet?. What Is the Internet?. What Is the Internet?.

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the internet
The Internet
  • "640K ought to be enough for anybody." - Bill Gates, 1981
  • Change is the only constant
  • Anticipate rather than react
history
History
  • Eisenhower reacts to sputnik
    • Creates advanced research project agency ARPA
    • Concerns rise over missiles
  • ARPA
    • Investigates decentralizing Department of Defense
    • Interconnected network
the idea is born
The Idea Is Born
  • Paul Baran
    • Rand corporation
    • Investigates use of telephone lines to decentralize
  • Nodes
    • Did not materialize until late 60’s
    • Four American universities
      • U.C. Santa Barbara
      • University of Utah
      • Stanford
      • UCLA
milestones
Milestones
  • 1982-DOD makes TCP/IP standard
  • 1990-Internet independently viable and ARPA exits picture
  • 1992-over 5 million computers
  • 1999-over 150 million computers
terminology
Terminology
  • IP number
    • Internet protocol number
    • Unique numeric identifier of each user
    • Your ISP typically assigns you A new one each time
    • Websites assigned static IP numbers
terminology13
Terminology
  • Domain name
    • Unique for each extension
      • .com
      • .org
      • .edu
      • .net
      • .gov
    • Requires host server for use
terminology14
Terminology
  • New Top Level Domain Names
    • .aero
    • .biz
    • .coop
    • .info
    • .museum
    • .name
    • .pro
  • All but .info will be restricted
terminology15
Terminology
  • DNS
    • Domain name system
    • Database
    • Resolves domain names to IP numbers to locate websites
internet glossary
Internet Glossary
  • Internet - A global computer network utilizing standard access and transmission protocols. Although the Internet includes mainframe computers, the bulk of the workload on the Internet is handled by millions of small "servers", no larger than a typical personal computer.
slide17

Browser - A software program designed to send user defined requests for information over the Internet, for receipt, interpretation and display of the information by the user.

slide18
Server - A special computer having increased memory and processing power typically using a UNIX operating system. A server is designed to prioritize aspects of each task, based upon pre-determined rules. This allows a server to perform many simultaneous tasks and to more quickly transfer information from one computer to another over a network, such as the Internet.
slide19
UNIX - An established computer operating system especially well suited to addressing simultaneous requests for information.
slide20

URL- Uniform Resource Locator (sometimes pronounced "Earl") A location identifier associated with a particular webpage or file on the Internet, e.g. www.bretttrout.com

slide21
TCP - Transmission Control Protocol. This is the standard protocol computers utilize to communicate with one another over a network.
slide22
Bandwidth - Data volume transfer capability. Greater bandwidth is especially important for the transmission of graphics and will continue to be important as streaming video and other large volume applications come into more widespread use.
slide23
ISP - Internet Service Provider. An Internet server which, for a fee, allows a large number of "users" to share a limited amount of bandwidth and computer storage space.
slide24
IP- Internet Protocol. This is the standard protocol for allowing computers to identify one another over the Internet.
slide25

IP Address - An address which allows computers to find one another over the Internet. Your IP Address may change every time you log on, if you dial up to the Internet through an ISP. This is called a "dynamic" IP Address.

slide26

HTTP - Hyper Text Transfer Protocol. This is a protocol for informing your browser how to display information found on a particular webpage. All webpages on the World Wide Web utilize HTTP, making them accessible to all other Web computers.

slide27

FTP - File Transfer Protocol. This is a protocol computers use to send files to one another. You may either upload or download files using FTP

slide28
HTML - Hyper Text Markup Language. A computer language used to encode nearly every webpage on the Internet. HTML informs a browser what information is on the page and instructs the browser how to display the information. The popularity of HTML stems from its ubiquity, ease of use and power.
slide29

XML - eXtensible Markup Language. A computer language which also instructs the browser how to display the information. Additionally, XML includes information relating to the "type" of information which allows other applications to use the information. XML will become increasingly important as mobile Internet devices incorporate data obtained over the Internet into spreadsheets, word processing programs, PDAs and other applications.

slide30
Dial-up Connection - An Internet connection typically provided through an ISP, such as America Online. Dial-up connections are typically the slowest type of Internet connection with download speeds of 56 kbps (kilobits per second).
slide31
ISDN Connection - Integrated Services Digital Network. An ISDN connection is an Internet connection. Typical ISDN connections provide two 56kbps channels used to access the Internet at 128kbps, or to access the Internet at 56kbps and use the other channel as a telephone line for voice communication.
slide32
DSL Connection - Digital Subscriber Line -Connects to the Internet using a regular phone line and a network box. DSL provides very high speed transmit speeds 256kbps to 1.5Mbps (megabits per second), depending on service provider, with slower receive speeds of about 64kbps.
slide33

Cable Connection - Coaxial cable with very high receive speed of 27Mbps are possible, with transmit speeds of 96kbps to 15Mbps. The number of users sharing access, however, drastically reduces the speed. A cable connection is slightly less than other options since information may pass through neighbors' computers before hitting the Web.

slide34

Satellite- 400kbps receive 56kbps transmit. You must also have a dial-up or other modem to transmit.

T1 - A direct connection to the Internet. Very fast at 1.5Mbps, but also very expensive.

slide35

PDA - Personal Digital Assistant. Typically a hand-held computer running a small number of specialized applications. PDAs will become increasingly important as wireless capability and increased power, allow PDAs to run full version browsers and software applications, allowing PDAs to quickly access a broader range of information over the Internet.

slide36
Cookie - Small text file written to your hard drive by a website which rarely contains sensitive information, and cannot be read by any website other than the one that created it. A cookie allows the website that created it to provide you with information faster and reduce the amount of information you must key in to access information on the webpage. You may unilaterally delete a cookie from your hard drive at any time.
slide37

Upload - To forward a file to a server for later access over the Internet.

Download - To copy a file from an Internet server to recordable media, such as a hard drive or a floppy disk.

slide38
WWW - The World Wide Web, or "Web", is the universe of users and resources accessible over the Internet using HTTP.
slide39
DNS - Domain Name System. A worldwide collection of databases used to translate domain names to their IP Addresses.
slide40
TLD - Top-level domain name. The highest-level domain name in the DNS hierarchy. The portion of the domain name appearing to the right of the "dot" in a URL.
slide41
SLD - Second level domain name. The second highest-level domain name in the DNS hierarchy. The portion of the domain name appearing to the immediate left of the "dot" in a URL.
slide42
email - Electronic Mail. A message containing text, graphics, video and/or audio transmitted electronically to another computer. Typically, email is divided into numerous "packets", each transmitted to another computer over the Internet. Since each packet is transmitted using a different "route", it is extremely difficult, but not impossible, to surreptitiously intercept and interpret an email message sent to another party. Generally, it is much easier to intercept and decode a cellular phone call than to intercept and decode an email message.
slide44
POP - Post Office Protocol. This is the protocol computers use to "receive" email from an email server.
slide45
MIME - Multipurpose Internet Mail Extension. This is the convention computers use to "email" various file types to other computers.
redneck it terminology
Redneck IT Terminology

Backup - What you do when you sight a skunk in the woods.

Bar code - Them's the fight'n rules down da local tavern.

Byte - What yer pit bull dun to cusin Jethro.

redneck it terminology47
Redneck IT Terminology

Cache - Needed when you go to da store.

Terminal - Time to call da undertaker.

Digital – The art of counting on your fingers.

redneck it terminology48
Redneck IT Terminology

Hacker - Uncle Leroy after thirty years of smoking.

Hardcopy - Picture looked at when selecting tattoos.

Internet - Where cafeteria workers put their hair.

redneck it terminology49
Redneck IT Terminology

Keyboard - Where you hang the keys to the John Deere.

Megahertz - How your head feels after seventeen beers.

Modem - What ya did when the grass and weeds got too tall.

redneck it terminology50
Redneck IT Terminology

Mouse pad - Where Mickey and Minnie live.

Network - Scoop'n up a big fish before it breaks the line.

Rom - Where the pope lives.

redneck it terminology51
Redneck IT Terminology

Screen - Helps keep the skeeters off the porch.

Serial port - A red wine you drink with breakfast.

Superconductor - Amtrak's Employee of the year

Scsi - What you call your week-old underwear.

advantages of the internet
Advantages of the Internet
  • No one “owns” the web
    • Low cost
    • Weak link is your ISP
  • Wealth of information
    • Many resources available only on the web
    • Constantly updated
disadvantages
Disadvantages
  • You will come to base your business on ready Internet access
  • No guarantees
    • Authenticity
    • Updates
    • Accuracy
where is the internet used
Where Is the Internet Used
  • 52.4% Non-English speaking
  • 55 percent of Internet traffic comes from outside the US
  • 26% European
  • 16% Asian
use by businesses
Use By Businesses
  • Passive web sites
    • Informational
  • Interactive web sites
    • Execute on-line forms
  • Chat forums
  • Commerce exchange
    • Secure transactions
use by individuals
Use By Individuals
  • Online purchases
    • 66% Internet users worldwide made online purchases last year.
    • 1.5 M cars sold online
  • Communication
  • Investing
  • Product research
  • General research
  • Gaming/recreational
purchases
Purchases
  • Books
  • Music
  • Computers
  • Clothing
  • Health and beauty
  • Sporting goods
  • Flowers
  • Toys.
barriers to online purchases
Barriers to Online purchases
  • High shipping costs
  • Leads to the most abandoned shopping carts.
u s users
U.S. users
  • 60 percent of the U.S. population is online
  • From 90,000 in 1993 to 168 million in 2001.
  • 83 percent of highest socioeconomic bracket are connected
  • Only 35 percent of the lowest are connected.
use in the future
Use In The Future
  • 60% of brokerage industry
  • $10B in entertainment and travel ticket sales
  • $1.6B in online music sales by 2002
use in the future61
Use In The Future
  • Wireless web access
  • Greater collection of personal data
    • Authorized-web safe deposit boxes
    • Unauthorized-cookies, Trojan horse programs
  • New laws governing use
use in the future62
Use In The Future
  • Speed will increase
    • 56kbs standard home access
    • 1544kbst-1 line
    • 39mbs ICN
    • No limit
  • Higher speed translates into more accessible information
  • Full motion video
use in the future63
Use In The Future
  • Everyone in courtroom has Internet and searchable access to all exhibits
  • Experts may testify without travel
  • Full motion presentation to jury throughout trial
internet law practice
Internet Law Practice
  • Online legal research
  • E-mail communication with clients
  • Audio/visual presentations
    • Settlement proposals
    • Juries
  • Briefs on CD-rom
    • Hypertext links
    • Full motion video and exhibits
the take home
The Take Home
  • Use the Internet
  • Compile a list of trusted links
  • Check information against date of last update
  • Double/triple check statistics
  • Be aware of the site’s biases
  • Check your authorization to use the materials