lecture #6

The Internet vs. World Wide Web

Internet: a series of connected computers
World Wide Web: a series of connected web pages

other things besides WWW run on the Internet

you can network computers together
Local area networks
LANs

Internet vs. Intranet

ISP (internet service provider); Time warner; Verizon

World wide web: pages connect together using hyperlinks
hello.html
Hypertext markup language

WinSCP

you can use NOTEPAD to edit web pages
web browser: software that reads and interprets HTML

Hypertext markup language

www.w3schools.com
go to the HTML section
read until HTML elements

a computer that serves up web pages is called a "web server"
they serve those web pages to web clients. an internet browser.

computer cs12
http://cs12.cs.qc.cuny.edu/

protocol: an agreed upon way of communicating
http
hypertext transfer protocol
ftp
file transfer protocol
https
secure hypertext transfer protocol

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

http session
request

the anatomy of a URL
Uniform Resource Locator
http://en.wikipedia.org/wiki/URL

The syntax is
scheme://domain:port/path?query_string#fragment_id

file:///C:/josh/greetings.html

HW: review questions for lecture book chapter 1

IP address
http://en.wikipedia.org/wiki/IP_address

mostly, you are not anonymous