Ch 8: The Internet and the Web Content - PowerPoint PPT Presentation

Loading...

PPT – Ch 8: The Internet and the Web Content PowerPoint presentation | free to download - id: 1ec043-YjAyY



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Ch 8: The Internet and the Web Content

Description:

What is available on the Internet? How to get connected ... WWW: Internet Explorer, Netscape Navigator. Email: Outlook Express, Netscape Mailer, Eudora Mail ... – PowerPoint PPT presentation

Number of Views:34
Avg rating:3.0/5.0
Slides: 19
Provided by: fredbo9
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Ch 8: The Internet and the Web Content


1
2
CHAPTER
The Internet and the Web
Irfan A. IlyasLecture 23
2
Points to cover
  • Introducing Internet
  • What is available on the Internet?
  • How to get connected with Internet?
  • Main Internet Facilities
  • World Wide Web
  • Electronic Mailing
  • Telnet
  • FTP
  • Gopher
  • Basic Working Model of Internet Services

3
Introducing Internet
  • Internet is
  • a connection of billions of computers (similar/
    dissimilar)
  • AND
  • the technologies (hardware/ software) which makes
    the whole setup interoperable.

4
What is available on the Internet?
  • Internet offers its users many services including
  • Communication with others
  • Using emails, chatting (online messaging)
  • Shopping
  • Buy goods (and sell also)
  • Searching
  • Reading materials from real as well as virtual
    libraries
  • Entertainment
  • Games, Magazines, Interactive games etc.
  • Education (e-learnings)
  • Take online classes, get academic degrees.

5
How to get connected with Internet?
  • Internet Service Provider (ISP)
  • An ISP is a commercial based organization
  • ISP charge their customers on hourly or fixed
    basis (unlimited access)
  • How it works?
  • An ISP already had its computer connected with
    the Internet (backbone)
  • ISP allows their users to get connected with
    their local computer through a modem (telephone
    line)
  • After the user is connected, he becomes a part of
    the Internet (using different services)

6
How to get connected with Internet?
  • Internet Service Providers( ISP )
  • Commercial Organizations
  • Available for all public
  • Centers are locally available to different areas
    saves telephone charges.
  • Examples
  • Saudi Online, Nasjeet etc.
  • Provide their customers with different numbers in
    Riyadh, Dammam, Jeddah etc.
  • University Colleges
  • Only available for University attached people
    (students, faculty, staff)
  • Cannot be used from other localities
  • Example KFUPM Connection

7
How to get connected with Internet?
  • Procedure for an ISP connections
  • Step1 Getting Tel User Account
  • Subscribers are provided with
  • A telephone number to the ISP computer (local to
    the subscribers locality)
  • A username password

Note pre-paid card from commercial ISPs normally
have this information printed over it.
Saudi Online
Saudi Online Prepaid Card with necessary
information printed over it
8
Procedure for an ISP connections
  • Step2 System Setup for a dialup Connection
  • To prepare the subscribers (user) system for the
    connection, one of the following will also be
    provided
  • A step-by-step manual setup procedure
  • OR
  • A small program which will automatically do the
    required setup using a dialogue from the user.

9
Procedure for an ISP connections
  • Step3 Connecting the ISP
  • Using the dialup connection created in the last
    step,
  • Users dial the ISP number
  • System tries to connect (strange noise)
  • A successful connection message appears

10
Procedure for an ISP connections
  • Step4 Using Internet Facilities
  • Users can now start browsing etc.

For more info http//www.saudionline.com
11
Access Providers
  • Common way to attach to the Internet
  • Internet service providers (ISP)
  • National
  • Regional
  • Wireless

12
Main Facilities on Internet
  • World Wide Web
  • WWW allows Internet computers to exchange
    information objects (text/ pictures/ sound etc.)
    among each other through easy to use web pages.
  • WWW is an interface of Internet contents
  • Electronic Mailing
  • Sending and receiving messages using Internet
  • Telnet
  • Running programs on a remote computer (with its
    screen and keyboard control available locally)

13
.Main Facilities on Internet
  • FTP
  • Transferring file from/ to a remote computer on
    the Internet
  • Gopher
  • It allows a client computer to access different
    resources on a server computer using a menu based
    interface (text based menus)
  • Not very popular after Web Interface became
    available.
  • Complex and painful.

14
The Basic Working Model of Different Internet
Services
  • All Internet facilities work on the same
    principle as does the Web Service.
  • A client program is provided to Internet users
  • WWW Internet Explorer, Netscape Navigator
  • Email Outlook Express, Netscape Mailer, Eudora
    Mail
  • FTP Cute FTP for windows,
  • Telnet Microsoft Windows Telnet client

Server Responses
Client Requests
A Server Computer running the server program
15
Example Client Programs
  • Cute FTP for Windows
  • Microsoft Window Telnet Client

16
Working Principle of Different Internet Services
  • A server program must be running on the computers
    providing any related service.
  • Normally available as Operating System Services
  • Services start automatically when windows starts

Service handling a Telnet Server Facility
Service handling a WWW Server Facility
17
Working Principle of Different Internet Services
  • The transaction mechanisms needed in each service
    will be different but already standardized
  • Email Simple Mail Transfer Protocol (SMTP)
  • FTP File Transfer Protocol (FTP)
  • Gopher Gopher Protocol
  • Web Hyper Text Transfer Protocol (http)

18
(No Transcript)
About PowerShow.com