Fully connected network

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A fully connected network is a mesh network in which each of the nodes is connected to each other. A fully connected network doesn't need to use switching nor broadcasting. However, its major disadvantage is that number of connections grows exponentially with number of nodes, per formula

c= \frac{n^2-n}{2}.\,

and so it is extremely impractical for large networks. A two-node network, one of the most common network types, is technically a fully connected network

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