DITEC - Expose yourself to Internet & E-mail (updated)

Diploma in Information Technology

Module V: Expose yourself to Internet & E-mail

Rasan SamarasingheESOFT Computer Studies (pvt) Ltd.No 68/1, Main Street, Pallegama, Embilipitiya.

Content

1. What is Internet?2. Benefits of the Internet3. History of the Internet4. Facts about Internet…5. What are the services on Internet?6. What is WWW?7. How to browse Internet?8. Web Browser Software9. Website/Page URL 10. What is Email?11. Types of Email Accounts12. Email Address13. How to use Email?14. Obtaining an Internet Connection15. Types of Internet Connections16. Security Concerns on Internet17. Privacy on Internet

What is Internet?

The Internet is a global network connecting millions of computers. More

than 100 countries are linked into exchanges of data, news and opinions!

What is Internet?

A computer connected to a internet is know as a Host

What is Internet?

Once you are connected to the internet, you can communicate and share

Information with each other.

Benefits of the Internet

Find InformationShare InformationNewsOnline TV / SportsCommunication (Email / Chat / Video Calls)E-Commerce

History of the InternetYear Milestone

1966 Advanced Research Projects Agency (ARPA) was founded.

1969 ARPANET was born It connected four universities.

1972 First ARPANET international connections to England and Norway.First basic e-mail programs written by Ray Tomlinson for ARPANET

1983 The TCP/IP protocol was introduced.

1984 domain name server (DNS) created. .edu, .gov, .com, .mil, .org, .net, and .int created.

1986 5000 hosts on ARPANET/Internet.

1989 100,000 hosts on Internet.

1990 ARPANET ends. Tim Berners-Lee creates the World Wide Web.

2000 20,000,000 websites on the Internet.

2006 There are an estimated 92 million Web sites online .

2007 1.114 billion people use the Internet according to Internet World Stats.

Facts about Internet…

Internet users in 2012 as a percentage of a country's population


Mobile broadband Internet subscriptions in 2012


Website content languages


Internet censorship by country


What are the services on Internet?

• World Wide Web (www)• Email• FTP• Telnet• News Groups

What is WWW?

www is a service on the internetwww allowing users to view information on a

remote computer called web serverwww can be know as a collection of web

pages

How to browse Internet?

Practical session…

Browsing internet using a web browser software

Searching information

Web Browser Software

Microsoft Internet ExplorerMozilla FirefoxGoogle ChromeOperaNetscape Navigator

Website/Page URL

http://www.esoft.lk

Domain Name

Domain Extension

Sub Domain

Protocol (Hypertext Transfer Protocol)

How Web Browser Works - Cartoon Demonstration

What is Email?

Electronic Mail is an another service on the internet

Electronic Mail is a messaging service

Types of Email Accounts

There are two different Email Account types

Web Based Email AccountsDirect Email Accounts from an ISP

Email Address

[email protected]

Email ID

Domain Name

Domain Extension

How to Use E-Mail?

Practical session…How to get an E-Mail AccountHow to use an E-Mail Account

Email Protocols

IMAP (Internet Message Access Protocol)POP3 (Post Office Protocol 3)SMTP (Simple Mail Transfer Protocol)

Obtaining an Internet Connection

There are several internet service providers in Sri Lanka

Types of Internet Connections

Dial-up ConnectionsISDN (Integrated Services Digital Network)Broadband (DSL / ADSL / Mobile)Leased LinesWi-Fi Connections

Security Concerns on Internet

Virus Attacks!


Hacker Attacks!


Spyware!


Spam!

Privacy on Internet

Know what you share with whomKnow the genuine websitesUse strong passwords

The End

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