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Transcript 
CSE 101
Introduction to the Internet
Networks


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LAN (Local Area Network)
WAN (Wide Area Network)
MAN (Metropolitan Area Network)
GAN (Global Area Network)
LAN Typologies
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Bus
Token Ring
Star
Hierarchical
Decentralized
Bus
Token Ring
Star
Hierarchical
Decentralized
1969 ARPAnet



Advanced Research
Projects Agency
DoD
4 Universities




UCLA
UCSB
U Utah
SRI
3 Basic Truths

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
The network grows fast
Once you are touching one point on the
Internet you can touch all other points
connected to the Network
You cannot just remove unwanted
information from a decentralized network
Grows Fast



1971-- 15 Nodes
1972 -- 37 Nodes
Network kept
doubling in size
every year
Once you touch one point
you can reach the whole net
You cannot remove
Information from the Net


Communications Decency Act 1995
Child Protection Software
 Cyber Patrol
 Surf Watch
 Net Nanny
Tower of Babble
TCP/IP


1975
Common set of protocols so that all
computers on the network can communicate
with one another
SMTP - Simple Mail
Transfer Protocol

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
E-mail is in ASCII text
POP Mail
Client side e-mail applications
 Netscape, Outlook, Eudora, Pegasus

Server side e-mail
 Pine
Listserve
(Mailing lists)





Unmoderated
Moderated
Send only
Internal
Majordomo
NNTP - Network News
Transfer Protocol

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

USENET News
Not all servers carry all newsgroups
http://www.deja.com
Tracking Treads
Netiquette

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
Lurk
FAQ
SPAM
Flame
Emoticons
FTP
(File Transfer Protocol)

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
Anonymous
Username and password authenticated
Software
 WS_FTP
 CUTE FTP
 Fetch for the MAC
1980s PC Revolution




BBS
Online services
Government gives ARPANET to National
Science Foundation with 20 Mil $$$ (1983)
NSFNet
HTTP (Hyper Text
Transfer Protocol)



Hyper Text
Written in HTML (Hyper Text Markup
language)
URL (Uniform Resource Locator)
Other Internet Stuff

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
Java Script
Java Applets
Shockwave
Real Audio / Video
Addresses

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E-mail <[email protected]>
Web <http://www.whatever.extention>
.com
.net
.edu
.gov
.org
Addresses




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
.ca
.ru
.uk
.jp
.no
etc...
More History
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
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1989 - ARPAnet taken off line
1990-1993 Huge Growth.
1993 Introduction of Mosaic
ISPs come into existance
1994 Marc Anderseen stars Netscape
1995 Common Grounds Internet Café
opens.
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