1. Diploma in Information Technology
Module V: Expose yourself to
Internet & E-mail
By: Rasan Samarasinghe
Esoft Computer Studies (pvt) Ltd.
No 68/1, First Floor, Main Street, Pallegama, Embilipitiya.
2. Content
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What is Internet?
History of the Internet
Facts about Internet…
What are the services on Internet?
What is WWW?
How to browse Internet?
What is Email?
How to use Email?
Getting an Internet Connection
Security Concerns on Internet
Privacy on Internet
3. 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!
5. What is Internet?
Once you are connected to the internet,
you can communicate and share
Information with each other.
6. History of the Internet
Year
Milestone
1958
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.
12. What are the services on Internet?
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World Wide Web (www)
Email
FTP
Telnet
News Groups
13. What is WWW?
www is a service on the internet
www allowing users to view information on a
remote computer called web server
www can be know as a collection of web
pages
14. How to browse Internet?
Learning…
Browsing internet using a web browser
software
Searching information
15. What is Email?
Electronic Mail is an another service on the
internet
Electronic Mail is a messaging service
16. How to Use E-Mail?
Learning…
How to get an E-Mail Account
How to use an E-Mail Account
17. Getting an Internet Connection
There are several internet service providers in
Sri Lanka