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7e Chapter 12 - MSIS 2103 Chapter 12 1 Chapter 12 Behind...

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MSIS 2103 Chapter 12 1
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Chapter 12 Behind the Scenes: Networking and Security in the Business World 2
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Chapter Topics Advantages of business networks Client/server vs. peer-to-peer networks Classifications of client/server networks Client/server network components Types of servers Network topologies 3
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Chapter Topics (cont.) Types of transmission media Network software Network adapters Moving data in a client/server network Securing networks 4
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Networking Advantages Networks Increase productivity – share and communicate Enable the sharing of hardware resources Gain efficiency/reduce costs of multiple sets of hardware Facilitate knowledge sharing – centralized databases Enable the sharing of software – update once 5
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Network Disadvantages Businesses need network administrators May not be a disadvantage May give you a job! Some expense associated with networking hardware and software for businesses Network benefits and cost savings usually outweigh the expense disadvantage 6
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Client/Server Networks Data flows efficiently (more than in peer-to- peer) Servers respond to requests from clients Servers perform specific tasks 7
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Classifications of Client/Server Networks LAN Local area network Computers linked over a small geographic area 8
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Classifications of Client/Server Networks WAN Wide area network Computers linked over large geographic areas MAN Metropolitan area network Computers 9
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Classifications of Client/Server Networks PAN Personal area network Wireless devices connected in close proximity to each other Intranet Private corporate network Protected from the Internet by a firewall 10
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Classifications of Client/Server Networks Extranets Only certain corporations or individuals can access Suppliers and customers, for example Useful for enabling electronic data interchange Sharing among trade partners or industry groups 11
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Classifications of Client/Server Networks VPN A virtual private network (VPN) uses the public Internet communications infrastructure to build a secure, private network between various locations Like a private data tunnel VPNs use special security technologies and protocols that enhance security, enabling data 12
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Constructing Client/Server Networks Servers Network topologies Transmission media Network operating system software Network adapters 13
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