Certified Wireless Network Administrator (CWNA) Practice Test 2026 - Free Wireless Network Administrator Practice Questions and Study Guide

In the context of RF cables and connectors used in 802.11 WLAN systems, the correct statement is that every RF connector causes insertion loss.

Insertion loss refers to the reduction in signal strength that occurs when a signal passes through a connector or cable. This loss is a natural consequence of the physical properties of the materials and the design of the connectors themselves. As signals pass through connectors and cables, some of the energy can be absorbed or scattered, leading to a diminished signal at the receiving end. This is a critical factor in wireless communications, where maintaining signal strength is vital for performance and reliability.

The other statements do not align with the characteristics of RF cables and connectors. RF cables are not all identical in performance; they vary based on construction, materials, and specifications such as attenuation and shielding. Additionally, RF connectors do indeed have frequency range specifications, which determine the frequency bands over which they can effectively transmit signals. Lastly, while there are many types of RF connectors that serve similar purposes, they are not universally compatible; different types require specific mating components. Understanding these differences is vital for effective network design and troubleshooting in wireless systems.