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1© 2004, Cisco Systems, Inc. All rights reserved.
CCNA 1 v3.1 Module 2
Networking Fundamentals
222© 2004, Cisco Systems, Inc. All rights reserved.
Data Networks
333© 2004, Cisco Systems, Inc. All rights reserved.
Network History
444© 2004, Cisco Systems, Inc. All rights reserved.
Network History continued
555© 2004, Cisco Systems, Inc. All rights reserved.
Networking Devices
666© 2004, Cisco Systems, Inc. All rights reserved.
Network Topology
777© 2004, Cisco Systems, Inc. All rights reserved.
Network Protocols
888© 2004, Cisco Systems, Inc. All rights reserved.
Local-area Networks (LANs)
999© 2004, Cisco Systems, Inc. All rights reserved.
Wide-area Networks (WANs)
101010© 2004, Cisco Systems, Inc. All rights reserved.
Metropolitan-Area Network (MANs)
111111© 2004, Cisco Systems, Inc. All rights reserved.
Storage-Area Networks (SANS)
121212© 2004, Cisco Systems, Inc. All rights reserved.
Virtual Private Networks (VPNs)
131313© 2004, Cisco Systems, Inc. All rights reserved.
Benefits of VPNs
141414© 2004, Cisco Systems, Inc. All rights reserved.
Intranet and Extranet VPN
151515© 2004, Cisco Systems, Inc. All rights reserved.
Importance of Bandwidth
161616© 2004, Cisco Systems, Inc. All rights reserved.
Bandwidth Pipe Analogy
171717© 2004, Cisco Systems, Inc. All rights reserved.
Bandwidth Highway Analogy
181818© 2004, Cisco Systems, Inc. All rights reserved.
Bandwidth Measurements
191919© 2004, Cisco Systems, Inc. All rights reserved.
Bandwidth Limitations (Know this stuff)
202020© 2004, Cisco Systems, Inc. All rights reserved.
Bandwidth Throughput
212121© 2004, Cisco Systems, Inc. All rights reserved.
Digital Transfer Calculation
222222© 2004, Cisco Systems, Inc. All rights reserved.
Digital versus Analog
232323© 2004, Cisco Systems, Inc. All rights reserved.
Using Layers to Analyze Problems
242424© 2004, Cisco Systems, Inc. All rights reserved.
Using Layers to Describe Data Communication
252525© 2004, Cisco Systems, Inc. All rights reserved.
OSI Model (Important to know)
Programmers
Do
Not
Throw
Sausage
Pizza
Away
262626© 2004, Cisco Systems, Inc. All rights reserved.
OSI Layers
272727© 2004, Cisco Systems, Inc. All rights reserved.
OSI Layers
•Provides connectivity and path selection between two host
•Provides Logical address
•No error correction, best effort delivery.
282828© 2004, Cisco Systems, Inc. All rights reserved.
OSI Layers
292929© 2004, Cisco Systems, Inc. All rights reserved.
OSI Layers
303030© 2004, Cisco Systems, Inc. All rights reserved.
OSI Layers
313131© 2004, Cisco Systems, Inc. All rights reserved.
OSI Layers
323232© 2004, Cisco Systems, Inc. All rights reserved.
OSI Layers
333333© 2004, Cisco Systems, Inc. All rights reserved.
Peer-to-Peer Communication
343434© 2004, Cisco Systems, Inc. All rights reserved.
TCP/IP Model
353535© 2004, Cisco Systems, Inc. All rights reserved.
Encapsulation
Data
Segments
Packet
Frame
Bits
Data
Data
363636© 2004, Cisco Systems, Inc. All rights reserved.
Names for Data at Each Layer
373737© 2004, Cisco Systems, Inc. All rights reserved.
Summary

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