Introduction to Computer Networks - Slides (R2)

Introduction to Computer Networks - Slides (R2) - CSCI 232...

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SCI 232 CSCI 232 Computer Networking: troduction to Computer Networks Introduction to Computer Networks George Blankenship Introduction to Computer Networks George Blankenship 1
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Lecture Outline • Environment – Business relationships – Technology relationships i l • Terminology • Topology – Logical relationships – Physical relationships • Architecture • Standards organizations Introduction to Computer Networks George Blankenship 2
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he Changing World of The Changing World of ommunication Communication •P a s t – Business separation between communications and data processing resent • Present – Data processing and data communications hardware is the same – Data, voice, and video communications are fundamentally the same – The distinction between intra-processor and inter- processor technology has blurred Introduction to Computer Networks George Blankenship 3
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Communication Objective • Movement of information from source to destination formation movement attributes Information movement attributes – Accuracy - received what was sent – Reliability - performs predictably – Intelligible - able to understand what was sent – Availability - usable by those that have need Introduction to Computer Networks George Blankenship 4
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Communication Model • Source ransmitter Transmitter – Physical (hardware encoding) – Logical (software encapsulation) • Transmission facility – Physical (hardware) – Logical (queue) • Receiver hysical (hardware decoding) Physical (hardware decoding) – Logical (software decapsulation) • Destination Introduction to Computer Networks George Blankenship 5
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Communication Terms • Interface ignal generation Signal generation • Exchange management/flow control • Error detection/recovery essage formatting • Message formatting • Transmission system utilization • Management Introduction to Computer Networks George Blankenship 6
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This note was uploaded on 09/03/2010 for the course CS 232 taught by Professor Susan during the Summer '09 term at GWU.

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Introduction to Computer Networks - Slides (R2) - CSCI 232...

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