CCNA Wireless 640-722 Official Cert Guide

Chapter 7

1. B, C, D. The transmit power directly affects the range of the AP’s signal. The supported modulation and coding schemes can affect the range because the simpler schemes can tolerate a lower SNR and a weaker signal, implying a greater range. The more complex schemes offer better data rates, but need a better signal quality within a shorter range. The supported data rates also affect the range because they directly affect the modulation and coding schemes that are used.

2. B. If you have already tested the AP’s signal and determined that it reaches every location in the lobby area, the problem is not that the AP’s transmit power is insufficient. Instead, the problem is occurring because the small client devices must be using a transmit ...