A yellow smiley face is rendered as an SVG using React. The face consists of a large yellow circle with a black stroke, and two black circles representing eyes, positioned symmetrically around the center. The example demonstrates using React’s `ReactDOM.render` to mount a functional component that returns SVG elements. It defines constants for dimensions and offsets to position the face and eyes, and uses React’s JSX syntax to create the circles. The rendering is client-side, with a fixed viewport size of 960 by 500 pixels.