Difference between network diagram and network topology?

Solution 1:

A Network Topology is the actual design of a network. A Network Diagram is a diagram (drawing) of a network.

Network Topology:

Network topology is the arrangement of the various elements (links, nodes, etc.) of a computer network. Essentially, it is the topological structure of a network and may be depicted physically or logically.

Network Diagram:

A computer network diagram is a schematic depicting the nodes and connections amongst nodes in a computer network.