Transcript CCNA 1 Chapter 2 Networking Fundamentals

CCNA 1 v3.0 Module 2
Networking Fundamentals
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Objectives
Data Networks
Network History
Network History continued
Networking Devices
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
OSI Layers
•Provides connectivity and path selection between two host
•Provides Logical address
•No error correction, best effort delivery.
OSI Layers
OSI Layers
OSI Layers
OSI Layers
OSI Layers
Peer-to-Peer Communication
TCP/IP Model
Encapsulation
Names for Data at Each Layer
Summary