Foundations of the Internet

1. CONTEMPLATE THE FOLLOWING:
INTERNET STANDS FOR
INTERCONNECTED NETWORK
IS THIS A GOOD NAME FOR THE INTERNET?
WHY OR WHY NOT?

2. ARPANET–---------------
THE NETWORK THAT BECAME THE
BASIS FOR THE INTERNET.
ARPA U.S. ADVANCED RESEARCH PROJECTS AGENCY
DEFENSE CENTRALIZED COMMUNICATION
SYSTEMS ARE VULNERABLE TO ATTACK
RESEARCH UNIVERSITIES HELPED CREATE IT
ARPANET – OUR PLANET is now full of
networked computers.

3. TIM BURNERS-LEE-----
INVENTED THE
WORLD WIDE WEB!
HTML (HYPERTEXT MARKUP LANGUAGE)
HTTP (HYPERTEXT TRANSFER PROTOCOL)
URLS (UNIVERSAL RESOURCE LOCATORS)
Timber! Nerds Leap! Nerds leapt for joy when
the obstacles of the internet were chopped down.

4. HTTP–––––––----------------
HYPERTEXT TRANSFER PROTOCOL
STRUCTURE HYPERTEXT IS STRUCTURED TEXT
THAT USES LOGICAL LINKS (HYPERLINKS) BETWEEN
NODES CONTAINING TEXT.
METHOD VERSION ONE OF THE PROTOCOL
HAD ONLY ONE METHOD: GET. IT WOULD REQUEST
AN HTML PAGE FROM A SERVER.
Hey! Chief TeePee! (HTTP is very demanding)

5. TCP/IP–––––––––––-------
TRANSMISSION CONTROL PROTOCOL/
INTERNET PROTOCOL
TCP DIVIDES DATA INTO PACKETS, SENDS TO IP,
REASSEMBLES THEM IN ORDER, CHECKS IF INTACT
IP GETS PACKETS FROM TCP, ADDS VIRTUAL
ADDRESSES (IP ADDRESS) FOR THE SENDER AND
THE RECEIVER OF THE DATA
To Carry Packets / I Practice!

6. IP ADDRESS–-------------
INTERNET PROTOCOL ADDRESS
IDENTIFICATION IDENTIFIES COMPUTERS
AND OTHER DEVICES ON A TCP/IP NETWORK.
TEMPORARY INTERNET SERVICE PROVIDERS
(ISP’S) HAVE A POOL OF IP ADDRESSES WHICH
THEY DISTRIBUTE TO USERS WHEN THEY CONNECT
iPhone, iPad, and iPod all need IP to
address the internet.

7. DNS–––––––––-------------
DOMAIN NAME SERVICE
JOB YOU ENTER A URL INTO YOUR WEB BROWSER
YOUR DNS SERVER SEARCHES FOR THE IP ADDRESS
STORAGE DOMAIN NAMES PREVIOUSLY
MAPPED TO IP ADDRESSES ARE STORED TO SPEED
UP FUTURE REQUESTS
Do Not Sweat – Numbers may scare you,
DNS is here to help!

8. MOSAIC–-------------
THE FIRST POPULAR
GRAPHICAL WEB BROWSER
NETSCAPE IT LED TO THE FIRST SUCCESSFUL
COMMERCIAL WEB BROWSER
IE IT SPAWNED COMPETITION FROM MICROSOFT
GAME CHANGER CREATED THE INTERNET BOOM
MOE SAY ICH! (Moe doesn’t like the outdated browser)

9. ISP–––––––––-------------
INTERNET SERVICE PROVIDER
GATEWAY THESE COMPANIES PROVIDE
ACCESS TO THEIR NETWORK
NETWORKING ISP’S CONNECT TO EACH
OTHER THROUGH THE PROCESS OF ‘PEERING’.
THESE AGREED UPON CONNECTIONS ALLOW
DATA TO TRAVEL THROUGH MULTIPLE NETWORKS.
Why...yes please! Be polite to the gatekeepers!

10. POP3––––––––––-------------
POST OFFICE PROTOCOL 3
POPULAR MOST COMMON TYPE OF PERSONAL
EMAIL SERVER
TEMPORARY STORAGE (POP3) SERVERS
HOLD INCOMING E-MAILS UNTIL YOU CHECK
THEM, AT WHICH POINT THEY'RE TRANSFERRED TO
YOUR COMPUTER AND DELETED FROM THE SERVER
POP3 won’t STOP ME (from reading my emails)

11. TINYURL.COM/WTWSFI
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NJAMES@UPLIFTEDUCATION.ORG