Chapter 2: The Internet, the the Web, and Electronic Commerce

advanced research project agency network ARPANET 

1969 connected computers at 4 universities 

worldwide web www web was introduced in 

1991

web 1.0

search engines

created and altered by programmers

web 2.0

social media, websites

post without programming skills

web 3.0

programs identify relationships between data 

alexa and google assistant 

web 4.0 

mobile web 

mobile devices 

web 5.0

AI

emotional web

internet

physical network

wires, cables, satellites and rules for exchanging info between computers

being online 

being connected to the network 

web (vs internet)

multimedia interface to the resources available on internet

most common uses of internet and web

communicating

shopping

searching

education

online entertainment

internet service provider ISP

provides access to internet 

att

comcast

tmobile 

verizon 

how do users connect to isp

digital subscriber line

cable

wireless modems

digital subscriber line dsl

provides high-speed connection using existing telephone lines

cable 

cords used to connect input and output devices to system unit 

wireless modems

small plug-in usb or express-card device that provides very portable high-speed connectivity from virtually anywhere 

browsers 

software connecting you to remote computers 

used by mobile devices 

mobile browsers

designed for smaller mobile devices

desktop browsers

designed for laptop and desktop computers

uniform resource locations url

address/location of web resources

urls 2 basic parts

protocol- https most common

domain name

top-level domain tld aka web suffix

last part of domain name identifying type of organization

types of web organizations 

.com commercial 

.edu educational 

.gov government 

.mil military 

.net network 

.org organization 

hypertext markup language html

markup language for displaying web pages

hyperlinks/links

connect to other documents containing related information

text files, graphic images, audio, and video

technologies used for highly interactive and animated websites 

javascript 

php 

cascading style sheets 

javascript

used in html docs to trigger interactive features

php

used in html docs to improve a websites interactivity

executes on website’s computer

cascading style sheets css 

separate files referenced by html doc that controls appearance of a web page