Networking Fundamentals - Cisco
SMB University: Selling Cisco SMB Foundation Solutions
Networking Fundamentals
? 2006 Cisco Systems, Inc. All rights reserved.
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Objectives
? Describe the function and operation of a hub, a switch and a
router
? Describe the function and operation of a firewall and a
gateway
? Describe the function and operation of Layer 2 switching,
Layer 3 switching, and routing
? Identify the layers of the OSI model
? Describe the functionality of LAN, MAN, and WAN networks
? Identify the possible media types for LAN and WAN
connections
? 2006 Cisco Systems, Inc. All rights reserved.
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What is a Network?
? A network refers to two or more connected computers that
can share resources such as data, a printer, an Internet
connection, applications, or a combination of these
resources.
? 2006 Cisco Systems, Inc. All rights reserved.
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Types of Networks
Local Area Network (LAN)
Metropolitan Area Network (MAN)
Wide Area Network (WAN)
? 2006 Cisco Systems, Inc. All rights reserved.
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WAN Technologies
Leased Line
Synchronous serial
Circuit-switched
TELEPHONE
COMPANY
Asynchronous serial. ISDN Layer 1
? 2006 Cisco Systems, Inc. All rights reserved.
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