Sputnik and the internet

http://www.computerworld.com/s/article/9036482/Happy_Birthday_Sputnik_Thanks_for_the_Internet_

http://computer.howstuffworks.com/internet/basics/internet-start.htm

every computer can have an IP address
http://en.wikipedia.org/wiki/IP_address?utm_source=twitterfeed&utm_medium=twitter

DNS domain name service
google.com
will yield
http://72.14.204.101/

0.. 255
256 ^ 4

URL
Uniform resource locator
http://en.wikipedia.org/wiki/Uniform_resource_locator

scheme://
protocol://

http://
hypertext transfer protocol

https://
secure

ftp://

telnet://

gopher://

domain:
en.wikipedia.org
http://en.wikipedia.org/wiki/Uniform_resource_locator
scheme://domain/

domain
last two items, usually, in the US
subdomain
e.g., en, www,

http://eniac.cs.qc.edu/~svitak/cs12/

scammers
phishing scheme

http://chase.safenetworking.com/login
http://chase.scamsite.com/login

http://3.0.4.123/chase.com/

http://0xc.0x2.4.123/chase.com/

TLD
top level domains
TLAs
three letter acronyms

.com
.net
.biz
.tv
.org
.gov
.edu
.xxx

country codes
uk
.co.uk
google.co.uk

whitehouse.gov
whitehouse.net