INTERNET

Introduction
✓ 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. 2

Advantages of Internet
✓ Communication

✓ Research

✓ Education

✓ Financial transactions

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 Advantages
Communication:
✓ Communication is a process transmitting
and receiving symbol, data, image, text,
document, graphic etc by using various
computer devices.

✓ Internet now being a main communication

tool, using video conferencing, internet
phone, Messenger, email etc.
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Research:
Advantages
Research is one such thing which has got lots of benefit from this
evolution of internet.

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 Advantages
Education:
There are a number of books, reference books, online help centres,
expert’s views and other study oriented material available on the
internet.

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 Advantages
Financial Transactions:
✓ Financial transaction is the term which is used when there is
exchange of money.

✓ With the ability to do the financial

transaction easily over the internet you
can purchase or sell items so easily.

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Disadvantages of Internet
✓ Theft of Personal Information

✓ Spamming

✓ Malware Threats

✓ Social Isolation, Obesity and

Depression

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 Disadvantages
Theft of Personal Information:-

✓ The use of Internet for banking, social

networking, or other services, often
makes our personal information
vulnerable to theft.

✓ Hackers can access our sensitive Protect your identity

information through unsecured
connections. 9
 Disadvantages
Spamming:-
✓ Spamming refers to sending unwanted e-mails.

✓ Spammers usually use bots that bombard the receiver with an

endless line of advertisements.

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 Disadvantages
Malware Threats :-
✓ One of the most annoying problems with the Internet is the ease
with which any malware can infect our computers.

✓ Virus programs are inconspicuous and may get activated simply

by clicking a seemingly harmless link.

✓ Computers connected to the Internet are

extremely prone to virus attacks that may
end up crashing the system completely. 11
 Disadvantages
Social Isolation, Obesity and Depression:-
✓ The biggest problem with having the Internet is an addiction for
everything that pertains to the web and that includes excessive
surfing, online gambling, social networking, and gaming
addiction.

✓ Since all problems are so deeply linked

with one another and with the Internet,
it isn't uncommon for people to be afflicted
with multiple issues. 12
 Internet Services
✓ WWW ✓ URL
✓ Webpage / Homepage ✓ HTML
✓ Web browser ✓ ISP
✓ Search Engine ✓ E-mail
✓ Internet protocol ✓ Video conferencing
✓ HTTP ✓ FTP

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 WWW
✓ WWW is the short form for the World Wide Web. It is also
commonly known as ‘The Web’.

✓ The WW is hypertext based information retrieval tool.

✓ One can easily surf the Web by jumping from one document to
another using the links in those documents.

✓ These documents can be in many formats, such as text,

graphics, animation, sound and latest is video. 14
✓ All the information on Internet are presented to the user as a
document or more popularly known as Web Page.

✓ All these Web Pages are link to each other or even to section
within a Web Page. And these links are known as Hyper Links.

✓ Creator: Timm Berners-Lee, 1989.

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Difference between the Web and Internet
✓ 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.
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 Web Page
✓ A web page is a document or resource of information that is
suitable for the World Wide Web and can be accessed through a
web browser and displayed on a monitor or mobile device.
✓ This information is usually in HTML format.

✓ It can contain text, graphics, audio, video and has built- in

connection or links to other web documents.

✓ A web page has a unique address called a Uniform Resource

Locator (URL). 17
 Web Browser
✓ A software application for retrieving, presenting, and traversing
information resources on the World Wide Web.

✓ It allows to locate, view, and navigate the web.

✓ Internet Explorer, Mozilla Firefox, Chrome, Opera are the

examples of web browser.

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Different types of Web Browser
✓ Google Chrome
✓ Mozilla Firefox
✓ Internet explorer
✓ Safari
✓ Opera Mini
✓ Netscape Navigator

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 Search Engines
✓ Search engine is a program that allows Internet users to search
for content via the World Wide Web (WWW).

✓ A user enters keywords or key phrases into a search engine

and receives a list of Web content
results in the form of websites,
images, videos or other online data.

✓ Examples – Google, Yahoo,

Ask.com, Bing etc 20
 Firewall
✓ A firewall is a set of related computer programs that protects
the resources of a private network against unauthorised users.
✓ Unauthorised users are often known as hackers.

✓ Examples of firewall programs:-

➢ Tinywall
➢ PeerBlock
➢ Anti NetCut3.
➢ Little Snitch [Mac]
➢ Private Eye [Mac] 21
 Plagiarism
Plagiarism is presenting someone else’s work or ideas as your
own, with or without their consent, by incorporating it into your
work without full acknowledgement.

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 Protocol
✓ A set of guidelines or rules.

✓ A protocol is a standard set of rules that allow electronic devices

to communicate with each other.

✓ Different types of protocols are:-

➢ Hypertext Transfer Protocol (HTTP)
➢ Internet Protocol (IP)
➢ File transfer protocol (FTP)
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 HTTP
✓ HTTP an acronym for Hypertext Transfer Protocol.

✓ HTTP is the set of rules for transferring files, such as text,

graphic images, sound, video, and other multimedia files, on
the World Wide Web.

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 FTP
✓ FTP is an acronym for File Transfer Protocol.

✓ File Transfer Protocol (FTP) is used to upload and download

files from your computer to a web server and vice versa.

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 ISP
✓ ISP is an acronym that stands for Internet Service Provider.

✓ An Internet Service Provider is a company that provides

Internet access to organizations and home users.

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 URL
✓ URL - Uniform Resource Locator.

✓ URL is a unique identifier used to locate a resource on

the internet.

✓ It is also referred to as a web address.

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 THANK YOU!

ANY QUESTIONS?
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