Networking Fundamentals - Cisco
[Pages:38]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
? 2006 Cisco Systems, Inc. All rights reserved.
Circuit-switched
TELEPHONE COMPANY
Asynchronous serial. ISDN Layer 1
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WAN Technologies (Cont.)
Frame-Relay
Synchronous serial
SERVICE PROVIDER
Broadband Access
? 2006 Cisco Systems, Inc. All rights reserved.
SERVICE PROVIDER
Cable, DSL, Wireless WAN
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Network Topologies: Bus Topology
Terminator
SEGMENT
Terminator
? 2006 Cisco Systems, Inc. All rights reserved.
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Network Topologies: Star Topology
Hub
? 2006 Cisco Systems, Inc. All rights reserved.
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