Exam 350-401 topic 1 question 113 discussion

Correct Options are B & D.

B & D. Study Guide book signal-to-noise ratio (SNR) A measure of received signal quality, calculated as the difference between the signal’s RSSI and the noise floor. A higher SNR is preferred.

SNR: signal-to-noise ratio RSSI: Received Signal Strength Indicator NF: Noise floor SNR(dB) = RSSI(dBm) - NF(dBm) RSSI is the power of the received signal.

B & D are correct To compute the SNR (Signal-to-Noise Ratio), you need the following two pieces of information: noise floor: This is the measure of the level of background noise in the environment. RSSI (Received Signal Strength Indicator): This indicates the strength of the received signal.

SNR (dB) = P received_signal (dBm) - P noise (dBm)

The correct answers are B. noise floor and D. RSSI. Signal-to-Noise Ratio (SNR) is a measure of the signal strength relative to the background noise level in a wireless communication system. To compute SNR, the following two pieces of information are necessary: Noise floor: The noise floor is the level of background noise present in the wireless environment. It represents the total power of all interfering signals, thermal noise, and other sources of noise. The noise floor is typically measured in decibels (dB) and is an important factor in determining the SNR. Received Signal Strength Indicator (RSSI): RSSI is a measurement of the power level of the received signal at the receiver. It represents the strength of the signal as perceived by the receiver and is typically measured in dBm (decibels relative to milliwatts). RSSI provides information about the received signal power, which is necessary to calculate the SNR.

The graph in the book clearly shows RSSI and Noise floor for snr calculations..

Ref: Signal-to-noise ratio – Wikipedia “… Definition Signal-to-noise ratio is defined as the ratio of the power of a signal (meaningful input) to the power of background noise (meaningless or unwanted input): …” A. transmit power Correct answer. B. noise floor Correct answer. C. EIRP Wrong answer. D. RSSI Wrong answer. E. antenna gain Wrong answer.

The RSSI value focuses on the expected signal alone, without regard to any other signals that may also be received, like noise!

Transmit power is not taken into account to calculate SNR, B and D are the correct ones.

It should be BD

RSSI is significant in calculating SNR as explained many times here, just wanted to place a vote

The correct answer is: B. noise floor D. RSSI

B and D are correct.

B&D is the correct answer!!

B&D simply, antenna gain and transmit power are measurement of EIRP, so noise floor and RSSI are correct ones

noise floor and RSSI...