network diagram
TRANSCRIPT
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Network diagram
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NETWORK DEVICE
Network devices are components used to connect computers or other electronic devices together so that they can share files or resources like printers or fax machines.
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Basic network devices
• A Computer• A hub• A switch• A router• A bridge• A firewall• A server• Cables
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Why to go for a network diagram?
Network diagram: provides• Planning• Security• Flexibility
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Physical network topology
Logical network topology
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Topology
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A computer
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Hubs:
Connects multiple Ethernet segments together making them act as a single segment. Works on OSI layer 1.
100baseT hub
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Switches
A switch splits the network traffic and sends it to different destinations rather than to all systems on the network. Works on OSI layer 2.
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Switch ISDN switch
Switch image Stack of the switch
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ROUTERS:
A device that forwards data packets along networks. A router is connected to at least two networks, commonly two LANs or WANs .Routers use the logic network address such as IP address to make decisions.
Router Wireless Router
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FIREWALLA piece of hardware or software put on the network to prevent some communications forbidden by the network policy.
Firewall Router Firewall
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server
• A computer on a network or other network device that stores all necessary information and is dedicated to provide a particular service.
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Types of servers
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Common symbols
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Common symbolsCommunication link Wireless Access point
GatewayATM switch
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• ATM uses a connection-oriented model in which a virtual circuitmust be established between two endpoints before the actual data exchange begins
• Gateway- a computer or a network that allows or controls access to another computer or network
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Common symbols
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Common symbolsCoaxial line Fiber optic line tag
Twisted pair cable
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• Twisted pair cabling is a type of wiring in which two conductors are twisted together for the purposes of canceling out electromagnetic interference
• Coaxial cable is the kind of copper cable used by cable TV companies between the community antenna and user homes and businesses.
• Fiber-optic communication is a method of transmitting information from one place to another by sending pulses of light through an optical fiber
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Common symbolsRelative database Bridge
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Common symbols
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Common symbols
Radio tower
Internet cloud
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Softwares for network diagram
• Smart draw.• Edraw Network Diagram.• MS Visio.• Nevron diagram designer.• 10 strike network diagram.• Concept draw7.
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Automatic generation of the LAN network model
http://weblandesigner.elena.aut.ac.nz/
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THANK YOU