ESOFT Metro Campus - Diploma in Information Technology - (Module V) Expose yourself to Internet & E-mail (Template - Virtusa Corporate) Contents: What is the Internet? Benefits of the Internet History of the Internet Facts about Internet… What are the services on Internet? How Internet works? Binary Signals Data Communication Packets Routers Fault Tolerance TCP What is WWW? How to browse Internet? Web Browser Software Website/Page URL IP Address Domain Name System HTTP HTTP Get Requests HTML HTTP Post Requests Cookies HTTPS What is Email? Types of Email Accounts Email Address How to use Email? Obtaining an Internet Connection Types of Internet Connections Security Concerns on Internet Privacy on Internet

1. Diploma in Information Technology
Module V: Expose yourself to
Internet & E-mail
Rasan Samarasinghe
ESOFT Computer Studies (pvt) Ltd.
No 68/1, Main Street, Pallegama, Embilipitiya.

2. Contents
1. What is the Internet?
2. Benefits of the Internet
3. History of the Internet
4. Facts about Internet…
5. What are the services on Internet?
6. How Internet works?
7. Binary Signals
8. Data Communication
9. Packets
10. Routers
11. Fault Tolerance
12. TCP
13. What is WWW?
14. How to browse Internet?
15. Web Browser Software
16. Website/Page URL
17. IP Address
18. Domain Name System
19. HTTP
20. HTTP Get Requests
21. HTML
22. HTTP Post Requests
23. Cookies
24. HTTPS
25. What is Email?
26. Types of Email Accounts
27. Email Address
28. How to use Email?
29. Obtaining an Internet Connection
30. Types of Internet Connections
31. Security Concerns on Internet
32. Privacy on Internet

3. What is the Internet?

4. What is the Internet?
The Internet is a global network
connecting billions of devices. More than
100 countries are linked into exchanges
of data, news and opinions!

5. What is the Internet?
A computer connected to a internet is
know as a Host

6. What is the Internet?
Once you are connected to the internet,
you can communicate and share
Information with each other.

7. Benefits of the Internet?

8. Benefits of the Internet
Find Information
Share Information
News
Online TV / Sports
Communication (Email / Chat / Video Calls)
E-Commerce
And many more!

9. Is anybody in charge of the
Internet?

10. History of the Internet
Year 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.

11. Facts about Internet…
Internet users in 2012 as a percentage of a country's population

12. Facts about Internet…
Mobile broadband Internet subscriptions in 2012

13. Facts about Internet…
Website content languages

14. Facts about Internet…
Internet censorship by country

15. Facts about Internet…

16. What are the services on Internet?
• World Wide Web (www)
• Email
• FTP
• Telnet
• News Groups

17. How information transferred from one
computer to another?

18. Binary Signals

19. Atoms of the Information

20. Data Communication

21. How is data delivered to you reliably?

22. Requesting a song from the server?

23. Data travels in less direct fashion

24. Road Conditions

25. How you move a ship from a
factory to it’s launch?

26. Packets

27. Packets

28. Packets

29. Routers

30. Fault Tolerance

31. Fault Tolerance

32. TCP

33. TCP

34. 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

35. How to browse web?
Practical session…
Browsing internet using a web browser
software
Searching information

36. Web Browser Software
Microsoft Internet Explorer
Mozilla Firefox
Google Chrome
Opera
Netscape Navigator

37. Website/Page URL
http://www.esoft.lk
Domain Name
Domain Extension
Sub Domain
Protocol (Hypertext Transfer Protocol)

38. IP Address ( Internet Protocol )

39. Domain Name System

40. HTTP - HyperText Transfer Protocol

41. HTTP GET Requests

42. HTML - HyperText Markup Language

43. HTTP POST Requests

44. Cookies

45. HTTPS

46. HTTPS

47. What is Email?
Electronic Mail is an another service on the
internet
Electronic Mail is a messaging service

48. Types of Email Accounts
There are two different Email Account types
Web Based Email Accounts
Direct Email Accounts from an ISP

49. Email Address
info@esoft.lk
Email ID
Domain Name
Domain Extension

50. How to Use E-Mail?
Practical session…
How to get an E-Mail Account
How to use an E-Mail Account

51. Email Protocols
IMAP (Internet Message Access Protocol)
POP3 (Post Office Protocol 3)
SMTP (Simple Mail Transfer Protocol)

52. Obtaining an Internet Connection
There are several internet service providers in
Sri Lanka

53. Types of Internet Connections
Dial-up Connections
ISDN (Integrated Services Digital Network)
Broadband (DSL / ADSL / Mobile)
Leased Lines
Wi-Fi Connections

54. Security Concerns on Internet
Virus Attacks!

55. Security Concerns on Internet
Hacker Attacks!

56. Security Concerns on Internet
Spyware!

57. Security Concerns on Internet
Spam!

58. Privacy on Internet
Know what you share with whom
Know the genuine websites
Use strong passwords

59. The End
http://twitter.com/rasansmn