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

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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 (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