Chapter 3 quiz Flashcards
What metric is often used for indoor AP output power definition?
W
mW
dBm
dBi
mW
What signal metric has been become very popular for both transmit and receive power levels?
W
RSSI
dBm
dBi
RSSI (Received Signal Strength Indicator)
Why is RSSI metric not typically a good signal metric for comparison across vendors?
a. each vendor specifies the RSSI percentage formula differently
b. each vendor specifies the rssi_max value differently
c. RSSI is no longer supported in WLAN devices
d. RSSI is not a signal metric; it is a modulation method
Each vendor specifies the RSSI__MAX value differently
You start with a power level of 50 mW and add 7 dB, what is the resulting power level?
500 mW
100 mW
200 mW
250 mW
250 mW
An AP has an output power setting of 20 dBm. The antennas provide 5 dB of gain. What is the EIRP?
500 mW
320mW
3200 mW
4 mW
320 mW
An AP has an output power setting of 13 dBm. The antenna is directly connected and has 3 dBi gain. What is the output power at the IR?
400 mW
40 mW
100 mW
20 mW
20 mW
You are calculating an outdoor bridge link. You have determined the bridge output power levels, antenna gain, and losses incurred by all cables and connectors on both ends. What additional factor is missing?
FSPL
RSSI
Fade Margin
Wind resistance
FSPL (Free Space Path loss)
How do you calculate the dBi of an antenna when the gain is provided in dBd?
Subtract 2.14
Add 2.14
Multiply by 2.14
Divide by 2.1
Added 2.14
You are calculating power levels and have been given the following values: +3dB, +5dB, -21 dB, +11dB, and +3dB. How can you simplify the calculation?
Just use the value +1 dB
Ignore the negative values
Ignore the positive values
You cannot simplify if you must calculate all dB changes in sequence
Just use the value +1 dB
What metric is preferred by engineers and Is used to represent received signal strength?
RSSI
dB
dBm
frequency
dBm
