CWNP CWNA-109 Practice Exams
Last updated on Oct 23,2026- Exam Code: CWNA-109
- Exam Name: Certified Wireless Network Administrator
- Certification Provider: CWNP
- Latest update: Oct 23,2026
802. 11ax (HE) introduces Resource Units that can be used to allow communications with multiple devices at the same time, on the same channel, in the same BSS.
What feature of 802.1 lax provides this functionality?
- A . 6 GHz support
- B . TWT
- C . Wi-Fi-LTE
- D . OFDMA
As defined in the 802.11 specification, legacy Power Save requires an inefficient back-and-forth frame exchange process. Due to this inefficiency, many WLAN device implementations use a variation of 802.11 Power Save to accomplish the same function.
What non-standard power save behavior is used by most Wi-Fi devices in actual legacy Power Save implementations?
- A . Client devices ignore the TIM field and automatically send PS-Poll frames after every beacon.
- B . After each beacon, the AP attempts to empty its frame buffer by sending Wake-on-WLAN frames to wake each dozing client.
- C . Request-to-Send and Clear-to-Send frame exchanges are used to trigger the delivery of buffered data.
- D . The Beacon interval is changed from the default 100 time units to 10 or less time units.
- E . Clients send null data frames to the AP and switch the power management bit from 1 to 0 to receive queued data.
- F . Stations send a CTS-to-self frame to the AP with a very long duration period so they can receive all of their buffered data at once.
What are the names of the two additional U-NII bands proposed by the FCC that provide for 195 MHz of additional spectrum at 5 GHz? (Choose all that apply.)
- A . U-NII-1
- B . U-NII-2A
- C . U-NII-2B
- D . U-NII-2C
- E . U-NII-3
- F . U-NII-4
You are a small business wireless network consultant and provide WLAN services for various companies. You receive a call from one of your customers stating that their laptop computers suddenly started experiencing much slower data transfers while connected to the WLAN. This company is located in a multi-tenant office building and the WLAN was designed to support laptops, tablets and mobile phones.
What could cause a sudden change in performance for the laptop computers?
- A . The sky was not as cloudy that day as it typically is and the sun also radiates electromagnetic waves.
- B . A new tenant in the building has set their AP to the same RF channel that your customer is using.
- C . The antennas in the laptops have been repositioned.
- D . A few of your customer’s users have Bluetooth enabled wireless headsets.
As you prepare for a site survey in a multi-floor corporate office, you have learned about several wireless devices that support connection-oriented, real-time applications.
These applications are sensitive to service interruptions and require excellent signal quality, low latency, and low loss. For that reason, it is important to identify sources of RF interference as well as building characteristics that would cause RF blockage or dead spots.
What systems or environmental characteristics are most likely to cause interference or RF blockage and disrupt service for these applications? (Choose 2)
- A . Microwave ovens
- B . Narrow hallways
- C . Elevator shafts
- D . RFID chokepoints
- E . Workspace dividers
What factor is likely to cause the least impact on the application layer throughput of an 802.11n client station in a 2.4 GHz HT BSS?
- A . Increasing or decreasing the number of spatial streams in use by the client station and AP
- B . Implementing Fast BSS Transition (FT) for roaming
- C . Implementation of several other clients in the same BSS using 802.11g radios
- D . RF interference from more than 10 nearby Bluetooth transmitters
When using an RF splitter to connect one transceiver to sector antennas loss is incurred.
What is this loss called?
- A . Conversion loss
- B . Through loss
- C . Active loss
- D . Intentional loss
The WonderPuppy Coffee Company has hired you to make recommendations about deploying wireless hotspots inside 500 coffee shops across the country.
What solutions might you recommend? (Choose all that apply.)
- A . WPA2-Personal security solution
- B . 802.11 a/b/g/n access points at 100 mW transmit power
- C . 802.11a/b/g/n access points at 1 to 5 mW transmit power
- D . NEMA enclosures
- E . Captive portal authentication
- F . 802.1X/EAP security solution
The 802.11 legacy standard defines which wireless security solution?
- A . Dynamic WEP
- B . 802.1X/EAP
- C . 64-bit static WEP
- D . Temporal Key Integrity Protocol
- E . CCMP/AES
What is the biggest problem when enabling 5 GHz dynamic frequency selection (DFS) channels?
- A . Channel switch announcements
- B . False positives
- C . Co-channel interference
- D . Adjacent channel interference
- E . The 60-second wait time