CWNP CWNA-109 Certified Wireless Network Administrator Online Training
CWNP CWNA-109 Online Training
The questions for CWNA-109 were last updated at Jul 24,2025.
- Exam Code: CWNA-109
- Exam Name: Certified Wireless Network Administrator
- Certification Provider: CWNP
- Latest update: Jul 24,2025
CSMA/CA and DCF define which mechanisms that attempt to ensure that only one 802.11 radio can transmit on the half-duplex RF medium? (Choose all that apply.)
- A . Random backoff timer
- B . NAV
- C . CCMP
- D . CCA
- E . Interframe spacing
When is an 802.11ac AP transmitting on 5 GHz required by the IEEE 802.11-2020 standard to respond to probe request frames from nearby client stations? (Choose all that apply.)
- A . When the probe request frames contain a null SSID value
- B . When the probe request client is also an 802.11ac radio
- C . When the probe request is encrypted
- D . When the probe request has the Power Management bit set to 1
- E . When the probe request frames contain the correct SSID value
What type of interference is caused by overlapping coverage cells with overlapping frequencies?
- A . Intersymbol interference
- B . Adjacent channel interference
- C . All-band interference
- D . Narrowband interference
- E . Co-channel interference
Which two 802.11 topologies require the use of an AP?
- A . IBSS
- B . BSS
- C . PBSS
- D . ESS
In WLAN security, which authentication methods always create Layer 2 dynamic encryption keys? (Choose 2)
- A . HTTPS Captive Portal
- B . WEP
- C . WPA2-PSK
- D . EAP-TLS
- E . Shared Key
- F . TKIP
What phrase defines Equivalent Isotropically Radiated Power (EIRP)?
- A . The power output from the radio into the RF cable
- B . The power output from the radio after cable losses
- C . The highest RF signal strength that is transmitted from a given antenna
- D . Reflected power due to an impedance mismatch in the signal path
- E . Power supplied from the transmission line to the antenna input
What are some popular 802.11 applications used in the healthcare industry? (Choose all that apply.)
- A . VoWiFi
- B . Bridging
- C . RTLS
- D . Patient monitoring
What documents might be needed prior to performing an indoor site survey for a new wireless LAN? (Choose all that apply.)
- A . Blueprints
- B . Network topography map
- C . Network topology map
- D . Coverage map
- E . Frequency map
In the 1970’s _______ had a wireless communication model for transmitting between islands.
- A . China
- B . Hawaii
- C . Alaska
- D . Russia
If an 802.11 RF transmission reaches a receiving antenna simultaneously by direct and reflected paths, what effect will the reflected signal have on the signal that took the direct line-of-sight path?
- A . The direct signal will only be received if the reflected signal is more than 180 degrees out of phase.
- B . The direct signal cannot be received if the indirect signal is less than 90 degrees out-of-phase.
- C . The signals will be distorted if the indirect signal arrives simultaneously at the receiver, but 90 degrees out-of-phase.
- D . If the signals are in-phase, they will combine together, cancel one another out, and create a null.
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