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Chapter 2The Internet andWorld Wide Web
p. 2. 2
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 reality
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
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
message board
instant messaging
file transfer
Web
The Internet
What are some of the services found on the Internet?
p. 2.3 Fig. 2-1
chat
History of the Internet
p. 2.3
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
How did the Internet originate?
ARPANET
Networking project by Pentagon’s
Advanced Research Projects Agency
(ARPA)
History of the Internet
What is a host node? Also called a hub 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 ARPANETp. 2.4
University of California at Los Angeles
University of California at
Santa Barbara
University of Utah
Stanford Research Institute
Today
More than 100 million host nodes
History of the Internet
How has this network grown?
p. 2.4
1984
More than 1,000 host nodes
1969
Four host nodes
History of the Internet
What is NSFnet?
p. 2.4
The National Science Foundation’s network Five supercomputer centers Connected to ARPANET in 1986
NSFnet ARPANET
The Internet
Government
Cable companies
Satellite companies
Telephone companies
History of the Internet
Who provides the structure for the Internet today?
p. 2.4
Networks from corporations, commercial
firms, and other companies
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
History of the Internet
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
Technology Trailblazer
Tim Berners-Lee Created the World Wide Web
p. 2.4
Director of the World Wide Web Consortium (W3C) at MIT
Click to view Web Linkthen click Tim Berners-Lee
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
p. 2.5
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 number
How the Internet Works
What is a point of presence (POP)?
p. 2.5
An access point on the
Internet Accessed by
dialing a telephone number
Select a service provider with at least one local POP telephone
number
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
How the Internet Works
What are other service providers?
p. 2.5
Click to view Web Linkthen click Service Providers
Company on the Cutting Edge
America Online
World’s leading online service provider Services include electronic
mail, software, computer support services, Internet access
p. 2.6
Click to view Web Linkthen click AOL
Founded in 1985 by Stephen M. Case
What are ways to access the Internet?
1
local call
long-distance call
12
local call
local call
long-distance calltoll-free call
12
3
local call
local call
local call
long-distance call toll-free call
How the Internet Works
p. 2.5 Fig. 2-2
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
41
2
3
local call
local call
local call
local call
long-distance call toll-free call
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 the Internet Works
How can you connect to the Internet?
p. 2.6
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 connections over regular copper telephone line
• Cable modem- provides connection through cable television network
Backbone• Inner structure
of the Internet• Communications
lines that carry the heaviest amount of traffic
How the Internet Works
What are three parts of an Internet connection?
p. 2.6
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 Backbone
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
How the Internet Works
p. 2.7 Fig. 2-3
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 a destination server.
8: The server retrieves the requested data and sends it back through the Internet backbone to your computer.
How the Internet Works
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
p. 2.8 Fig. 2-4
IP address 199.95.72.10
first part identifies network
last part identifies specific
computer
How the Internet Works
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
p. 2.8 Fig. 2-4
IP address 199.95.72.10
Domain name www.scsite.comidentifies top-level domain
How the Internet Works
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
Internet Corporation for Assigned Names and Numbers (ICANN)
Group that assigns and controls TLDs
How the Internet Works
What systems control domain names?
p. 2. 8
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
address
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
The World Wide Web
What is a Web browser? Also called a browser Software program that allows you to access and
view Web pages
p. 2.9 Fig. 2-6
Two popular browsers for personal computers• Netscape• Internet
Explorer
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
p. 2.10 Fig. 2-7
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.
The World Wide Web
What is a home page? Starting page for a browser Provides information about the site’s purpose and
content
p. 2.10
Some Web sites also refer to their starting page as a home page
The World Wide Web
What is downloading?
p. 2. 11
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 browsers
Microbrowser for a Web-enabled handheld computer
Microbrowser for a Web-enabled cellular telephone
The World Wide Web
How 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
The World Wide Web
What is a hyperlink?
Also called a link Built-in
connection to another related Web page or part of a a Web page
Allows you to obtain information in a nonlinear way
p. 2.12
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
p. 2.12
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 it
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
p. 2.12 Fig. 2-9
How do you navigate a variety of links?
The World Wide Web
What 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
The activity of jumping from one Web page to another is surfing
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
p. 2.13 Fig. 2-10
http://www.nationalgeographic.com/travel/index.html
address text box
The World Wide Web
What are the parts of a URL?
p. 2.13 Fig. 2-10
protocol domain name path
http://www.nationalgeographic.com/travel/index.html
Click to view Web Linkthen click URLs
The World Wide Web
What is a Web server? A computer that delivers
(stores) Web pages you request The same Web server can store
multiple Web sites
p. 2.13 Fig. 2-10
http://www.nationalgeographic.com/travel/index.html
The World Wide Web
What is a search engine? A software program you can use to find Web
sites, Web pages and Internet files
p. 2.14
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
The World Wide WebWhat is a hit?
Any Web page name that lists as the result of a search
p. 2.14 Fig. 2-11
hit
363 hits
The World Wide Web
What are some widely used search engines?
p. 2.15 Fig. 2-12
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
The World Wide Web
What are the six basic types of Web pages?
p. 2.16
advocacy Web page
informational Web page
business/marketing Web page
news Web page
personal Web page
portalWeb page
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
The World Wide Web
What is a business/marketing Web page? Contains
content that promotes or sells products or services
Often allow you to purchase products or services online
p. 2.16 Fig. 2-14b
The World Wide Web
What is an informational Web page?
Contains factual information
p. 2.16 Fig. 2-14c
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. 2.17 Fig. 2-14d
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. 2.17 Fig. 2-14e
reference tools
sports and weather
search engine
The World Wide Web
What services are often found on a portal?
p. 2. 17
local , national, and
worldwide news
free personal
Web pages
instant messaging
calendars
shopping malls and auctions
newsgroups or message
boards
chat rooms
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
p. 2.17
newsgroup or message
board e-mail online photo
albumschat room
The World Wide Web
What is a wireless portal?
A portal specifically designed for Web-enabled handheld computers and devices
Attempt 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
Company on the Cutting Edge
Co-founded by Jerry Yang and David Filo in 1994
p. 2.17
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 daily
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, sharing life experience with the world
p. 2.17 Fig. 2-14f
virtual reality
The World Wide Web
What is multimedia? Any application that integrates text with
other elements 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
graphics
audioanimation video
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
The World Wide Web
What are the formats for graphics files on the Web?
p. 2.18 Fig. 2-16
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
GIF (Graphics Interchange Format)
Also uses compression techniques to reduce file sizes
Works best for images with only a few distinct colors, such as line drawings, single-color borders, and simple cartoons
The World Wide Web
Which two formats are most popular for the Web?
p. 2.19
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
The World Wide Web
What is animation? The appearance of motion
created by displaying a series of still images in rapid sequence
p. 2.19
Can make Web pages more visually interesting or draw attention to important information or links
Animated GIF uses computer animation and graphics software to combine several images into a single GIF file
* * * * add interest with animation * * * *
The World Wide Web
What is a marquee?
Text that animates by scrolling across the screen
Pronounced mar-KEE
p. 2.19
* * * * add interest with animation * * * * * * * * add interest with animation * * * * * * * * add interest with animation * * * * * * * * add interest with animation * * * *
The World Wide Web
What is audio?
Music, speech, or any other sound
Individual sound files that you download to your computer
p. 2.20
music
speech
other sound
Click icon to hear audio clip. Press the Esc key to cancel.
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
p. 2.20
Click to view video
Controversy with respect to copyright infringement
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
p. 2.20 Fig. 2-18
Click to view Web Linkthen click MP3
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
p. 2.21 Fig. 2-19
Click to view Web Linkthen click Streaming Media
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
p. 2.22 Fig. 2-20
video
The World Wide Web
What video formats are used on the Web?
p. 2.22
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 of live video images as hey download to your computer
Two widely used standards
• RealVideo – a component of RealPlayer
• Windows Media Player
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
p. 2.22
Web cam
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
p. 2.22 Fig. 2-21
VR world – a 3-D site that contains infinite space and depth
Used for games as well as many practical applications
The World Wide Web
What is pull and push technology?
p. 2.23 Fig. 2-22
PullObtaining information by
requesting it from a siteRelies 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
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
p. 2.23
ticker tape pushed to desktop from Microsoft Investor Web site
Electronic Commerce
What is electronic commerce? Also known as e-commerce
p. 2.24 Fig. 2-23
A financial business transaction that occurs over an electronic network such as the Internet
Electronic Commerce
What are the three types of e-commerce?
p. 2.25
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 businesses
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
p. 2.25
Click to view Web Linkthen click e-Commerce
Technology Trailblazer
Masayoshi Son Helped to bring Japan to the forefront of the
digital age Founded Softbank Corporation in 1981
p. 2.25
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 Council
p. 2.26 Fig. 2-24
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?
Web Publishing
p. 2.28
Use a current word processing program
Hardware
• Digital camera
• Scanner
• Sound card
• Microphone
• PC camera
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 software
What is needed for creating Web page? Also called Web page authoring
Web Publishing
What 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
p. 2.28 Fig. 2-25
Click to view Web Linkthen click Plug-ins
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?
p. 2.29
Click to view Web Linkthen click Web Publishing
Apply to an official registrar
for a specific domain name
Register site with search engines
• Submission service: a Web-based business that helps register your site
Webmaster
Individual responsible for maintaining a Web
site and developing Web pages
Web Publishing
What else might be needed to create a Web site?
p. 2.29
Click to view Web Linkthen click Submission Services
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 Messages can be simple text or include an attachment
such as a graphical image or word processing document
p. 2.31
create
receivestore
printsend
forward
delete
Click to view Web Linkthen click E-mail
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 Services
p. 2.30 Fig. 2-26
Step 1
Step 2
Step 3Step 4
Step 5
1 Start an e-mail program and point to the New Mail Message button2 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.
Other Internet Services
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
p. 2.31 Fig. 2-27
user name or user-ID
A unique combination of characters that identifies you
at domain name
Identifies the mail server
mail server
The server that contains the mailboxes
Other Internet Services
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
p. 2.33
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
Internet
Other Internet Services
What is a POP server? Post office protocol server
p. 2.32
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 other e-mail software
POP3 is the newest version
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
Other Internet Services
How does an e-mail message travel?
p. 2.32 Fig. 2-28
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.
Other Internet Services
p. 2.33 Fig. 2-29
file download window
What is FTP? File Transfer Protocol
An Internet standard allows you to upload and download fines with other computers on the Internet
Other Internet Services
What are some FTP terms?
p. 2.33
FTP server
A computer that allows users to
upload and download files
using FTP
FTP site
A collection of files that reside on
an FTP server anonymous FTP
Anyone can transfer some, if not all, available
files
Usenet
The entire collection of Internet newsgroups
Other Internet Services
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
p. 2.33
News server
A computer that stores and distributes
newsgroup messages
Other Internet Services
What is a newsreader?
p. 2.33
article
A previously entered message
post
To add an article to a news group
thread
Also called threaded discussion
The original article and all subsequent related replies
A program that enables you to access a newsgroup
Other Internet Services
What is a message board? A type of discussion group that dos not require
a news reader
p. 2.34 Fig. 2-30
Also called a discussion board
Click to view Web Linkthen click Message Boards
Other Internet Services
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
p. 2.34 Fig. 2-31
Subscribe or unsubscribe to mailing list to add or remove your name from the mailing list
Some are known as LISTSERVs
Other Internet Services
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
p. 2.35 Fig. 2-32
Click to view Web Linkthen click Chat Rooms
A chat client is a program on your computer that allows you to chat
Technology Trailblazer
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
p. 2. Fig. 2-
Click to view Web Linkthen click Lavonne Luquis
message sent from Karen to Katy
Other Internet Services
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
p. 2.36 Fig. 2-33
Katy’s response to Karen
Karen’s message immediately displays on Katy’s computer screen because she is online
Click to view Web Linkthen click Instant Messaging
Netiquette
Golden Rule: Treat others as you would like them to treat you.
In e-mail groups and chat rooms:
• Use emoticons to express emotion
: ) Smile
: ( Frown
: l Indifference
:\ Undecided
:o Surprised
In e-mail groups and chat rooms:
• 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
• Read the FAQ (frequently asked questions)
• Use your user name for your personal use only
• Do not assume material is accurate or up to date
• Never read someone’s private e-mail
In e-mail groups and chat rooms:
• Keep messages brief
• 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
• Message that reveals a solution to a game or ending to a movie or program
In e-mail groups and chat rooms:
• Avoid sending or posting flames
• Abusive or insulting messages
• Do not participate in flame wars
• Exchanges of flames
In e-mail groups and chat rooms:
• Avoid sending spam
• Internet junk mail
• Unsolicited message sent to many recipients at once
Other Internet Services
What is netiquette?
Internet etiquette
Code of acceptable behaviors users should follow while on the Internet
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
Chapter 2 CompleteChapter 2 Complete
