Chapter 9 - Spectrum Analysis

Question 1

WHat is the name of the measurement defining the amount of time in which the amplitude of RF energy in a frequency range is above an arbitrary threshold?
a. Channel Impact
b. Sweep Cycle
c. Amplitude Duration
d. Duty Cycle

Answer 1

Duty Cyle

Question 2

When a spectrum analyzer shows the SSIDs detected on specific channels in the spectrum views, what feature is being implemented?
a. Wi-Fi integration
b. WLAN discovery
c. Protocol analysis
d. SSID arbitration

Answer 2

Wi-Fi integration

Question 3

When using a spectrum analyzer, which view shows you the RF energy present at a particular frequency over time?
a. The Real Time FFT
b. The Power Spectral density
c. The swept spectogram
d. The persistent BSSID

Answer 3

The swept spectogram (frequency over time)

Question 4

What is used to display the strength of the detected energy as a function of frequency?
a. the power spectral density
b. the waterfall view
c. the swept spectogram
d. the real time FFT

Answer 4

power spectral density

Question 5

What is the name given as a comparison of the level of signal power to the level of noise power?
a. Noise floor
b. SNR
c. SINR
d. Airtime utilization

Answer 5

SNR

Question 6

What could lead you to spectrum analysis after conducting protocol analysis analysis of a trouble service set?
a. Excessive retransmissions
b. HT greenfield mode not in use
c. Low data rates being observed
d. 160 MHz channel widths in use

Answer 6

Excessive retransmissisions