Session no 2 For BZU

Session No 2The Internet andWorld Wide Web

04/07/23 1Developed By: Saif Ullah Dar

Chapter 2 Objectives

Discuss how the Internet works

Understand ways to access the Internet

Identify a URL

Know how to search for information on the Web

Describe the types of Web pages

Define Webcasting

Describe the uses of electronic commerce (e-commerce)

Identify the tools required for Web publishing

Explain how e-mail, FTP, newsgroups and message

boards, mailing lists, chat rooms and instant messaging work

Identify the rules of netiquetteRecognize how Web pages use

graphics, animation,audio, video, and virtual realityp. 2.2

Next


The Internet

What is a network? A collection of

computers and devices connected together via communications devices and media• Modems• Cables• Telephone lines• Satellites

p. 2.2

Next


The Internet

What is the Internet?

Also called the Net A worldwide

collection of networks that links millions of businesses, government agencies, educational institutions, and individuals

p. 2.2

Next


message board

instant messaging

file transfer

e-mailWeb

The InternetWhat are some of the services found on the Internet?

chat

p. 2.3 Fig. 2-1

Next


Goal:To function even if part of the network

were disabled or destroyed

Became functional

in September

1969

Goal:To allow scientists at different locations to

share information and work together

on military and scientific projects

History of the Internet

How did the Internet originate?

ARPANET

Networking project by Pentagon’s

Advanced Research Projects Agency

(ARPA)

p. 2.3

Next



What is a host node? Also called a host Any computer that

directly connects to a network

Often stores and transfers data and messages

Provides network connections for other computers

Four original nodes on ARPANET

University of California at Los Angeles

University of California at

Santa Barbara

University of Utah

Stanford Research Institute

p. 2.4

Next


Today

More than 100 million host nodes


How has this network grown?

1984

More than 1,000 host nodes

1969

Four host nodesp. 2.4

Next



What is NSFnet? The National Science Foundation’s network Five supercomputer centers Connected to ARPANET in 1986

NSFnet ARPANET

The Internet

p. 2.4

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Government

Cable companies

Satellite companies

Telephone companies


Who provides the structure for the Internet today?

Networks from corporations, commercial

firms, and other companies

p. 2.4

Next


World Wide Web Consortium (W3C)

• Oversees research and sets standards and guidelines

Internet2 (I2)

• Internet-related research and development project

• Develops and tests advanced Internet technologies


Who controls the Internet? The Internet is a public, cooperative, and

independent network No single entity controls or owns the Internet Several organizations advise and define

standards

p. 2.4

Next


Technology Trailblazer

Tim Berners-Lee Created the World Wide Web Director of the

World Wide Web Consortium (W3C) at MIT

Click to view Web Linkthen click Tim Berners-Lee

p. 2.4

Next


http://scsite.com/dc2002/people.htm

How the Internet Works

What is an Internet service provider (ISP)? A business that

has a permanent Internet connection

Provides temporary connections to individuals and companies for free or for a fee

Regional ISP

Provides access to the Internet through one or

more telephone numbers local to a specific

geographic location

National ISP

Provides local telephone numbers in most major cities

and towns nationwide

May also provide a toll-free numberp. 2.5

Next



What is a point of presence (POP)?

An access point on the

Internet Accessed by

dialing a telephone number

Select a service provider with at least one local POP telephone

numberp. 2.5

Next


Wireless Service Provider

• Company that provides wireless Internet access

Online Service Provider (OSP)

• Supplies Internet access

• Has many members- only features that offer special content


What are other service providers?

Click to view Web Linkthen click Service Providers

p. 2.5

Next


Company on the Cutting Edge

America Online

World’s leading online service provider Services include electronic

mail, software, computer support services, Internet access

Click to view Web Linkthen click AOL

Founded in 1985 by Stephen M. Case

p. 2.6

Next


What are ways to access the Internet?

1

local call

long-distance call

12

local call

local call

long-distance call toll-free call

12

3

local call

local call

local call



1 Regional Internet Service Provider’s POP

2 National Internet Service Provider’s POP

3 Online Service’s Local POPOnline Service (special members-only content)

4 Wireless Internet Service Provider

412

3

local call

local call

local call

local call


p. 2.5 Fig. 2-2

Next


High speed connection• Employees and students• Computers part of a local area network (LAN)• Connect to service provider through a high-speed connection

line leased from local telephone company


How can you connect to the Internet?

Dial-up access• Home or small business • Computer, modem, regular telephone line• Dial into an ISP or OSP

Newer high-speed technologies• Home and small business • Digital subscriber line (DSL) – provides high-speed Internet

connections over regular copper telephone line• Cable modem- provides high-speed Internet

connections through cable television networkp. 2.6

Next


Backbone• Inner structure

of the Internet• Communications

lines that carry the heaviest amount of traffic


What are three parts of an Internet connection?Server

• Computer that manages the resources on a network

• Provides a centralized storage area for resources such as programs and data

• Also called a host computer

Client• Computer that

can access the contents of the storage area on the server

Click to view Web Linkthen click Internet Backbone

p. 2.6

Next


How might data travel the Internet using a telephone line connection?

Step 1Step 1Step 2

Step 1Step 2

Step 3

Step 1Step 2

Step 3

Step 4

Regional ISP

Step 1Step 2

Step 3

Step 4

Step 5

Regional ISP

National ISP

Step 1Step 2

Step 3

Step 4

Step 5

Step 6

Regional ISP

National ISP

National ISP

Internet backbone

Step 1Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Regional ISP

Local ISP

National ISP

National ISP

Internet backbone


Step 1Step 2

Step 3

Step 4

Step 5

Step 6

Step 7

Step 8

Regional ISP

Local ISP

National ISP

National ISP

Internet backbone

1: You initiate an action to request data from the Internet.

2: A modem converts the digital signals from the computer into analog signals, which are understood by telephone lines.

3: Data (request) travels through telephone lines to a local ISP.

4: Data may pass through one or more routers before reaching its final destination.

5: The regional ISP uses lines, leased from a telephone company, to send data to a national ISP.

6: The national ISP routes data across the country to another national ISP.

7: Data moves from a national ISP to a local ISP and then to a destination server.

8: The server retrieves the requested data and sends it back through the Internet backbone to your computer.

p. 2.7 Fig. 2-3

Next



What is an Internet protocol (IP) address? Number that uniquely identifies each computer or

device connected to the Internet Four groups of numbers, each separated by a period Number in each group is between 0 and 255

IP address 199.95.72.10

first part identifies network

last part identifies specific

computer

p. 2.8 Fig. 2-4

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What is a domain name? Text version of an IP address Components are separated by periods Each domain name represents one or more IP

addresses

IP address 199.95.72.10Domain name www.scsite.com

p. 2.8 Fig. 2-4

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What is a top-level domain (TLD) abbreviation? Identifies the type of organization associated

with the domain Sometimes called dot com when TLD is com

p. 2.8 Fig. 2-5

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Internet Corporation for Assigned Names and Numbers (ICANN)

Group that assigns and controls TLDs


What systems control domain names?

Domain name system (DNS)System on the Internet that stores the

domain names and their corresponding IP addresses DNS server

Translates the domain name into its associated IP

addressp. 2.8

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The World Wide Web

What is the World Wide Web (WWW)? Also known as the Web A worldwide collection of electronic documents Each document on the Web is called a Web page Can contain text, graphics, sound, and video Can contain built-in connections to other documents A Web site is a collection of related Web pages

p. 2.9

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The World Wide Web

What is a Web browser? Also called a browser Software

program that allows you to access and view Web pages

Two popular browsers for personal computers• Netscape• Internet

Explorerp. 2.9 Fig. 2-6

Next


How can you establish a connection and start the Web browser?

Step 1

Internet Explorer icon

Step 1

Step 2

Step 1

Step 2

Step 3

The World Wide Web

1 Double-click an icon on the desktop, such as Internet Explorer, to start your browser.

2 If you are not connected to the Internet already, your computer attempts to establish a connection with a service provider. If necessary, click the Connect button.

3 Connection to the Internet occurs and a home page displays. Shown here is an AOL home page. Your home page may vary.

p. 2.10 Fig. 2-7

Next


The World Wide Web

What is a home page? Starting page for a browser Provides

information about the site’s purpose and content

Some Web sites also refer to their starting page as a home page

May be changed at any time

p. 2.10

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The World Wide Web

What is downloading?The process of receiving

information, such as a Web page, onto your computer

from a server on the Internet

Can take from a few seconds to several minutes

You can speed up the display of pages by turning off the graphics and displaying only

text in most Web browsersp. 2.11

Next


Microbrowser for a Web-enabled handheld computer

Microbrowser for a Web-enabled cellular telephone

The World Wide WebHow do Web-enabled handheld computers and devices

access the Web? Use a special type

of browser designed for their small screens

Microbrowser – software program that accesses and displays Web pages that contain mostly text

Also called a minibrowser

p. 2.11 Fig. 2-8

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The World Wide Web

What is a hyperlink?

Also called a link Built-in

connection to another related Web page or part of a Web page

Allows you to obtain information in a nonlinear wayClick to

viewanimation

p. 2.12

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The World Wide Web

How can you identify a link? Link can be a word, phrase, or image Text links usually are underlined or in a color

different from the rest of the document A graphical link may change its appearance when

you point to it The shape of the pointer on

the screen changes to a small hand with a pointing index finger when you position it on a link or point to the link

Click the link to activate itp. 2.12

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pointer

Some links display a different color when you point to them. Click the link to display its associated Web site or Web page.

pointer

Some links are underlined. Click the link to display the associated Web site or Web page.

pointer

Some links are graphical images. Click the link to display its associated Web site or Web page.

The World Wide Web

How do you navigate a variety of links?

p. 2.12 Fig. 2-9

Next


The activity of jumping from one Web page to another is surfing

The World Wide WebWhat is surfing the Web?

Links can point to an item on the same Web page, a different Web page at the same Web site, or a separate Web page at a different Web site in another city or country

p. 2.12

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The World Wide Web

What is a Uniform Resource Locator (URL)? Unique address for a Web page Browser retrieves a Web page by using the URL Also called a Web address Type the URL into the address text box on the browser

and press the Enter key to display a Web page

http://www.nationalgeographic.com/travel/index.html

address text boxp. 2.13 Fig. 2-10

Next


The World Wide Web

What are the parts of a URL?

protocol domain name path

Click to view Web Linkthen click URLs


p. 2.13 Fig. 2-10

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The World Wide Web

What is a Web server? A computer that delivers (serves)

Web pages you request The same Web server can store

multiple Web sites

p. 2.13 Fig. 2-10

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The World Wide Web

What is a search engine? A software program you can use to find Web

sites, Web pages and Internet files

Search text

A word or phrase entered in the search

engine’s text box

Also called keywords

Spider

A program that reads pages on Web sites in

order to find Web pages that contain the

search text

Also called a crawler or bot

Click to view video

p. 2.14

Next


The World Wide WebWhat is a hit? Any Web page name that lists

as the result of a search

hit

363 hits

p. 2.14 Fig. 2-11

Next


The World Wide Web

What are some widely used search engines?

p. 2.15 Fig. 2-12

Next


The World Wide Web

What is a directory? An organized

set of topics Used by a

search engine to aid in locating Web sites

Each major topic has related subtopics

p. 2.15 Fig. 2-13

Next


The World Wide Web

What are the six basic types of Web pages?

advocacy Web page

informational Web page

business/marketing Web page

news Web page

personal Web page

portalWeb page

p. 2.16

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The World Wide Web

What is an advocacy Web page? Contains

content that describes a cause, opinion,or idea

Purpose is to convince the reader of the validity of the cause, opinion, or idea

p. 2.16 Fig. 2-14a

Next


The World Wide Web

What is a business/marketing Web page? Contains

content that promotes or sells products or services

Often allows you to purchase products or services online

p. 2.16 Fig. 2-14b

Next


The World Wide Web

What is an informational Web page? Contains

factual information

Many U.S. government sites provide information

p. 2.16 Fig. 2-14c

Next


The World Wide Web

What is a news Web page? Contains

newsworthy material

Stories and articles relating to current events, life, money, sports, and the weather

p. 2.16 Fig. 2-14d

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The World Wide Web

What is a portal Web page

Often called a portal

Offers a variety of Internet services from a single, convenient location

p. 2.16 Fig. 2-14e

Next


maps

stock quotes

reference tools

sports and weather

search engine

The World Wide Web

What services are often found on a portal?

local , national, and

worldwide news

free personal

Web pages

e-mail

instant messaging

calendars

shopping malls and auctions

newsgroups or message

boards

chat rooms

p. 2.17

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The World Wide Web

What is a Web community? A Web site that joins a specific group of

people with similar interests or relationships Usually offer special services to facilitate

communication among members

newsgroup or message

board e-mail online photo

albumschat roomp. 2.17

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The World Wide Web

What is a wireless portal? A portal specifically designed for

Web-enabled handheld computers and devices

Attempts to provide all information a wireless user might require

Services include search engines, news, stock quotes, weather, maps, e-mail, calendar, instant messaging, and shopping

p. 2.17

Next


Company on the Cutting Edge

Yahoo! Co-founded by Jerry Yang and David Filo

in 1994

Click to view Web Linkthen click Yahoo!

Started as a series of lists to organize favorite Web sites

Today more than 166 million visitors access 189 million pages dailyp. 2.17

Next


The World Wide Web

What is a personal Web page? A Web page

maintained by a private individual who normally is not associated with any organization

Reasons: job hunting and sharing life experience with the world

p. 2.17 Fig. 2-14f

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virtual reality

The World Wide Web

What is multimedia? Any application that integrates text with

other media elements

graphics

audioanimation video

Often used for Web pages to add appeal Multimedia Web pages often require more

time to download because they contain large graphics and video or audio clips

p. 2.18

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The World Wide Web

What is a graphic? Also called a

graphical image A digital

representation of information such as a drawing, chart, or photograph

First media used to enhance text-based Internet

p. 2.18 Fig. 2-15

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The World Wide Web

What are the formats for graphics files on the Web?

p. 2.18 Fig. 2-16

Next


GIF (Graphics Interchange Format)

Also uses compression techniques to reduce file size

Works best for images with only a few distinct colors, such as line drawings, single-color borders, and simple cartoons

The World Wide Web

JPEG (Joint Photographic Experts

Group)

Graphical image that uses compression techniques to reduce the file size

Smaller sizes result in faster downloading of Web page

The more compressed the file, the smaller the file, but the lower the quality

Which two formats are most popular for the Web?

p. 2.19

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The World Wide Web

What is a thumbnail? A small version of a

larger graphical image

Used because graphics files can be time consuming to display

Usually click thumbnail to display the full-sized image

p. 2.19 Fig. 2-17

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The World Wide Web

What is animation? The appearance of motion

created by displaying a series of still images in rapid sequence

Adds visual interest or draws attention to important information or links

Animated GIF uses computer animation and graphics software to combine several images into a single GIF file

p. 2.19

Next


* * * * * * * add * * * * add inte * * * * add interest * * * * add interest with * * * * add interest with anim * * * * add interest with animation * * * * add interest with animation * * ** * * * add interest with animation * * * * add interest with animation * * * * interest with animation * * * * rest with animation * * * * with animation * * * * animation * * * * tion * * * * * * * *

The World Wide Web

What is a marquee?

Text that animates by scrolling across the screen

Pronounced mar-KEE

p. 2.19

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Click icon to hear audio clip. Press the Esc key to cancel.

The World Wide Web

What is audio? Music, speech, or

any other sound Individual sound

files that you download to your computer

music

speech

other sound

p. 2.20

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The World Wide Web

What is MP3? A popular technology

that compresses audio Reduces an audio file

to about one-tenth of its original size while preserving the original quality of the sound

MP3 file are easily copied from the Web

Controversy with respect to copyright infringement

p. 2.20

Next


plays music stored on CD

plays music stored on clik! disk

plays music stored on CD

The World Wide Web

How can you play MP3 files? Most current operating

systems contain a program called a player • plays audio in MP3

files on your computer

Portable audio devices called MP3 players • play MP3 files stored

on CD or miniature storage media

Click to view Web Linkthen click MP3

p. 2.20 Fig. 2-18

Next


The World Wide Web

What is streaming audio? Also called streaming sound Enables you to listen to the

sound as it downloads Many radio and television

stations use streaming audio to broadcast

Two accepted standards• Windows Media Player• RealAudio – a component

of RealPlayer

Click to view Web Linkthen click Streaming Media

p. 2.21 Fig. 2-19

Next


The World Wide Web

What is video? Consists of full-

motion images that are played back at various speeds

Most video also has accompanying audio

video

p. 2.22 Fig. 2-20

Next


The World Wide Web

What video formats are used on the Web?

MPEG standard(Moving Pictures Experts Group)

Individual video files that you must download completely before you can play them on the computer

Streaming videoAllows you to

view longer or live video images as they download to your computer

Two widely used standards

• RealVideo – a component of RealPlayer

• Windows Media Player

p. 2.22

Next


The World Wide Web

What is a Web cam? Also called a

cam A video camera

whose output displays on a Web page

Shows images that change regularly

Web camp. 2.22

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The World Wide Web

What is virtual reality (VR)? The use of computers to simulate a real or imaged

environment that appears as a three-dimensional (3D) space

VR world – a 3-D site that contains infinite space and depth

Used for games as well as many practical applications

p. 2.22 Fig. 2-21

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The World Wide Web

What is pull and push technology?Pull

Obtaining information by requesting it from a site

Relies on a client to request a Web page from a server

PushServer automatically

downloads content to your computer at regular intervals

ticker tape pushed to desktop from Microsoft Investor Web site

p. 2.23 Fig. 2-22

Next


The World Wide Web

What is Webcasting? Another name for push technology Delivers information at regular intervals without you

having to request it Information can be viewed whether you are online or

offline

ticker tape pushed to desktop from Microsoft Investor Web site

p. 2.23

Next


A financial business transaction that occurs over an electronic network such as the Internet

Electronic Commerce

What is electronic commerce? Also known as e-commerce

p. 2.24 Fig. 2-23

Next


Electronic Commerce

What are the three types of e-commerce?Business to consumer

(B-to-C or b2C)Sale of goods to the general public

Consumer to consumer(C-to-C or C2C)

One consumer sells directly to another

Business to business(B-to-B or B2B)

Businesses providing goods and services to other businessesp. 2.25

Next


Electronic Commerce

What are some features of e-commerce? Electronic storefront

• The place where a customer visits an online business

Shopping cart• Allows the customer to

collect purchases Online auction

• Site where you can bid on an item being sold by someone else

Click to view Web Linkthen click E-Commerce

p. 2.25

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Masayoshi Son Helped to bring Japan to the forefront of the

digital age Founded Softbank Corporation in 1981

Click to view Web Linkthen click Masayoshi Son

By 1995, Softbank controlled one-half of the personal computer software in Japan

A leading member of Japan’s Prime Minister’s IT Strategy Councilp. 2.25

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Web Publishing

The development and maintenance of Web pages

Step 1Step 1 Step 2Step 1 Step 2

Step 3

Step 1 Step 2

Step 3Step 4

Step 1 Step 2

Step 3Step 4

Step 5

1 Plan: Think about issues that could affect the design of the Web site.2 Analyze and Design: Sketch a design of the Web page on paper.3 Create: Create the Web site in a software package such as word processing.4 Deploy: Copy (upload) the Web site from your hard disk to a Web server.5 Maintain: Visit and revise your Web site regularly to be sure it is working and current.

What is Web Publishing?

p. 2.26 Fig. 2-24

Next


Web Publishing

Hardware• Digital camera

• Scanner

• Sound card

• Microphone

• PC camera

What is needed for creating a Web page? Also called Web page authoring

Software to prepare HTML• HTML (hypertext markup

language)

• A set of special codes that format a file for use as a Web page

• Created with either:

• Word processing package

• Web page authoring softwarep. 2.26

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Web PublishingWhat is a plug-in?

An additional program that extends the capability of a browser

Many plug-ins can be downloaded at no cost from the Web

Click to view Web Linkthen click Plug-ins

p. 2.28 Fig. 2-25

Next


Upload, or copy, the site to the Web server

Locate a Web server to store your

site• Provided by many

ISPs and OSPs at no additional cost

• Provided by a Web hosting service for a monthly fee

Web Publishing

How do you deploy a Web site?

Click to view Web Linkthen click Web Publishing

p. 2.29

Next


Apply to an official registrar

for a specific domain name

Register site with search engines

using a submission

service • A Web-based

business that helps register your site

Webmaster

Individual responsible for

maintaining a Web site and developing

Web pages

Web PublishingWhat else might be needed to create a Web site?

Click to view Web Linkthen click Submission Services

p. 2.29

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Other Internet Services

What is e-mail? Electronic mail The transmission of messages and files via a

computer network Use an e-mail program to work with messages

create

receivestore print

sendforward

delete

Click to view Web Linkthen click E-mail

p. 2.31

Next


Step 1Step 1

Step 2

Step 1

Step 2

Step 3

Step 1

Step 2

Step 3Step 4

How do you send an e-mail message?

Other Internet ServicesStep 1

Step 2

Step 3Step 4

Step 5

1 Start an e-mail program and point to the New Mail Message button

2 Click the New Mail Message button to display the Message window

3 Enter the recipient’s e-mail address, the subject, and the message in the Message window

4 Click the Insert File button to attach a JPG file containing a picture to the message. Locate the file on your hard disk and click its name. An icon for the file displays. Click the Send button to send the message.

5 When Sally receives the e-mail message, she opens the JPG file to view the picture.

p. 2.30 Fig. 2-26

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What is an Internet e-mail address? A combination of a user name and a domain name

that identifies a user so he or she can receive Internet e-mail

user name or user-IDA unique combination of

characters that identifies you

at domain nameIdentifies the mail server

p. 2.31 Fig. 2-27

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mail server

The server that contains the mailboxes


How can you get e-mail? Most ISPs and OSPs provide an Internet e-mail

program and a mailbox on a mail server as a standard part of their Internet access services

Some Web sites provide e-mail services free of charge

address book

Allows you to store a list of names and e-mail addresses

mailbox

Storage location usually residing on the computer that connects you to the

Internetp. 2.33

Next



What is a POP server? Post office protocol server When a message arrives

at the recipient’s mail server, the message transfers to a POP or POP3 server

POP server holds an e-mail message until the recipient retrieves it with his or her e-mail software

POP3 is the newest version

p. 2.32

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Step 1Step 1

Step 2

mail server

Step 1

Step 2

Step 3

Internet routers

mail server

mail server

Step 1

Step 2

Step 3

Step 4

Internet routers

mail server

mail server

POP server


How does an e-mail message travel?

Step 1

Step 2

Step 3

Step 4

Step 5

Internet routers

mail server

mail server

POP server

1 Using e-mail software, you create and send a message.2 Your software contacts software on your service provider’s mail server.

3 Software on the mail server determines the best route for the data and sends the message, which travels along Internet routers to the recipient’s mail server.

4 The mail server transfers the message to a POP3 server.

5 When the recipient uses e-mail software to check for e-mail messages, the message transfers from the POP3 server to the recipient’s computer.

p. 2.32 Fig. 2-28

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file download window

What is FTP? File Transfer Protocol An Internet

standard that allows you to upload and download files with other computers on the Internet

p. 2.33 Fig. 2-29

Next



What are some FTP terms?FTP server

A computer that allows users to

upload and download files

using FTPFTP site

A collection of files that reside on

an FTP server anonymous FTP

Anyone can transfer some, if not all, available

filesp. 2.33

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UsenetThe entire collection of Internet newsgroups


What is a newsgroup? An online area in which users conduct written

discussions about a particular subject A user sends a message to the newsgroup Other users in the newsgroup read and reply

to the message

news serverA computer that stores

and distributes newsgroup messagesp. 2.33

Next



What is a newsreader?

articleA previously entered message

postAdd an article to a news group

threadAlso called threaded discussion

The original article and all subsequent related replies

A program that enables you to access a newsgroup

p. 2.33

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What is a message board?

Click to viewWeb Linkthen click Newsgroups and Message Boards

Also called a discussion board

A type of discussion group that does not require a newsreader

p. 2.34 Fig. 2-30

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What is a mailing list?

A group of e-mail names and addresses given to a single name

When a message is sent to a mailing list, every person on the list receives a copy of the message

Subscribe or unsubscribe to mailing list to add or remove your name from the mailing list

Some are known as LISTSERVsp. 2.34 Fig. 2-31

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What is a chat? A real-time typed

conversation that takes place on a computer

Real-time means that you and the people with whom you are conversing are online at the same time

A chat room is a location on an Internet server that permits users to chat

Click to view Web Linkthen click Chat Rooms

A chat client is a program on your computer that allows you to chat

p. 2.35 Fig. 2-32

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Lavonne Luquis Journalist Started LatinoLink,

the first general interest Web magazine for Latinos

Now known as Latino.com

More that 280,000 visitors each month

Click to view Web Linkthen click Lavonne Luquis

p. 2.35

Next


message sent from Karen to Katy

Karen’s message immediately displays on Katy’s computer screen because she is online

Katy’s response to Karen


What is instant messaging (IM)? A real-time Internet

communications service• Notifies you when

one or more people are online

• Allows you to exchange messages or files or join a private chat with them

Click to view Web Linkthen click Instant Messaging

p. 2.36 Fig. 2-33

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NetiquetteGolden Rule: Treat others as you would like them to treat you.

• Use emoticons to express emotion

: ) Smile

: ( Frown

: l Indifference

:\ Undecided

:o Surprised

• Use abbreviations for phrases such as

BTW by the way

FYI for your information

FWIW for what it’s worth

IMHO in my humble opinion

TTFN ta ta for now

TYVM thank you very much

2.Read the FAQ (frequently asked questions)

3.Use your user name for your personal use only

4.Do not assume material is accurate or up to date

5.Never read someone’s private e-mail

• Avoid sending or posting flames, which are abusive or insulting messages

• Do not participate in flame wars, which are exchanges of flames

1.In e-mail, newsgroups, and chat rooms:

• Keep messages brief

• Use proper spelling and grammar

• Be polite

• Avoid offensive language

• Do not use all capital letters which is the equivalent of SHOUTING!

• Clearly identify a spoiler: a message that reveals a solution to a game or ending to a movie or program

• Avoid sending spam, or an unsolicited message sent to many recipients at once. Considered Internet junk mail.


What is netiquette? Internet

etiquette Code of

acceptable behaviors users should follow while on the Internet

Click to view video

p. 2.37 Fig. 2-34

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Summary of the Internet and World Wide Web The Internet

History of the Internet How the Internet works The World Wide Web Electronic commerce Web publishing Other Internet services Netiquette

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Chapter 2 Complete


Education

Session no 2 For BZU