What does RSSI measure in a wireless context?

In a wireless context, Received Signal Strength Indicator is the correct definition of RSSI. It quantifies the power level received by a wireless device from a signal being transmitted by an access point or another wireless device. This measurement is crucial for determining the quality of the connection and influences various aspects of wireless communications, like roaming decisions and the overall performance of the network.

RSSI is expressed in decibels relative to 1 milliwatt (dBm) and provides a gauge of how well the device can receive the signal. A higher RSSI value typically indicates a stronger signal and a better quality connection, while a lower RSSI value points to a weaker signal, potentially leading to connectivity issues or reduced data transfer rates.

The other options, while appearing valid at first glance, do not accurately represent the term RSSI. The term "Relative Signal Strength Indicator" misrepresents the standard definition, and "Real-time Signal Strength Intensity" and "Rapid Signal Strength Integration" do not correspond to any recognized concept in wireless communications. Therefore, Received Signal Strength Indicator is the only accurate and accepted definition in this context.