2 - Internet Architecture The Layers Putting it Together...

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Internet Architecture The Layers Putting it Together Take-Home Points Internet Architecture Building Blocks of the Internet Daniel Zappala Brigham Young University Computer Science Department Internet Architecture Daniel Zappala 1/23
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Internet Architecture The Layers Putting it Together Take-Home Points 1 Internet Architecture Protocols Layers 2 The Layers Application Layer Transport Layer Network Layer Link and Physical Layers 3 Putting it Together Overview Standardization 4 Take-Home Points Internet Architecture Daniel Zappala 2/23
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Internet Architecture The Layers Putting it Together Take-Home Points Question of the Day How do you build an Internet so that everyone in the world can communicate using any application they want? Internet Architecture Daniel Zappala 3/23
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Internet Architecture The Layers Putting it Together Take-Home Points Internet Architecture an architectural model that separates communication protocols into layers layering helps to build complex systems split large system into smaller pieces identify each layer’s functionality and interfaces can change a layer’s implementation as long as interfaces remain the same Internet Architecture Daniel Zappala 4/23
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Internet Architecture The Layers Putting it Together Take-Home Points Protocols a formal definition of how two or more entities communicate includes format of messages actions taken when a message is sent or received actions taken when an event occurs Internet Architecture Daniel Zappala 5/23
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Internet Architecture The Layers Putting it Together Take-Home Points Protocol Example HTTP Request message format sent in ASCII format request line : method, URL, version header lines : additional method parameters ends with a carriage return and line feed actions: what happens when a server gets a request? Internet Architecture Daniel Zappala 6/23
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Internet Architecture The Layers Putting it Together Take-Home Points Binary versus ASCII Protocols most network protocols exchange messages coded in binary conserve space for small packets or expensive bandwidth requires standardizing a byte-level format
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This note was uploaded on 10/18/2011 for the course CS 460 taught by Professor Staff during the Spring '05 term at BYU.

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2 - Internet Architecture The Layers Putting it Together...

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