CWNP CWNA-109 Practice Exams
Last updated on Oct 24,2026- Exam Code: CWNA-109
- Exam Name: Certified Wireless Network Administrator
- Certification Provider: CWNP
- Latest update: Oct 24,2026
How long do all Wi-Fi radios have to exit a dynamic frequency selection (DFS) channel when a radar pulse is detected?
- A . 10 seconds
- B . 30 seconds
- C . 60 seconds
- D . 30 minutes
- E . 60 minutes
Which 802.11ac technology is the most revolutionary?
- A . 80 MHz and 160 MHz channel widths
- B . A-MPDU for all frames
- C . 256-QAM modulation
- D . 5 GHz only frequencies
- E . MU-MIMO
- F . Explicit beamforming
You are deploying a WLAN monitoring solution that utilizes distributed sensor devices.
Where should sensors be deployed for best results? Choose the single best answer.
- A . In switching closets
- B . Every 5 meters and alongside each AP
- C . In critical areas where WLAN performance must be high
- D . Above the plenum on each floor
The azimuth chart represents a view of an antenna’s radiation pattern from which direction?
- A . Top
- B . Side
- C . Front
- D . Both top and side
Transmit beamforming uses what type of frames to analyze the MIMO channel before transmitting directed paths of data?
- A . Trigger frames
- B . Beaming frames
- C . Sounding frames
- D . SM power save action frames
What additional documentation is usually provided along with the final site survey deliverable? (Choose all that apply.)
- A . Bill of materials
- B . Implementation diagrams
- C . Network topology map
- D . Project schedule and costs
- E . Access point user manuals
ABC Company has a 2.4 and 5 GHz WLAN deployment. DFS functionality is enabled as required by the regulatory domain and APs use DFS channels as long as radar is not detected. Band steering is also enabled to encourage dual-band clients to use frequency bands with more capacity.
Your performance analysis shows that many dual-band VoWiFi client devices will move back and forth between 2.4 and 5 GHz as the users roam throughout the building. All APs have 2.4 and 5 GHz radios enabled with transmit power adjusted to accommodate relatively similar cell sizes. This “band hopping” behavior is viewed by network staff to be undesirable.
What is the most likely cause of the unpredictable client band selection behavior?
- A . Interference from 5 GHz radar sources has increased frame corruption and retries on channels 36- 48.
- B . 5 GHz frequencies offer better RF penetration than 2.4 GHz, but 2.4 GHz offers more voice call capacity and lower latency than 5 GHz.
- C . The voice client does not support DFS, and therefore experiences some 5 GHz coverage holes as it moves through the network.
- D . The client’s band selection algorithm prefers 5 GHz, but band steering behavior usually steers 75- 85% of client devices to 2.4 GHz.
Jane Barrett is installing a controller-based wireless network that uses both software and hardware to monitor and dynamically change the power and channel settings of the APs.
This technology is known as what? (Choose all that apply.)
- A . Dynamic rate selection (DRS)
- B . Radio resource management (RRM)
- C . Adaptive radio configuration (ARC)
- D . Self-organizing wireless LAN
What are some of the key differences and advantages of OFDMA over MU-MIMO with 802.11ax radios? (Choose all that apply.)
- A . Increased efficiency
- B . Increased capacity
- C . Best for high-bandwidth applications
- D . Best for low-bandwidth applications
- E . Best with small packets
- F . Best with large packets
In an 802.11n WLAN with a heterogeneous set of associated client devices including 802.11b, 11g, and 11n, what HT protection mode will the BSS use?
- A . Mode 0: No protection mode (Greenfield)
- B . Mode 1: Nonmember protection mode
- C . Mode 2: 20 MHz protection mode
- D . Mode 3: Non-HT mixed mode