In a vibrating spring fixed at both ends, nodes occur where there is minimal displacement, while antinodes represent points of maximum displacement. The fixed ends of the spring create a pattern of reflection, leading to alternating regions of compression and rarefaction. During a complete cycle, maximum compression coincides with maximum rarefaction at different points. This relationship highlights that nodes and antinodes are positioned opposite to compression and rarefaction regions. Understanding this dynamic is crucial for analyzing wave behavior in fixed systems.