6CSE3213_02_PacketSwitchingW2012

6CSE3213_02_PacketSwitchingW2012 - 26 1950s 1960s...

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26 1950s - 1960s: Terminal-Oriented Computer Networks 1960s – 1970s: Computer-to-Computer Networks: the ARPANET – first Wide Area Network (WAN) 1980s: Local Area Networks (LANs) 1980s : The Internet
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27 The Internet Internet = Internetwork two or more interconnected networks – network of networks The Internet: Past The Internet: Present LANs that emerged in 1970s were different in terms of their underlying technology and operation a protocol that would enable communication across multiple dissimilar networks was needed higher level of abstraction” protocol – IP Protocol Internet Protocol / Addressing were soon developed and enabled creation of a single global internetwork spread over 200 countries made up of 100,000s of interconnected networks, 100,000,000s of interconnected hosts, and 1,000,000,000s of users still grows exponentially …
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28 The Internet (cont.) G = gateway
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6CSE3213_02_PacketSwitchingW2012 - 26 1950s 1960s...

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