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Published byKatherine Cooper Modified over 9 years ago
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NETWORKING
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OBJECTIVES Identify network topologies Identify hardware components of a network
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WHAT IS A NETWORK? Productive way to utilize a group of computers Two or more computers linked together –Share resources –Security –Communication
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NETWORK COMPONENTS Cables Adapter Cards Servers Workstations Printers Modems
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NETWORK TOPOLOGIES MESH BUS RING STAR
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NETWORK TOPOLOGIES Mesh Network A pure mesh network has point-to-point links (a direct connection between two devices) between every node in the network.
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NETWORK TOPOLOGIES Bus Network A bus topology is a linear transmission medium terminated at both ends. All nodes attach directly to this medium via relatively short links.
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NETWORK TOPOLOGIES Ring Network The ring topology consists of a closed loop of directly linked devices between repeaters.
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NETWORK TOPOLOGIES Star Network HUB In a star network, each device connects to a central point called a hub or concentrator. Information sent from a device always goes to the hub first and then is routed appropriately.
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NETWORK TOPOLOGIES Hybrid Network Hybrids use multiple topologies Wide Area Networks (WAN) often use direct links to connect remote rings or stars
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NETWORK TOPOLOGIES Hybrid Network
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LAN D LAN C LAN B File Server NETWORK TOPOLOGIES Mesh Network
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Application Presentation Session Data Link Physical Network Transport 7 6 5 4 3 2 1 NETWORK STANDARDS MODEL Open Systems Interconnection - OSI by ISO International Standards Organization To promote Multi-Vendor Inter-operability
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OSI Model – Memorizing Tip All People Seem To Need Data Processing
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