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A topology is "[t]he physical layout of how computers are linked together."[1]

A topology is

[t]he geometric arrangement of a computer system. Common topologies include a bus, star, and ring. The specific physical, i.e., real, or logical, i.e., virtual, arrangement of the elements of a network.[2]


Topology is

(a) the property that describes adjacency and connectivity of features — in other words, the numerical description of the relationships among geographic features, as encoded by adjacency, linkage, inclusion, or proximity; (b) a branch of mathematics that studies patterns of geometric figures involving position and relative position without regard to size.[3]


  1. ISACA, Cybersecurity Fundamentals Glossary 31 (full-text).
  2. SANS Glossary of Security Terms
  3. Georeferencing: The Geographic Associations of Information, Glossary, at 234.