CCNA 1 v3.1 Module 2 Networking Fundamentals

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Objectives

Data Networks

Network History

Network History continued

Networking Devices

Network Topology Network topology defines the structure of the network. Physical topology, is the actual layout of the wire or media. Logical topology, is defines how the hosts access the media to send data.

Network Topology

Network Protocols

Local-area Networks (LANs)

Wide-area Networks (WANs)

Metropolitan-Area Network (MANs)

Storage-Area Networks (SANS)

Virtual Private Networks (VPNs)

Benefits of VPNs

Intranet and Extranet VPN

Importance of Bandwidth

Bandwidth Pipe Analogy

Bandwidth Highway Analogy

Bandwidth Measurements

Bandwidth Limitations

Bandwidth Throughput

Digital Transfer Calculation

Digital versus Analog

Using Layers to Analyze Problems

Using Layers to Describe Data Communication

OSI Model

OSI Layers

Provides connectivity and path selection between two host Provides Logical address No error correction, best effort delivery.

OSI Layers

Peer-to-Peer Communication

TCP/IP Model

Encapsulation

Names for Data at Each Layer

Summary