Free 350-101 sample questions

Correct answer: -67 dBm

SNR (Signal-to-Noise Ratio) is calculated as the difference between the received signal strength (RSSI) and the noise floor. The formula is: SNR = RSSI - Noise Floor. To find the minimum RSSI, rearrange the formula: RSSI = SNR + Noise Floor. Given an SNR requirement of 25 dB and a noise floor of -92 dBm, the calculation is 25 + (-92) = -67 dBm.

Correct answer: Cross-polarization loss

Antenna polarization describes the orientation of the electric field of the radio wave. If a transmitting antenna is vertically polarized and the receiving antenna is horizontally polarized, there is a 90-degree mismatch. This results in cross-polarization loss, which can attenuate the signal by as much as 20 dB or more, severely degrading the link budget.

Correct answer: True

True. EIRP is the total actual power radiated by the antenna. It is calculated as: EIRP = Transmitter Power (dBm) - Cable/Connector Loss (dB) + Antenna Gain (dBi).

Correct answers: Devices with a single spatial stream (1x1) will consume more airtime than 2x2 devices to transmit the same amount of data, assuming identical modulation.; Smartphones generally have poorer receive sensitivity and lower transmit power than enterprise APs, often leading to asymmetric link conditions.

Devices with fewer spatial streams (like 1x1 smartphones) have lower maximum data rates compared to 2x2 or 3x3 devices. Consequently, they take longer to transmit the same payload, consuming more valuable airtime and reducing overall cell capacity. Furthermore, mobile devices often have weaker transmit power, requiring APs to have excellent receive sensitivity to maintain symmetrical links.

Devices with fewer spatial streams (like 1x1 smartphones) have lower maximum data rates compared to 2x2 or 3x3 devices. Consequently, they take longer to transmit the same payload, consuming more valuable airtime and reducing overall cell capacity. Furthermore, mobile devices often have weaker transmit power, requiring APs to have excellent receive sensitivity to maintain symmetrical links.

Correct answer: -74 dBm

The Link Budget calculation formula is: RSL = Tx Power - Tx Cable Loss + Tx Antenna Gain - FSPL + Rx Antenna Gain - Rx Cable Loss. Calculation: 15 - 2 + 12 - 110 + 14 - 3 = -74 dBm. The visual flow in the question accurately represents this addition and subtraction chain.

Correct answer: The signal strength decreases by 6 dB.

According to the 6 dB rule, which is derived from the inverse square law of radio wave propagation, doubling the distance from the transmitter results in a loss of 6 dB of signal strength in a free-space environment. Conversely, halving the distance increases the signal by 6 dB.