2. Internet and world wide web (www)
Exploring www
Internet service provider
Web site
Web page construction
Web server
Web browser
3. The Internet or “Net” (network of networks) is
the largest computer network in the world
that connects billions of computer users.
The word internet comes from combination
between “interconnection” and “Network”.
Network is a collection of computers and
devices connected via communication
channels and transmission media allow to
share resources (hardware, software, data,
information).
Generally nobody own internet.
4. The World Wide Web, commonly known as the
Web, is a system of interlinked hypertext/
hypermedia documents accessed via the
Internet.
Hypertext is text displayed on a computer or
other electronic device with link to other text
that the reader can immediately access.
Hypermedia is used as a logical extension of the
term hypertext in which graphics, audio, video,
plain text and hyperlinks.
Creator: Timm Berners-Lee, 1989.
5. Internet = collection of networks that
connect millions of businesses, government
agencies, educational institutions, and
individuals.
WWW = the means we use to access
information over the internet
Different communication protocols
Special link (hyperlink) that enable users to jump
from one place to another on the web.
6.
7. The web is the global networked information
system of interlinked computer networks
that serves files formatted in HTML, XML,
PDF, DOC, and other file types.
A document can be static (prepared and
stored in advance) or dynamically generated
(in response to user input).
9. An Internet service provider (ISP), also
sometimes referred to as an Internet access
provider (IAP), is a company that offers its
customers access to the Internet.
10. You must be able to reach all destinations on
the net.
Your packets have to get delivered to every
destination.
Packets from everywhere else have to “find
you”. This is done by having your ISP(s)
advertise routes for you.
11. A set of related web pages, images, videos,
texts or other digital assets typically served
from a single web domain.
It can be accessed from a common URL
called homepage.
A web page is a resource of information
(HTML or XHTML) that is suitable for the
www and can be accessed through a web
browser.
Web pages are requested and served from
web servers using HyperText Transfer
Protocol (HTTP).
13. What you need:
Any text editor to write HTML (NotePad Pro,
Adobe HomeSite, Dreamweaver, etc.)
A web browser to view web pages through
development (chrome, firefox, opera, etc.
Web hosting space: a place to save finished
website.
A domain name: necessary for professional or
commercial sites.
A program for uploading websites: called File
Transfer Protocol (FTP) program
14. HTML (HyperText Markup Language) is the
language in which web pages are written.
Tags are pieces of HTML code: For example, to
make a word, sentence or paragraph bold, we
simply add tags: <b>word</b>
Web pages (individual pages in a website) should
be saved with either .html or .htm extension:
page.html or page.htm
15.
16. A Web server is a program that generates and
transmits responses to client requests for
Web resources.
17. The server can generate the response
message in a variety of ways:
1. The server simply retrieves the file associated
with the URL and returns the contents to the
client.
2. The server may invoke a script that
communicates with other servers or a back-end
database to construct the response message
18. A web browser (commonly referred to as a
browser) is a software application for
retrieving, presenting and traversing
information resources on the World Wide
Web.
19. Most browsers support HTTP Secure and offer
quick and easy ways to delete the web
cache, cookies. and browsing history. For a
comparison of the current security
vulnerabilities of browsers, see comparison
of web browsers.