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
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
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
What metric is most commonly used at the receiver to report the signal strength?
Select one:
- A . dBm
- B . Watt
- C . Milliwatt
- D . Nanowatt
At what point is RF power typically stipulated in milliwatts?
- A . At the transmitter
- B . Fifty feet from the transmitter
- C . At the receiver
- D . One hundred feet from the transmitter
How many channels are available in the 2.4 GHz frequency band in all regulatory domains?
Select one:
- A . 3
- B . 14
- C . 13
- D . 11
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
What antenna would be best for a long distance (more than 5 kilometers) bridge link?
Select one:
- A . Panel
- B . Parabolic dish
- C . Patch
- D . Omnidirectional
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
In what kind of device is a mini-PCIe 802.11 adapter most likely to be used?
- A . Desktop
- B . Mobile phone
- C . Laptop
- D . USB adapter
Of the following device types, which one is most likely to be used in a highly mobile (use while in motion) use case?
- A . Desktop
- B . Video camera
- C . VoIP handset
- D . Laptop
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
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
What device type is configured to respond when a probe request is received in a BSS?
- A . Desktop
- B . Switch
- C . Laptop
- D . AP
What process is used after authentication to generate and install encryption keys on 802.11 devices using WPA2?
- A . 802.1X port-based authentication
- B . Passphrase to PSK mapping algorithm
- C . EAP authentication
- D . 4-way handshake
What kind of authentication is used by WPA2-Enterprise implementations?
Select one:
- A . WEP
- B . Preshared key
- C . 802.1X/EAP
- D . Passphrase
What 802.11 process must always occur before 802.11 association?
- A . Time synchronization
- B . Authentication
- C . Confidentiality
- D . Encryption
A device is a 3×2:2 device.
How many spatial streams can it receive?
- A . 3
- B . 9
- C . 6
- D . 2
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
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
What is the maximum channel width recommended in the 2.4 GHz frequency band for 802.11n devices?
- A . 80 MHz
- B . 20 MHz
- C . 40 MHz
- D . 10 MHz
What can be configured in some client devices to encourage them to use 5 GHz APs whenever they are available?
- A . Band preference
- B . Gaming mode
- C . Band selection
- D . Roaming aggressiveness
What Windows Command Prompt command may be used to configure wireless settings on Windows
computers?
- A . TRACERT
- B . PING
- C . NETSH
- D . IPCONFIG
What EAP method is supported on most operating systems without additional installation requirements?
- A . EAP-GTC
- B . EAP-FAST
- C . EAP-TLS
- D . LEAP