A force-directed graph displays nine named nodes, for example "Shashank" and "Divya," connected by weighted lines from a hard-coded JSON dataset. The visualization uses d3.v4 along with an older d3.v2 fallback. Circles and red text labels are manually styled with SVG attributes, while a custom `d3.layout.force()` applies gravity, distance, and charge parameters to position the nodes. Nodes are draggable, and their links update on each tick event.