Which unit of measure is used to measure wireless RF SNR?
Which unit of measure is used to measure wireless RF SNR?
The unit of measure used to measure wireless RF Signal-to-Noise Ratio (SNR) is decibels (dB). The SNR quantifies the level of the desired signal compared to the level of background noise and is typically expressed in dB.
A. dBi (decibels isotropic) - Used to measure the gain of an antenna compared to an isotropic radiator. B. dB (decibels) - Used to measure the signal-to-noise ratio (SNR) in wireless RF communication. C. dBm (decibel-milliwatts) - Used to measure the absolute power level of a signal relative to 1 milliwatt. D. mW (milliwatts) - Used to measure absolute power level directly, without using a logarithmic scale like dB or dBm.
dB its to SNR https://documentation.meraki.com/MR/Wi-Fi_Basics_and_Best_Practices/Signal-to-Noise_Ratio_(SNR)_and_Wireless_Signal_Strength
bBm is for RSSI power that can be measured in W. dB is the difference between RSSI leves. Answer is B
The difference between the signal and the noise is called the signal-to-noise ratio (SNR), measured in dB.
SNR in dB
SNR is in dB
C looks correct https://www.sonicwall.com/support/knowledge-base/rf-basic-background-signal-strength-and-snr/170505562736646/#:~:text=SNR%20(Signal%20to%20Noise%20Radio,to%20be%20considered%20during%20deployment.
B is correct
B is correct
i think it also B https://documentation.meraki.com/MR/Wi-Fi_Basics_and_Best_Practices/Signal-to-Noise_Ratio_(SNR)_and_Wireless_Signal_Strength
From that link it says dB answer needs to be B.