CompTIA Network+ Practice Test 2026 - Free Network+ Practice Questions and Exam Prep Guide

The choice of higher cost due to using laser beams highlights a noteworthy characteristic of single-mode fiber cables. These cables transmit data using laser light, allowing for the transmission of signals over very long distances with minimal loss. However, the technology that facilitates this long-distance transmission is inherently more expensive than the light-emitting diodes (LEDs) used in multi-mode fiber cables.

This increased cost is attributed to several factors, including the precision required in manufacturing single-mode fibers and the sophisticated laser transmitters necessary for efficient operation. Additionally, the equipment and connectors compatible with single-mode fibers tend to be more costly. Consequently, while single-mode fiber offers superior performance over long distances, the financial implications can be a significant consideration when planning a network.

In contrast, while single-mode fiber is adept at handling distance, it does not have limited applications, nor is it prone to short transmission ranges. The focus on long-range communication means that it can be deployed effectively across various applications, especially where distance is a critical factor. Therefore, the characterization of single-mode fiber's disadvantage primarily revolves around its higher cost due to the advanced technology employed.