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100+ Free CWNA Practice Questions

Pass your CWNP Certified Wireless Network Administrator (CWNA-109) exam on the first try — instant access, no signup required.

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A wireless client reports intermittent disconnections at certain times of the day. Which troubleshooting tool would best help identify the root cause?

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2026 Statistics

Key Facts: CWNA Exam

70%

Passing Score

CWNP

60

Exam Questions

90 minutes

60-100 hrs

Study Time

Recommended

$274.99

Exam Fee

CWNP

3 years

Certification Valid

CWNP

Vendor-neutral

Certification Type

CWNP

CWNA-109 is the foundational CWNP certification covering wireless networking fundamentals including RF technology, 802.11 standards (Wi-Fi 6/6E/7), WLAN design, security (WPA3), and troubleshooting. The exam has 60 questions in 90 minutes requiring 70% to pass. CWNA is vendor-neutral and recognized across the wireless industry. It is a prerequisite for CWSP, CWDP, CWAP, and CWNE certifications. The exam costs $274.99 and is delivered through Pearson VUE.

Sample CWNA Practice Questions

Try these sample questions to test your CWNA exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1What is the primary purpose of the preamble in an 802.11 frame?
A.To encrypt the payload data
B.To synchronize the receiver's clock with the incoming signal
C.To authenticate the sending device
D.To establish a VPN tunnel
Explanation: The preamble in an 802.11 frame is used to synchronize the receiver's clock with the incoming RF signal. It contains a known bit pattern that allows the receiver to detect the start of a frame and lock onto the signal timing. Encryption is handled by security protocols, authentication by management frames, and VPN tunnels operate at higher layers.
2Which frequency band does Wi-Fi 6E (802.11ax) extend operations into?
A.900 MHz
B.2.4 GHz
C.5 GHz
D.6 GHz
Explanation: Wi-Fi 6E extends 802.11ax operations into the 6 GHz band (5.925-7.125 GHz), providing up to 1200 MHz of additional spectrum. This new band offers less congestion and more available channels compared to the crowded 2.4 GHz and 5 GHz bands. The 900 MHz band is used by other wireless technologies but not standard Wi-Fi.
3What does RSSI stand for in wireless networking?
A.Radio Signal Strength Indicator
B.Received Signal Strength Indicator
C.Remote Signal Stability Index
D.Received Signal Stability Indicator
Explanation: RSSI stands for Received Signal Strength Indicator. It is a measurement of the power level of a received radio signal, typically expressed in dBm. RSSI values help network administrators assess coverage, plan AP placement, and troubleshoot connectivity issues. It is a relative measurement that varies by vendor implementation.
4In RF terminology, what happens when a radio wave encounters a wall and passes through it with reduced amplitude?
A.Reflection
B.Diffraction
C.Absorption
D.Scattering
Explanation: Absorption occurs when an RF signal passes through a material (such as a wall) and loses energy in the process, resulting in reduced signal amplitude. The material converts some of the RF energy into heat. Reflection is when the signal bounces off a surface, diffraction is bending around obstacles, and scattering occurs when a signal splits into multiple weaker signals upon hitting an irregular surface.
5What is the maximum channel width supported by 802.11ax (Wi-Fi 6)?
A.40 MHz
B.80 MHz
C.160 MHz
D.320 MHz
Explanation: 802.11ax (Wi-Fi 6) supports a maximum channel width of 160 MHz, the same as 802.11ac Wave 2. This can be achieved either as a contiguous 160 MHz channel or as 80+80 MHz non-contiguous channels. The 320 MHz channel width was introduced later with 802.11be (Wi-Fi 7). The 40 MHz and 80 MHz options are supported but are not the maximum.
6Which antenna type radiates a signal pattern equally in all horizontal directions?
A.Yagi antenna
B.Parabolic dish antenna
C.Omnidirectional antenna
D.Patch antenna
Explanation: An omnidirectional antenna radiates RF energy equally in all horizontal directions (360 degrees in the azimuth plane), creating a donut-shaped radiation pattern. Yagi and parabolic dish antennas are highly directional, focusing energy in a narrow beam. Patch antennas are semi-directional, radiating in a hemispherical pattern typically used for wall-mounted indoor coverage.
7What is the purpose of a site survey in WLAN deployment?
A.To test internet speed from the ISP
B.To determine optimal AP placement, coverage, and capacity requirements
C.To configure firewall rules
D.To install network cabling
Explanation: A site survey is conducted to determine optimal access point placement, verify RF coverage, identify sources of interference, and ensure the WLAN design meets capacity and performance requirements. It involves physical inspection of the environment and RF measurements. Testing ISP speed, configuring firewalls, and installing cabling are separate network tasks.
8What unit is used to express absolute RF power levels?
A.dBi
B.dBd
C.dBm
D.dB
Explanation: dBm (decibels relative to one milliwatt) is used to express absolute RF power levels. A value of 0 dBm equals 1 milliwatt. dBi and dBd are units for antenna gain relative to an isotropic or dipole antenna respectively. dB (decibel) alone represents a relative ratio between two values, not an absolute power level.
9Which security protocol introduced Simultaneous Authentication of Equals (SAE) to replace PSK?
A.WEP
B.WPA
C.WPA2
D.WPA3
Explanation: WPA3 introduced Simultaneous Authentication of Equals (SAE), which replaces the Pre-Shared Key (PSK) exchange used in WPA2-Personal. SAE provides stronger protection against offline dictionary attacks by using a zero-knowledge proof protocol. Even if a passphrase is relatively simple, SAE makes it computationally infeasible for attackers to crack captured handshakes offline.
10What is the typical maximum indoor range of a 2.4 GHz Wi-Fi signal compared to a 5 GHz signal?
A.2.4 GHz has shorter range than 5 GHz
B.2.4 GHz and 5 GHz have identical range
C.2.4 GHz has longer range than 5 GHz
D.Range is determined only by antenna type, not frequency
Explanation: 2.4 GHz signals propagate farther than 5 GHz signals because lower frequencies experience less free-space path loss and penetrate solid materials more effectively. However, 2.4 GHz is more susceptible to interference from other devices (microwaves, Bluetooth). While antenna type does affect range, frequency is a fundamental factor in RF propagation characteristics.

About the CWNA Exam

The foundational CWNP certification for wireless networking professionals. CWNA validates skills in RF fundamentals, 802.11 standards (Wi-Fi 6/6E/7), WLAN design and site surveys, antenna theory, wireless security (WPA3), QoS, and troubleshooting. It is vendor-neutral and serves as the prerequisite for all professional-level CWNP certifications.

Questions

60 scored questions

Time Limit

90 minutes

Passing Score

70%

Exam Fee

$274.99 (CWNP / Pearson VUE)

CWNA Exam Content Outline

15%

RF Technologies

RF behavior, propagation, math (dBm, EIRP), Fresnel zone, and regulatory

25%

802.11 Standards and Protocols

Wi-Fi 6/6E/7, OFDMA, MU-MIMO, BSS coloring, frame types, and QoS

20%

WLAN Design and Architecture

Site surveys, AP placement, antenna types, cell sizing, and controllers

20%

Network Security

WPA3-SAE, WPA3-Enterprise, 802.1X/EAP, RADIUS, PMF, and rogue detection

20%

WLAN Troubleshooting

Interference analysis, roaming, spectrum/protocol analysis, and performance

How to Pass the CWNA Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 60 questions
  • Time limit: 90 minutes
  • Exam fee: $274.99

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

CWNA Study Tips from Top Performers

1Master RF math — EIRP calculations, the Rule of 10s and 3s, and dBm conversions appear frequently on the exam
2Understand Wi-Fi 6/6E technologies (OFDMA, BSS coloring, TWT) as the CWNA-109 heavily covers these topics
3Study site survey methodology — know the difference between predictive, passive, and active surveys
4Know the WPA3 security improvements over WPA2, including SAE, PMF, and 192-bit Enterprise mode
5Practice identifying interference sources and troubleshooting wireless connectivity issues
6Use our AI tutor to understand antenna radiation patterns and their impact on WLAN design

Frequently Asked Questions

What is the CWNA-109 exam?

CWNA-109 is the current version of the Certified Wireless Network Administrator exam from CWNP. It covers RF fundamentals, 802.11 standards including Wi-Fi 6/6E and Wi-Fi 7, WLAN design and site surveys, wireless security (WPA3), and troubleshooting. The exam has 60 multiple-choice questions with a 90-minute time limit, requiring a 70% score to pass.

How hard is the CWNA exam?

CWNA is considered an intermediate-difficulty exam. The RF math section (EIRP calculations, Rule of 10s and 3s) challenges many candidates, and the breadth of 802.11 standards requires thorough study. With 60-100 hours of preparation over 6-10 weeks, including hands-on experience with wireless equipment, most candidates are well-prepared.

What jobs can I get with CWNA certification?

CWNA certifies you for roles including: Wireless Network Engineer ($75-110K), WLAN Administrator ($65-95K), RF Engineer ($80-120K), Network Design Specialist ($70-100K), and IT Infrastructure Engineer with wireless focus. CWNA is recognized across vendors (Cisco, Aruba, Ruckus, Meraki) as a vendor-neutral wireless expertise validation.

Is CWNA certification worth it in 2026?

Yes — CWNA remains the industry's premier vendor-neutral wireless certification. With Wi-Fi 6E deployment accelerating and Wi-Fi 7 arriving, wireless expertise is in high demand. CWNA validates skills applicable across all vendor platforms and is the prerequisite for advanced CWNP certifications (CWSP, CWDP, CWAP, CWNE).

What is the difference between CWNA and other wireless certifications?

CWNA is vendor-neutral, covering wireless fundamentals applicable to any platform. Vendor-specific certs like Cisco's CCNP Enterprise Wireless or Aruba's ACCP focus on specific product configuration. CWNA provides the foundational RF and protocol knowledge, while vendor certs add product-specific implementation skills. Many professionals hold both CWNA and a vendor certification.