CompTIA Network+ N10-009 Practice Question

For connections spanning 15 kilometers, single mode fiber is the most suitable option. It is specifically designed for long distances as it uses a smaller diameter that allows light to travel in a direct path, minimizing signal loss and delay. While multimode fiber could potentially be considered for shorter distances due to its ability to transmit data at high speeds, its larger core size leads to higher modal dispersion, making it less effective over long distances.