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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 CWNP's foundational vendor-neutral wireless LAN certification. The exam has 60 multiple-choice or multiple-answer questions in 90 minutes and requires 70% or higher to pass. The voucher costs $274.99 USD. In-person testing is at Prometric centers (since August 1, 2024); CWNP also offers Remote Proctored Exams. CWNA-109 can be taken until December 31, 2026.

Sample CWNA Practice Questions

Try these sample questions to review concepts for the CWNA exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 129+ 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-109 covers RF technologies, WLAN regulations and IEEE 802.11-2020 PHYs through Wi-Fi 6E, 802.11 protocols and devices, WLAN architecture and design, WLAN security including WPA3, and RF validation and remediation. It is vendor-neutral. Passing CWNA earns credit toward CWSP, CWDP, CWAP, and CWNE.

Exam sponsor: CWNP / Prometric. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

60 questions

Time Limit

90 minutes

Passing Score

70%

Exam / Certification Fees

$274.99

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

15%

Radio Frequency (RF) Technologies

RF behavior, math (dBm, EIRP), antennas, Fresnel zone, and MIMO

20%

WLAN Regulations and Standards

Industry bodies, 802.11 PHYs through Wi-Fi 6E, MCS, DFS, and TPC

20%

WLAN Protocols and Devices

Service sets, MAC framing, CSMA/CA, EDCA, roaming, and WLAN devices

15%

WLAN Network Architecture and Design Concepts

PoE, forwarding architectures, capacity design, and network services

10%

WLAN Network Security

WPA2/WPA3, SAE, OWE, 802.1X/EAP, PMF, and WIPS

20%

RF Validation and Remediation

Validation surveys, CCC vs ACI, application testing, and troubleshooting

Preparing for the CWNA Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 60 questions
  • Time limit: 90 minutes
  • Exam / certification fees: $274.99 Official sources

Using Our Practice Resources

  • Work through all 129 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

CWNA: Suggested Study Strategy

1Master RF math — EIRP calculations, the Rule of 10s and 3s, and dBm conversions appear frequently on the exam
2Study Wi-Fi 6 and Wi-Fi 6E (802.11ax HE) features that appear in the CWNA-109 PHY objectives, including OFDMA and 6 GHz operation
3Study site survey methodology — know the difference between predictive, passive, and active surveys
4Know the WPA3 topics in the CWNA-109 security domain, including SAE, OWE, and Protected Management Frames
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 Certified Wireless Network Administrator exam from CWNP. It covers RF technologies, WLAN regulations and IEEE 802.11-2020 PHYs through Wi-Fi 6E, 802.11 protocols and devices, WLAN architecture and design, WLAN security, and RF validation and remediation. The exam has 60 multiple-choice or multiple-answer questions, a 90-minute limit, and a 70% passing score. CWNA-109 can be taken until December 31, 2026.

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 is used by WLAN administrators, wireless engineers, and infrastructure specialists who deploy, manage, and troubleshoot vendor-neutral 802.11 networks. CWNP does not publish official salary figures. Many employers treat CWNA as evidence of RF and 802.11 fundamentals that transfer across Cisco, Aruba, Extreme, and other WLAN platforms.

Is CWNA certification worth it in 2026?

CWNP publishes CWNA as the foundational vendor-neutral WLAN certification in its program. Passing CWNA-109 earns the CWNA credential and credit toward CWSP, CWDP, CWAP, and CWNE. The certification is valid for three years. Recertify by passing CWSP, CWDP, or CWAP before expiry, or by retaking the current CWNA exam.

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.