CEDIA Gateway Practice Exam 2025 - Complete Exam Prep

The correct response indicates that communication cables within walls should not exceed a length of 90 meters. This specification is essential to ensure that the performance of the communication system is maintained. Exceeding this length can lead to increased attenuation and signal degradation, which can negatively impact data transmission quality.

In networking terms, Ethernet cables have a maximum length standard defined by the IEEE (Institute of Electrical and Electronics Engineers) to ensure optimal signal integrity. The 90-meter limit usually refers to the horizontal cabling distance, where the cable runs from a telecommunications room to the end-user device. Staying within this limit maximizes the effectiveness of the transmission, helps maintain acceptable data rates, and reduces the risk of interference that can arise with longer cable runs.

The other length options provided either fall short of or exceed this standard threshold and, therefore, would lead to suboptimal performance in communication systems.