ccna 1 v3.1 module 2 networking fundamentals

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CCNA 1 v3.1 Module 2 Networking Fundamentals

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Objectives

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Data Networks

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Network History

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Network History continued

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Networking Devices

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Network Topology

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Network Protocols

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Local-area Networks (LANs)

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Wide-area Networks (WANs)

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Metropolitan-Area Network (MANs)

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Storage-Area Networks (SANS)

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Virtual Private Networks (VPNs)

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Benefits of VPNs

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Intranet and Extranet VPN

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Importance of Bandwidth

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Bandwidth Pipe Analogy

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Bandwidth Highway Analogy

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Bandwidth Measurements

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Bandwidth Limitations

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Bandwidth Throughput

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Digital Transfer Calculation

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Digital versus Analog

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Using Layers to Analyze Problems

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Using Layers to Describe Data Communication

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OSI Model

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OSI Layers

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OSI Layers

•Provides connectivity and path selection between two host

•Provides Logical address

•No error correction, best effort delivery.

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OSI Layers

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OSI Layers

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OSI Layers

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OSI Layers

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OSI Layers

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Peer-to-Peer Communication

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TCP/IP Model

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Encapsulation

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Names for Data at Each Layer

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Summary