According to the CWNA website, RF technologies represent about one quarter of the CWNA exam. This includes learning how to apply RF math concepts like Watt/ Milliwatt, Decibel (dB), and gain / loss (dBm and dBi) to calculate WLAN power at the transmitter, between transmitter and antenna, and emitted by the antenna (EIRP). Although power conversion formulas include logarithms, the CWNA exam won't test your understanding of logarithmic...
functions -- instead, you'll use "rules of thumb" like this one: +3dB doubles the watt value; -3dB cut the watt value in half. In short, you'll only be required to demonstrate that you understand how WLAN components combine to determine RF power output and relationships between associated units of measurement.
Dig Deeper on Managing Wireless Networks
Related Q&A from Lisa Phifer, Wireless Expert
Are Cisco 1200 access points operated in “thick” or autonomous mode or as a thin AP, a lightweight access point that is controlled by a central ...continue reading
Wireless expert, Lisa Phifer addresses a query regarding Wi-Fi replacing Ethernet. Lisa provides analysis, advantages and disadvantages, and future ...continue reading
Lisa Phifer explains multiple access point configuration when a device tries to differentiate transmitted signals from each point and explains ...continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.