How many non-overlapping channels are available in regulatory domains in the 2.4 GHz frequency band?
Select one:
A . 14
B . 1
C . 3
D . 11
Answer: C
What best describes passive scanning used to locate WLANs?
What best describes passive scanning used to locate WLANs?
A . Sending probe requests and listening for probe responses
B . Scanning in only on frequency band
C . Listening for beacon frames from the APs
D . Scanning on only one channel
Answer: C
How many spatial streams can it receive?
A device is a 3×2:2 device.
How many spatial streams can it receive?
A . 3
B . 9
C . 6
D . 2
Answer: D
What can occur when two copies of a signal wave arrive at the receiver at the same time, but 180 degrees out of phase which each other?
What can occur when two copies of a signal wave arrive at the receiver at the same time, but 180 degrees out of phase which each other?
A . Increased signal amplitude
B . Bits may be added to the total count
C . Increased signal strength
D . Signal nulling or cancellation
Answer: D
What is the maximum channel width supported by 802.11ac (VHT) in the standard?
What is the maximum channel width supported by 802.11ac (VHT) in the standard?
A . 40 MHz
B . 80 MHz
C . 160 MHz
D . 20 MHz
Answer: C
What kind of antenna chart shows the radiation pattern of an antenna from the side view of that antenna?
What kind of antenna chart shows the radiation pattern of an antenna from the side view of that antenna?
A . Top-down
B . Azimuth
C . Horizontal
D . Elevation
Answer: B
What is defined as the bending of an RF wave as it passes through a medium?
What is defined as the bending of an RF wave as it passes through a medium?
Select one:
A . Reflection
B . Refraction
C . Absorption
D . Scattering
Answer: B
regulatory domain allows them all?
How many non-overlapping 20 MHz channels are available in the 5 GHz frequency band assuming the
regulatory domain allows them all?
A . 11
B . 25
C . 24
D . 14
Answer: C
In what way are 802.11 channels defined?
In what way are 802.11 channels defined?
A . By a high frequency and channel width
B . By channel width alone
C . By a center frequency and channel width
D . By a low frequency and channel width
Answer: B
What is a common problem in specialty Wi-Fi devices?
What is a common problem in specialty Wi-Fi devices?
A . The use of 802.11 VHT-only chipsets
B . The use of older, less capable 802.11 chipsets
C . The use of 802.11 DSSS-only chipsets
D . The use of newer, more capable 802.11 chipsets
Answer: B