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Technology
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| Number of pages / Number of words: |
3 / 781 |
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The light on represents a 1 the light turned off represents a 0.
b) Optical fiber attenuation is between 0.3 db/Km and 3.0 db/Km.
20a) A network topology is the physical arrangement of a networks computers switches routers and transmission lines.
b) Topology is found at the physical layer
c) Point to point: is an arrangement that consists of exactly two end points connected directly together using a transmission medium...
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It is often used in WANs
Star Topology: Simple star all the wires connect to a single central node (switch, workstation e.c.t.) The node controls all the functions of the network. Peripheral nodes can only communicate through sending and receiving information to and from the central node
Extended star topology: consist of multiple layers of nodes organized in a hierarchy
Mesh Topology: Devices are connected with many interconnections between nodes such as routers and switches...
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comunication layers
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