2. Network
● When two or more computer are inter-
connected with each other for data and
resource sharing is known as network
● Types of network
○ LAN
○ WAN
○ MAN
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3. LAN
● Local Area Network
● It is covers a small geographical area, like
office, home, or small building or campus
● It is based on ETHERNET technology
● It has higher data transfer rate
● No need for leased telecommunication line
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5. WAN
● Wide Area Network
● It covers large geographical area like city,
state, country or continent
● Communication media – Telephone lines,
cables and air waves
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7. MAN
● Metropolitan Area Network
● It covers geographical area like city or
campus
● LAN are interconnected to form MAN
● Communication media – Telephone lines,
cables and air waves
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9. Introduction to Internet
● Network of networks
● It covers a very large geographical area
● ARPAnet in 1957
● 1982 – The internet is born using the TCP/IP
standard
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11. The World Wide Web (1)
● 1989 – WWW concept
by Tim Berners-Lee
● 1990 – first browser/editor program
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12. The World Wide Web
● Some facts
○ 1994 – Hotmail starts web based email
○ 1994 – World Wide Web Consortium (W3C) was
founded
○ 1995 – JAVA source code was released
○ 1996 – Mirabilis (Israel) starts ICQ
○ 1998 – Google is founded
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13. Internet Domain
● Each Computer has a unique address as
number, runs server software and offers
information to be considered to be a
physical domain
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