Part Three the Internet[1]

8/9/2019 Part Three the Internet[1]

1/56

02/01/15 Mugerwa Richard

Part Three

The Internet


2/56


Objectives

Understand what the Internet is and how it works.

Understand what the Word Wide Web (WWW) is andhow it works.

To understand the use of web browser.

To understand how to use the e-mail.

To differentiate between the Internet and WWW.

To differentiate between the Internet and Intranet.

To differentiate between the Intranet and extranet. To differentiate between the Website and www.

To differentiate between the Website and Intraweb.

To understand what a search engine is and how itworks.


3/56


Internet or the Net

What is the

Internet?


4/56


What is the Internet?

The Internetis a Networkof computernetworks linked together worldwide.

It is a public (global) network ofcomputers based on TCP/IP(Transmission Control rotocol!Internetprotocol) " Set of rules or standards

used by networked co!uters tocounicate to each other"

What is a network#


5/56


What is the Internet? cont#

Internet is transport for information

Computer networks are linked b$ either copperwire%

&iber optic cables Wireless connection through satellite

The Internet is a $lobal network of networks.

eople and organi'ations connect onto theInternet so the$ can access its massie store of

shared information.


6/56


What is the Internet? cont#

The Internet is an fundamentall$

!artici!ativemedium of working with

information.

n$bod$ can publish information or

create new serices.

The Internet is a cooperatie endeaour-- no organi'ation is in chargeof the

*et.


7/56


+ow ,o I Connect to the Internet#

Computer

*etwork inks (connection) "

hone ine% Cables% digital

subscriber line (,)% Wireless% ... /odem

*etwork oftware - TC!I

pplication oftware "

0perating $stem%Web 1rowser%

Internet erice roider (I)


8/56


Services on the Internet

Soe of the services on the Internet include% World Wide Web

ccessing arious websites

2-mail (2lectronic /ail)

2xchange of electronic messages

Internet 3ela$ Chat (I3C)

Instant communicating or chatting%

Chat rooms

*ewsgroups

2-commerce and e-business

Internet phone calls (&oice over Internet Protocol'&oIP

4


9/56


Internet cont#

Internet erice roider (I)

compan$ that proides access to the Internetto indiiduals or companies. 2.g. /T*% UT

Web +osting roider (W+)

re companies that allows $ou a place to keep$our web site on their serer so people on theInternet can iew it. 2.g. 5olis.net%+ostingpot.com


10/56


Internet cont#

Internet a worldwide network of computers, making information

available to everyone


11/56


Internet cont#

0n these computers% people hae publishedinformation6 pages with text and pictures.

These pages are called 7webpages8 which arelinked to form 7websites8. There are millions ofwebsites on internet% with an enormous amountsof information which $ou can iew and use for

$our reading% research or fun9

These websites are accessed through a webbrowser


12/56


Web (rowser

Web browseris an application software that

enables users to displa$ and interact with

web pages or websites.

It an application software that enables usersto access the Internet through different

websites.

The user can access6

2ither on WWW

0r the Intraweb


13/56


Web (rowser cont"""

oftware for

accessing the

web

2xamples ofweb browser

software


14/56


)eatures of a Web (rowser

:on;ueror


15/56


Web (rowser cont"""

/o'illa&irefox


16/56


*ddress window or +ocation window

The unifor resource locator(U3) is the

uni;ue identifier of a web page.

The location windowdispla$s the U3 of the

current page.


17/56


Web (rowser cont#

,-ercise

0pen web browser

T$pe in address bar =www.google.com>

=www.bbc.co.uk>

=http6!!home.umu.ac.ug!>

=http6!!www.fiuc.org!umu>


18/56


What is World Wide Web (www)

World Wide Web (WWW% =The Web>) is the

interconnection of the websites (documents)and Internet serices (2mail% I3C% etc)

Webpage - document on WWW Website

collection of linked Webpages under commonadministration% i.e. 0ne organisation like

Uganda /art$rs Uniersit$

The starting point for a web site sometimes iscalled a hoe !a$e.


19/56


World Wide Web cont"

Web pages are stored in computers

called web servers"

n$ organi'ation can setup a web

serer.


20/56



Intranet

http6!!home.umu.ac.ug

Website

http6!!www.fiuc.org!umu

http6!!www.umu.ac.ug


21/56


.. Website


22/56



Website Collection of web-pages under common

administration

2ach website has a uni;ue address .0+ 1 .nifor 0esource +ocator" is the

address of a web site.

The global address of a webpage (documents)

and other resources on the World Wide Web. U3s start wit http6!! which stands for h$pertext

transfer protocol

ccessed through web browsers


23/56


Internet and www

,ifferences

Internet is interconnection of computernetworks

www is the interconnection of websites imilarities

The$ are accessed through web browsers

The$ use the same web technolog$

3esearch about the uses of www.


24/56


Intranet

Wh$ does this website looks different from

the one I see when I am at the uniersit$#

What is an Intranet#

n Intranet is priate computer network ocal rea *etwork (*)

Intranets offer all the benefits of the Internet

but offer them priatel$

&or a particular organisation for example

Uganda /art$rs Uniersit$


25/56


.. Intraweb


26/56


Intranet cont#

1enefits of the Intranet

2xchange of e-mails with in the organi'ation

haring of information

haring resources

What do you think are the disadvanta$es of

the Intranet?


27/56


,2ail

What is an e-mail#

2lectronic mail

Communication between two or more parties

ender and recipient need an email address ?username@domainA

rocedure


28/56


,2ail cont#

2-mail language

Inbo- - 1ox for incoming messages

Sentor Outbo-" outgoing messages

Trash" 1ox for deleted messages Co!oseor New" Write a new message

Send" end message

+o$in orSin$ in +o$outor Si$n out


29/56


,ail Clients 2 program that lets the user receie andsend electronic messages. ost eail client software allows you to% ,ispla$ a list of receied essa$es. 2ach essa$e

header shows $ou who sent the mail% the subBect line% thetime and date it was sent% and at times% the si'e of themessage.

elect the message header and read the message. Create new messages.

3epl$ to% forward% and delete messages. ttach files (called attachments) to messages $ou send. ,ownload the attachment. ae the attachments $ou receie.

*ccessin$ the ,2ail


30/56


*ccessin$ the ,2ail cont#

+ow do I access m$ e-mail (U/U)#


31/56


*ccessin$ the ,2ail cont"


32/56


*ccessin$ the ,2ail cont#

+ow do I access m$ e-mail (U/U)#

1 - number of the message; 2 - date and time message arrived;

3 - name of the sender; - sub!ect of the email;

" - si#e of the message


33/56



+ow do I access m$ e-mail (


34/56


3eading and sending a 2-mail

cont.

+ow do I read an e-mail message#


35/56



.se of 3ifferent (uttons The Sto!button stops page loading.

The 0eloadbutton fetches a fresh cop$ of

the page.

If the page is alread$ loaded% the Sto!button

free'es the animations.

4o backone page

4o forwardone page


36/56



The!ro$ress bar

illustrates page load

progress.

Do back

one page

Do back

one page


37/56


3eading and sending a 2-mail cont.


38/56


ttaching a file to 2-mail

+ow do I attach a file to a message#

Use Newbutton as $ou are sending message

ttachment " Click on (rowse

elect the file from its +ocation Click O!enbutton

Click *ddbutton


39/56


ending and receiing message

ending pecif$ recipient

pecif$ subBect

Compose message end

3eceiing email

Do to inbox elect message


40/56


ending and receiing message

cont.

Imagine receiing such a message#

The sender of this message is called


41/56


2xercise

end an email to a classmate and CC to

another classmate

Use this address6 ba56768uu"ac"u$

3eceie that email


42/56


Searchin$ the Internet

The underl$ing model is client2server.

Web serveris a program running on a

computer that is set up to sere documents to

other client computers that send re;uests fordocuments.

Web clientis a program that lets the user

re;uest documents from a serer. The serer

onl$ operates when a document is re;uested.


43/56


Searchin$ the Internet cont#


44/56


Web client is usuall$ a Web browser.

Its operation is as follows6

Client connects to a computer specified b$ a network

addressE

This address is called a.0+ 9.nifor 0esource

+ocator':

3e;uest is sent to the computerFs Web serer (http

serer)E

erer responds b$ sending the text and other mediaE

The document is in +T/ 9;y!erte-t arku!

+an$ua$e'"



45/56



UsingSearch ,n$ines

search engineis a database of resources

that can be searched b$ keywords.

lta Gista ?www.altaista.comA

*orthern ight ?www.northernlight.comA

Doogle ?www.google.comA

T$pe in a ke$word e.g. Co!uter +iteracy


46/56




47/56


The next screen shows the results6 Dooglefound H.JK.KKK websites and shows $ou thefirst ten on this page.

2ach result is a 7link8 to a website containingthe ke$ word 7Co!uter +iteracy8. /oe$our cursor on a link and click to isit thatwebsite.

Use the mouse right button to open a newtab for each link$ou want to iew or 71ack8-button to go back to Doogle8s results andclick on another link.



48/56




49/56


;y!erlinks 1 What is hy!erlinks

;y!erlinkst$picall$ appear as highlighted

(underlined and coloured).

When $ou moe the ouse cursor over ahy!erlink< the arrow should change to a

=small hand pointing at the link when $ouFe

found a h$perlink. Click once to follow a h$perlink.

h$perlink can be a graphic% a work or set of

words.



50/56


croll down using a ouseor scroll baron

the ri$ht sideof the search windowthe

page to see more links4

Doogle shows a little text from each website.Doogle also shows the address of the

website

t the bottom of each page% $ou can click tosee the next ten results.



51/56


elect the text or information $ou hae searched.

Cop$ the information.

aste the text in the word processor $ou are using.

2dit% format $our test. ae $our text.

3emember to acknowledge the source of the text

under reference. ,-a!le%/c:a$ ,. 3.% $year%&Computer Literacy - An Important Skill"http6!!careerplanning.about.com!od!importantskills!a!compLliterac$.htm MGiewedNJrd eptember% NKOKP



52/56



53/56


(ookarks

bookarkmarks $our place on the Web.

ress the 'ookmarkbutton for the bookmarks

menu.

elect dd 1ookmark to create a bookmarkfor the current page.

1ookmarks sta$ on the computer where $ou

make them. 1ookmarks are called favoritesor Internet

shortcutsin Internet 2xplorer


54/56


0eview

What is Internet#

What is WWW#

What is a website#

What is a webpage#

What do $ou understand b$ an email#

What is an intranet% extranet% intraweb#

What is a web browser# What is a search engine#

+ow do $ou search the *et#


55/56


The Web denture 1egins/ake sure $ou keep practice the new skills.


56/56

Class *ssi$nent

Create a &ile T$pe one page of an$ useful information

Utilise all the basic skills we hae so far learnt on

how to work with a word2!rocessand the=,>(O*03 )it will earn you an additional mark*

ae $our file using a eanin$ful filenae

ttach it to a message% gie a eanin$ful

subject for your essa$e

end it to m$ email address% and

end a cop$ to $ourself

Documents

Part Three the Internet[1]