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41.
Before performing a pre - deployment passive RF survey of a new deployment using survey
mapping software, which of the following must be performed?
- A.Determining AP transmit power
- B.Checking client DTPC settings
- C.Scaling the map
- D.Selecting antennas
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| Survey mapping software uses FSPL calculations in addition to recorded data. An improperly scaled map will alter the results provided by the software. |
42.
When you ’ re performing a passive survey and channel scan settings are set to all available
802.11 channels, what information will you gain? (Choose all that apply.)
- A.SSIDs of all APs
- B.Rogue APs
- C.AP channel and power settings
- D.BSSIDs of known APs
- Answer & Explanation
- Report
Answer : [B, D]
Explanation :
Explanation :
| When performing a passive survey using all channels, you gain optimal visibility of all APs that can be heard. That includes all known and all unknown APs. |
43.
Passive surveys performed using only the channels on which an existing WLAN is
operating have which of the following benefits?
- A.Longer scan times
- B.Same as default scan settings
- C.More information per channel
- D.Less roaming delay
- Answer & Explanation
- Report
Answer : [C]
Explanation :
Explanation :
| When you’ re performing a passive survey to analyze an existing WLAN, it is best to confi gure a passive survey client to scan only the channels that the WLAN operates on in order to have more data points for each AP. Channel scan settings set to their default values can spend too much time off channel and create gaps in data that can skew fi nal results. |
44.
You are being consulted to observe a spectrum analyzer recording and you notice strong RF
transmissions in narrow spikes across the entire band. What type of measurement have you
been shown?
- A.Swept spectrograph duty cycle
- B.Real - time FFT
- C.Return loss S12
- D.Max Hold
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| The spectrum plot showing signal strength across a frequency range (frequency domain) is called an FFT. |
45.
Active surveys benefit from what additional information versus a passive scan? (Choose all
that apply.)
- A.RSSI
- B.Signal to noise
- C.PHY rates
- D.Retries
- E.Loss
- Answer & Explanation
- Report
Answer : [C, D, E]
Explanation :
Explanation :
| Since active surveys associate to an AP, data can be recorded consistent with actual associated stations. |
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