rowe11 - Chapter 11 Network Fundamentals Agenda Definition...

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Chapter 11 Network Fundamentals
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Agenda Definition Classification Information Routing Connection Telecommunication software Architecture
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Definition Network Backbone network
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Classification Topology Ownership Geography Transmission
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Network Topology Star Hierarchical Mesh Bus Ring Hybrid
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Star Network Circuits Point-to-point, multipoint, or combination Pros Expand Implement No limit to no. and length of arms Cons Single point of failure Overload of mater during peak traffic
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Hierarchical Network Tree structure with a root pro No single point of failure Divisional communications and processing
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Mesh Network Web structure Usage Public telephone system Pro Alternative communication route Virtually fail-safe Con Line cost
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Bus Network Usage High speed, short distance between nodes Local area network Pros Independent between nodes High reliability Cons Limited number of attached device Hard to locate the problems
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Ring Network Usage Nodes are relatively close together Pros Less attenuation Error control Network management Cons Failing of a node Two opposite direction channels
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Hybrid Networks Usage Connecting different networks Pro Communication between different networks Con Conversion device and costs
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Network Ownership Private networks Public networks Valued added networks
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Private networks Full control Special needs Expense
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Public networks Controlled by carriers Regulated by government Inexpensive
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Valued Added Networks Public network Functions Code translation Speed conversion Store message and delivery Examples Telex SWIFT SITA (airline) IVAN (insurance)
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Networks by Geography Wide area network (WAN) Metropolitan area network (MAN) Local area network (LAN)
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Wide Area Networks Public Switched Telephone Network (PSTN) Provided by carriers Inexpensive High quality service for infrequent users
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Metropolitan Area Networks IEEE 802.6 Distance up to 30 miles High bandwidth for data, voice, and video T1, T3, or fiber optic cable Private own or dark fiber supplied by MAN provider
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rowe11 - Chapter 11 Network Fundamentals Agenda Definition...

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