fournode
Fournode is a term used in discussions of computer network topology to describe a node that directly connects to four other nodes. It is often presented as a modular building block for more complex patterns, such as grid- or quad-tree–based networks, or as a simple reference point in routing and fault-tolerance studies.
Etymology and usage: The word combines four and node, and is sometimes written as four-node. It is
Characteristics: A fourn ode typically has four incident links to distinct neighbors, arranged in a cross or
Applications: Fournodes are useful in teaching concepts related to routing, consensus, and resilience in constrained networks.
Variants and limitations: While the fourn ode concept is convenient for simplifying analysis, it is not a
See also: star topology, mesh topology, grid network, quad-tree, degree-limited networks.