Computer Networking and Management Lesson 1



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Computer Networks and Internet - Overview
Things to Remember: Communication infrastructure enables distributed applications l
Web l
email l
games l
e-commerce l
database l
voting l
file (MP) sharing Communication services provided to apps:
l connectionless l
connection-oriented
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What is a Protocol
Computer Networking and Management
Page 5 of 44

Now that we have got a bit of a feel for what the Internet islet us consider another important buzzword in computer networking – protocol. What is a protocol What does a protocol do How would you recognize a protocol if you met one
human protocols: whats the time ” I have a question ” introductions
specific msgs sent
… specific actions taken when msgs received, or other events
network protocols: machines rather than humans all communication activity in Internet governed by protocols
protocols define format, order of msgs sent and received among network entities, and
actions taken on msg transmission, receipt
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