CWNA-109 Certified Wireless Network Administrator — Questions and Answers

Question 1: Which regulatory domain body governs WLAN transmit power and channel usage rules in the United States?

ITU-R
ANACOM
FCC (Correct answer)
ETSI

Correct answer: FCC

The Federal Communications Commission (FCC) regulates the use of radio frequency spectrum in the US, including transmit power limits and channel allocations for WLANs.

Question 2: A hospital deploys wireless systems for medical telemetry. Which frequency band is specifically reserved by the FCC for wireless medical telemetry?

5 GHz UNII band
2.4 GHz ISM band
900 MHz ISM band
608–614 MHz and 1395–1400 MHz WMTS bands (Correct answer)

Correct answer: 608–614 MHz and 1395–1400 MHz WMTS bands

The FCC designates Wireless Medical Telemetry Service (WMTS) bands including 608–614 MHz and 1395–1400 MHz specifically for medical telemetry devices.

Question 3: A WLAN administrator is asked to brief the board on wireless security posture. Which approach is MOST appropriate?

Read through the full WPA3 specification
Summarize current controls, recent incidents, compliance status, and pending risk items in a one-page executive brief (Correct answer)
Decline and ask the CISO to present instead
Provide raw IDS/IPS alert logs from the last 30 days

Correct answer: Summarize current controls, recent incidents, compliance status, and pending risk items in a one-page executive brief

Board-level audiences need high-level summaries of risk posture, controls, and gaps — not raw technical data.

Question 4: A CWNA professional is mentoring a junior technician. Which behavior BEST models ethical professional standards?

Withholding technical knowledge to maintain competitive advantage
Sharing accurate information, citing sources, and encouraging certification study (Correct answer)
Recommending unnecessary equipment to increase project billing
Taking sole credit for team accomplishments

Correct answer: Sharing accurate information, citing sources, and encouraging certification study

Ethical professionals share knowledge, cite sources accurately, and support the development of colleagues, contributing to the advancement of the profession.

Question 5: How do CWNA professionals contribute to advancing their field?

By maintaining current practices
By conducting research, sharing outcomes, mentoring others, and participating in professional forums (Correct answer)
By competing with colleagues
Individual contribution is not possible

Correct answer: By conducting research, sharing outcomes, mentoring others, and participating in professional forums

This is fundamental to Wireless Network Administrator practice. By conducting research, sharing outcomes, mentoring others, and participating in professional forums represents the professional standard for research in the CWNA certification framework.

Question 6: What is reflective practice in Wireless Network Administrator professional development?

Only reflecting on successes
Writing personal diaries
Avoiding past mistakes
Systematically examining experiences to gain insight and improve future practice (Correct answer)

Correct answer: Systematically examining experiences to gain insight and improve future practice

This is fundamental to Wireless Network Administrator practice. Systematically examining experiences to gain insight and improve future practice represents the professional standard for practical in the CWNA certification framework.

Question 7: A wireless team finds conflicting SNR thresholds recommended by two different vendors for VoWiFi deployments. What is the most evidence-based way to resolve this conflict?

Test both thresholds in a representative environment and measure call quality metrics (MOS, jitter, packet loss) (Correct answer)
Use whichever threshold requires fewer APs
Average the two thresholds
Use the threshold from the more expensive vendor

Correct answer: Test both thresholds in a representative environment and measure call quality metrics (MOS, jitter, packet loss)

Empirically testing both thresholds against objective voice quality metrics (MOS, jitter) in the actual environment resolves vendor conflicts with direct evidence.

Question 8: Which professional practice is most important when a CWNA engineer discovers a serious security vulnerability during a client engagement?

Document and disclose the finding to the client promptly (Correct answer)
Fix it immediately without notifying the client
Publish the vulnerability publicly to pressure the vendor
Ignore it if it falls outside the project scope

Correct answer: Document and disclose the finding to the client promptly

Professional ethics require that discovered vulnerabilities be documented and disclosed to the client promptly so they can make informed decisions.

Question 9: In WLAN design, what does 'cell overlap' refer to?

The region beyond an AP's maximum coverage boundary
The dead zone between two APs where neither signal is usable
The area where the coverage zones of two or more APs intersect (Correct answer)
The interference zone directly around an AP antenna

Correct answer: The area where the coverage zones of two or more APs intersect

Cell overlap is the intentional area where signals from adjacent APs intersect, which is required so that roaming clients can detect the next AP before losing the current one.

Question 10: Which 5 GHz UNII sub-band requires Dynamic Frequency Selection (DFS) and Transmit Power Control (TPC)?

UNII-3 (5.725–5.825 GHz)
UNII-1 (5.15–5.25 GHz)
UNII-4 (5.85–5.925 GHz)
UNII-2 (5.25–5.35 GHz) (Correct answer)

Correct answer: UNII-2 (5.25–5.35 GHz)

UNII-2 (and UNII-2 Extended) channels require DFS and TPC because they overlap with radar frequencies used by military and weather systems.

Question 11: What is the purpose of a post-deployment validation survey?

To update AP firmware to the latest version after installation
To plan initial AP placement before installation
To add additional APs to an already operational network
To verify that the deployed WLAN meets the original design requirements (Correct answer)

Correct answer: To verify that the deployed WLAN meets the original design requirements

A post-deployment validation survey confirms that the installed WLAN achieves the coverage, capacity, and performance targets specified in the design and site survey.

Question 12: In a WPA2-Enterprise deployment, what role does the wireless access point play in the 802.1X authentication process?

Supplicant
Authentication server
Authenticator (Correct answer)
Certificate authority

Correct answer: Authenticator

The AP acts as the 802.1X authenticator, relaying EAP messages between the supplicant (client) and the RADIUS authentication server.

Question 13: A risk assessment reveals that a wireless network in a hospital has a high likelihood of interference from medical devices. What risk treatment option involves accepting the risk without mitigation?

Risk avoidance
Risk transference
Risk mitigation
Risk acceptance (Correct answer)

Correct answer: Risk acceptance

Risk acceptance means acknowledging the risk and choosing to operate without implementing controls, often because the cost of mitigation exceeds the potential loss.

Question 14: Which combination of data sources provides the strongest evidence base for a comprehensive wireless capacity planning report?

Vendor capacity calculators alone
AP count and floor plan dimensions
Client density counts, per-client application bandwidth requirements, airtime utilization measurements, and RSSI coverage data (Correct answer)
End-user device count from the help desk ticketing system

Correct answer: Client density counts, per-client application bandwidth requirements, airtime utilization measurements, and RSSI coverage data

Combining client density, application bandwidth needs, airtime utilization, and RSSI data addresses all capacity planning dimensions with objective, measured inputs.

Question 15: Why is Signal-to-Noise Ratio (SNR) more meaningful than RSSI alone when evaluating WLAN performance?

SNR measures the AP's maximum output power in dBm
SNR indicates the difference between the signal and the noise floor, directly affecting achievable data rates (Correct answer)
SNR defines the channel width that the AP will use
SNR determines the number of APs required per floor

Correct answer: SNR indicates the difference between the signal and the noise floor, directly affecting achievable data rates

SNR measures how much stronger the desired signal is compared to ambient noise; a high SNR enables higher modulation rates and throughput, regardless of the absolute RSSI value.

Question 16: What is the noise floor in a wireless receiver typically expressed as?

dBi
Watts (positive value)
MHz
dBm (negative value) (Correct answer)

Correct answer: dBm (negative value)

The noise floor is the lowest detectable signal level, expressed as a negative dBm value representing thermal and system noise.

Question 17: Which tool is best suited for identifying non-802.11 RF interference sources such as microwave ovens or DECT phones during a site survey?

Network management system
Spectrum analyzer (Correct answer)
Wi-Fi protocol analyzer
Packet sniffer

Correct answer: Spectrum analyzer

A spectrum analyzer can detect and identify non-802.11 RF energy sources across a frequency range, which protocol analyzers cannot do since they only decode 802.11 frames.

Question 18: A CWNA candidate is reviewing threats to a wireless network. Which threat specifically exploits the 802.11 management frame vulnerability to disconnect legitimate clients?

PMKID attack
Kr00k attack
Deauthentication flood attack (Correct answer)
Eavesdropping attack

Correct answer: Deauthentication flood attack

A deauthentication flood attack sends spoofed management frames to force clients to disconnect, exploiting the lack of authentication in 802.11 management frames prior to 802.11w.

Question 19: What role does peer review play in Wireless Network Administrator practice?

It is only for beginners
It provides quality assurance and professional development through collegial evaluation (Correct answer)
It replaces formal certification
It creates unnecessary competition

Correct answer: It provides quality assurance and professional development through collegial evaluation

This is fundamental to Wireless Network Administrator practice. It provides quality assurance and professional development through collegial evaluation represents the professional standard for professional standards in the CWNA certification framework.

Question 20: What is the primary purpose of a predictive site survey?

To model WLAN coverage using floor plan software before deployment (Correct answer)
To measure actual RF coverage after AP deployment
To test client roaming between APs
To measure co-channel interference in a live network

Correct answer: To model WLAN coverage using floor plan software before deployment

Predictive surveys use specialized software to model expected RF coverage from proposed AP placements on a floor plan before any hardware is installed.

Question 21: Which encryption protocol replaced WEP as the mandatory security standard in Wi-Fi Protected Access (WPA)?

3DES
RC4
TKIP (Correct answer)
AES-CCMP

Correct answer: TKIP

WPA used TKIP (Temporal Key Integrity Protocol) as a stopgap replacement for WEP, running on existing hardware while providing stronger per-packet keying.

Question 22: Which antenna characteristic describes the angular range over which the antenna radiates at least half its maximum power?

Beamwidth (Correct answer)
Front-to-back ratio
Gain
Polarization

Correct answer: Beamwidth

Beamwidth is the angular measure of the antenna's radiation pattern at the -3 dB (half-power) points.

Question 23: What is the maximum number of non-overlapping channels in the 2.4 GHz band in the United States?

3 (Correct answer)
14
11
13

Correct answer: 3

In the US 2.4 GHz band, only channels 1, 6, and 11 are non-overlapping, providing just 3 interference-free channels.

Question 24: A WLAN administrator is asked to train help desk staff on basic wireless troubleshooting. Which training approach is MOST effective for this audience?

Use scenario-based walkthroughs covering the most common issues they encounter, with a quick-reference guide (Correct answer)
Teach RF propagation theory before any practical steps
Assign the full CWNA study guide as required reading
Schedule a single two-hour lecture with no hands-on component

Correct answer: Use scenario-based walkthroughs covering the most common issues they encounter, with a quick-reference guide

Scenario-based training with practical quick-reference materials gives help desk staff immediately applicable skills for their specific role.

Question 25: A company is planning outdoor 5 GHz Wi-Fi across a campus. Which band should they use to avoid mandatory DFS radar scanning overhead?

UNII-3 (5.725–5.850 GHz) (Correct answer)
UNII-2C (5.47–5.725 GHz)
UNII-1 (5.15–5.25 GHz)
UNII-2 (5.25–5.35 GHz)

Correct answer: UNII-3 (5.725–5.850 GHz)

UNII-3 does not require DFS, making it the preferred outdoor 5 GHz band where a 60-second CAC delay is undesirable.

Question 26: Which modulation scheme does 802.11ax support that 802.11ac does not, enabling higher throughput in favorable RF conditions?

1024-QAM (Correct answer)
512-QAM
256-QAM
64-QAM

Correct answer: 1024-QAM

802.11ax supports 1024-QAM, encoding 10 bits per symbol versus 8 bits with 256-QAM, providing up to 25% higher peak throughput in high-SNR conditions.

Question 27: How should CWNA professionals stay current with regulatory changes?

Regulations rarely change
Rely on colleagues for updates
Monitor regulatory updates, participate in professional associations, and attend continuing education (Correct answer)
Wait until audited

Correct answer: Monitor regulatory updates, participate in professional associations, and attend continuing education

This is fundamental to Wireless Network Administrator practice. Monitor regulatory updates, participate in professional associations, and attend continuing education represents the professional standard for regulatory in the CWNA certification framework.

Question 28: During a post-deployment review, users report that coverage in a stairwell is poor. The project sponsor was not informed of this limitation earlier. What should the administrator do?

Blame the original site survey vendor
Close the ticket because stairwells are out of scope by default
Proactively communicate the gap, explain the cause, and propose remediation options (Correct answer)
Add more APs without informing the sponsor

Correct answer: Proactively communicate the gap, explain the cause, and propose remediation options

Proactive, transparent communication about gaps and proposed solutions maintains stakeholder trust.

Question 29: What is 'throughput testing' in the context of a WLAN site survey?

Measuring signal strength with a handheld RSSI meter
Testing physical cable connections between APs and switches
Measuring actual data transfer rates at various locations throughout the facility (Correct answer)
Analyzing the total number of APs visible from each location

Correct answer: Measuring actual data transfer rates at various locations throughout the facility

Throughput testing measures real data transfer rates at various locations to verify that the WLAN meets the bandwidth requirements of the intended applications.

Question 30: What is a PD Class 0 device's maximum power consumption?

12.95 W (Correct answer)
6.49 W
3.84 W
15.4 W

Correct answer: 12.95 W

According to the IEEE 802.3af Power over Ethernet (PoE) standard, a Powered Device (PD) classified as Class 0 is designed to draw a maximum power of 12.95 watts. This classification helps Power Sourcing Equipment (PSE) manage and allocate power efficiently to connected devices on the network.

Question 31: Which EAP method uses TLS tunnels and does NOT require client-side digital certificates?

EAP-TLS
LEAP
PEAP (Correct answer)
EAP-FAST without PAC

Correct answer: PEAP

PEAP (Protected EAP) creates an encrypted TLS tunnel using only a server certificate, then authenticates the client with credentials inside the tunnel.

Question 32: In 802.11 WPA2-Enterprise deployments, which component authenticates user credentials and issues Access-Accept or Access-Reject responses?

RADIUS server (Authentication Server) (Correct answer)
Wireless LAN Controller (WLC)
Authenticator AP (NAS)
Certificate Authority (CA)

Correct answer: RADIUS server (Authentication Server)

The RADIUS server acts as the Authentication Server (AS), validating credentials presented during 802.1X/EAP exchanges and responding with Accept or Reject.

Question 33: How should CWNA professionals evaluate new technology tools?

Assess functionality, reliability, security, cost-effectiveness, and alignment with professional needs (Correct answer)
Avoid all new technology
Wait until competitors adopt first
Adopt all new technology immediately

Correct answer: Assess functionality, reliability, security, cost-effectiveness, and alignment with professional needs

This is fundamental to Wireless Network Administrator practice. Assess functionality, reliability, security, cost-effectiveness, and alignment with professional needs represents the professional standard for technology in the CWNA certification framework.

Question 34: Which 802.11 amendment defines fast BSS transition (fast roaming) to reduce handoff latency for voice applications?

802.11r (Correct answer)
802.11v
802.11u
802.11k

Correct answer: 802.11r

802.11r defines Fast BSS Transition (FT), pre-caching keys to speed up re-authentication during roaming handoffs.

Question 35: A wireless QA test reveals that roaming latency between APs exceeds 300 ms, disrupting VoIP calls. Which 802.11 amendment is specifically designed to reduce roaming latency?

802.11u (Interworking with External Networks)
802.11k (Radio Resource Management)
802.11v (BSS Transition Management)
802.11r (Fast BSS Transition) (Correct answer)

Correct answer: 802.11r (Fast BSS Transition)

802.11r pre-caches PMK key material between APs so clients can complete the four-way handshake faster during roaming, reducing handoff latency.

Question 36: A CWNA candidate reviews a wireless site survey report showing –75 dBm RSSI at the cell edge. Why is RSSI alone insufficient to determine link quality?

RSSI does not account for the noise floor, so SNR cannot be derived from it alone (Correct answer)
RSSI is only valid for 2.4 GHz measurements
RSSI cannot be measured by passive survey tools
RSSI values above –80 dBm always guarantee good throughput

Correct answer: RSSI does not account for the noise floor, so SNR cannot be derived from it alone

RSSI reflects received signal strength but not the noise floor; without knowing the noise floor, you cannot calculate SNR, which is the true indicator of link quality.

Question 37: In WPA2-Enterprise, which protocol framework is used to transport EAP messages between the supplicant and the authentication server?

RADIUS over HTTPS
TACACS+
LDAP
802.1X (Correct answer)

Correct answer: 802.1X

802.1X provides the port-based network access control framework that encapsulates EAP messages between the supplicant, authenticator, and authentication server.

Question 38: Which Wi-Fi generation introduced OFDMA to improve multi-user efficiency in dense environments?

Wi-Fi 4 (802.11n)
Wi-Fi 6 (802.11ax) (Correct answer)
Wi-Fi 6E (802.11ax-6GHz)
Wi-Fi 5 (802.11ac)

Correct answer: Wi-Fi 6 (802.11ax)

Wi-Fi 6 (802.11ax) introduced OFDMA, allowing multiple users to share a channel simultaneously by dividing it into resource units.

Question 39: A CWNA professional sends a post-site-survey report to a client. Which section is MOST important for non-technical stakeholders?

Raw RSSI heatmaps with dBm scales
Full list of AP MAC addresses discovered
Detailed 802.11 frame exchange analysis
Executive summary with findings, business impact, and recommended actions (Correct answer)

Correct answer: Executive summary with findings, business impact, and recommended actions

An executive summary translates technical findings into business-relevant language that non-technical stakeholders can act on.

Question 40: Which regulatory document defines how Wi-Fi equipment must be tested to verify compliance with FCC limits?

ETSI EN 301 893
KDB (Knowledge Database) publication procedures (Correct answer)
IEEE 802.11 specification annex
RFC published by the IETF

Correct answer: KDB (Knowledge Database) publication procedures

The FCC's Knowledge Database (KDB) provides detailed test procedures and Q&A guidance that equipment must follow to receive FCC authorization.

Question 41: When a CWNA professional delivers a post-deployment report, which element is MOST critical for the client's ongoing operations team?

Personal notes from the site visit
Vendor invoice copies
Marketing materials about the equipment
Channel plan, AP placement map, and configuration baseline (Correct answer)

Correct answer: Channel plan, AP placement map, and configuration baseline

The channel plan, AP placement map, and configuration baseline give the operations team the information needed to maintain, troubleshoot, and expand the network.

Question 42: In the context of CWNA, what is the primary role of the Distribution System (DS) in a wireless infrastructure network?

Connecting APs to each other and to the wired LAN backbone (Correct answer)
Distributing RF signals across antennas via cables
Distributing IP addresses to wireless clients via DHCP
Managing transmit power distribution across a WLAN controller

Correct answer: Connecting APs to each other and to the wired LAN backbone

The Distribution System (DS) is the wired or wireless medium that interconnects APs and connects the wireless network to the wired LAN infrastructure.

Question 43: Which CWNP certification is the recommended prerequisite or companion to the CWNA for professionals pursuing advanced wireless security knowledge?

CWSP (Correct answer)
CWAP
CWNE
CWDP

Correct answer: CWSP

The CWSP (Certified Wireless Security Professional) credential focuses specifically on wireless security and pairs naturally with the CWNA for professionals seeking security depth.

Question 44: Which WPA3 feature provides forward secrecy, protecting past session traffic even if the passphrase is later compromised?

Pre-Shared Key (PSK)
WEP-256
SAE (Simultaneous Authentication of Equals) (Correct answer)
TKIP

Correct answer: SAE (Simultaneous Authentication of Equals)

WPA3-Personal uses SAE, which generates unique session keys per connection, ensuring past sessions remain protected if the password is later revealed.

Question 45: Which site survey methodology involves associating with APs and actively measuring actual connection performance such as throughput and latency?

Noise floor survey
Passive survey
Active survey (Correct answer)
Predictive survey

Correct answer: Active survey

An active survey requires the survey client to associate with APs and exchange data, providing real-world throughput, latency, and connection quality measurements at each location.

Question 46: What is the primary purpose of regulatory compliance in Wireless Network Administrator practice?

To limit competition
To benefit regulators only
To create bureaucratic burden
To protect public safety, ensure quality standards, and maintain professional accountability (Correct answer)

Correct answer: To protect public safety, ensure quality standards, and maintain professional accountability

This is fundamental to Wireless Network Administrator practice. To protect public safety, ensure quality standards, and maintain professional accountability represents the professional standard for regulatory in the CWNA certification framework.

Question 47: What is the primary function of the RADIUS server in WPA2-Enterprise authentication?

Authenticate user credentials and return an accept or reject decision (Correct answer)
Assign IP addresses to wireless clients
Generate preshared keys for each client
Broadcast SSID beacons to clients

Correct answer: Authenticate user credentials and return an accept or reject decision

The RADIUS server acts as the Authentication, Authorization, and Accounting (AAA) server, verifying credentials and returning an Access-Accept or Access-Reject.

Question 48: What percentage of cell overlap is generally recommended between adjacent APs to support seamless roaming for data applications?

35-45%
15-20% (Correct answer)
5-10%
55-65%

Correct answer: 15-20%

A 15-20% cell overlap provides sufficient coverage continuity for clients to detect and initiate roaming to the next AP before the current signal becomes unusable.

Question 49: What is a 'deauthentication attack' in a wireless network?

Intercepting the DHCP handshake to steal an IP address
Jamming the RF channel with noise
Brute-forcing the WPA2 passphrase offline
Sending spoofed 802.11 deauthentication frames to disconnect clients (Correct answer)

Correct answer: Sending spoofed 802.11 deauthentication frames to disconnect clients

A deauthentication attack exploits the unprotected nature of 802.11 management frames to forcibly disconnect clients by sending spoofed deauth frames.

Question 50: What percentage of the first Fresnel zone should be kept clear of obstructions for optimal link performance?

60% (Correct answer)
80%
20%
40%

Correct answer: 60%

Industry best practice requires at least 60% of the first Fresnel zone to be clear of obstructions to avoid significant signal degradation.

Question 51: What technology allows a wireless AP to serve both uplink and downlink MU-MIMO simultaneously in 802.11ax?

TWT (Target Wake Time)
UL and DL MU-MIMO (Correct answer)
Trigger-Based Random Access (TBRA)
Spatial Stream Aggregation (SSA)

Correct answer: UL and DL MU-MIMO

802.11ax supports both uplink and downlink MU-MIMO, whereas 802.11ac only supported downlink MU-MIMO, improving uplink capacity in dense environments.

Question 52: During a post-deployment RF survey, an engineer finds that some areas show SNR values below 20 dB. What is the primary consequence of insufficient SNR in a WLAN?

Higher MCS rates are unavailable, reducing throughput (Correct answer)
Increased 802.11 management frame overhead
IP address exhaustion in DHCP pools
Increased authentication failures

Correct answer: Higher MCS rates are unavailable, reducing throughput

Low SNR forces clients to use lower MCS (Modulation and Coding Scheme) indices, which directly reduces maximum achievable throughput.

Question 53: An organization's legal team asks the WLAN administrator for records of all wireless clients that connected during a specific date range. What is the MOST appropriate action?

Delete the logs to protect user privacy
Email the raw RADIUS logs directly to the legal team without review
Provide the requested logs through the organization's official data request process and coordinate with legal counsel (Correct answer)
Deny the request because WLAN logs are confidential

Correct answer: Provide the requested logs through the organization's official data request process and coordinate with legal counsel

Legal data requests must follow formal organizational processes and be coordinated with legal counsel to ensure compliance and proper handling.

Question 54: Which security protocol introduced Simultaneous Authentication of Equals (SAE) to replace the Pre-Shared Key handshake?

802.1X/EAP-TLS
WPA2-Personal
WPA3-Personal (Correct answer)
OWE (Opportunistic Wireless Encryption)

Correct answer: WPA3-Personal

WPA3-Personal replaces the PSK 4-way handshake with SAE, a zero-knowledge proof that provides forward secrecy and resistance to offline dictionary attacks.

Question 55: A WLAN project stakeholder asks why the engineer chose 5 GHz channels instead of 2.4 GHz for the primary SSID. What level of detail is MOST appropriate for a non-technical stakeholder?

Say the choice was arbitrary
State that 5 GHz offers more non-overlapping channels and less interference, resulting in better performance for users (Correct answer)
Provide a 20-page RF engineering white paper
Explain OFDM subcarrier spacing and DSSS modulation differences in full detail

Correct answer: State that 5 GHz offers more non-overlapping channels and less interference, resulting in better performance for users

A concise explanation of the practical benefit satisfies a non-technical stakeholder without unnecessary complexity.

Question 56: How do continuing education requirements benefit CWNA certified professionals?

They are unnecessary formalities
They reduce practical skills
They ensure professionals stay current with evolving industry practices and knowledge (Correct answer)
They only benefit training providers

Correct answer: They ensure professionals stay current with evolving industry practices and knowledge

This is fundamental to Wireless Network Administrator practice. They ensure professionals stay current with evolving industry practices and knowledge represents the professional standard for professional standards in the CWNA certification framework.

Question 57: Which QoS access category (AC) should be used for voice traffic in WMM to achieve the lowest latency?

AC_VO (Voice) (Correct answer)
AC_BE (Best Effort)
AC_BK (Background)
AC_VI (Video)

Correct answer: AC_VO (Voice)

AC_VO has the shortest AIFS and smallest CWmin/CWmax values, giving voice traffic the highest probability of winning medium access quickly.

Question 58: Which tool provides the MOST detailed information about non-802.11 RF interference in a specific frequency band?

Protocol analyzer (packet sniffer)
Wi-Fi scanner application
Spectrum analyzer (Correct answer)
SNMP-based network management system

Correct answer: Spectrum analyzer

A spectrum analyzer displays raw RF energy across frequencies regardless of source, allowing identification of non-802.11 interferers that packet analyzers cannot decode.

Question 59: Which FCC rule part specifically governs unlicensed intentional radiators operating in the ISM bands?

Part 15 (Correct answer)
Part 90
Part 97
Part 22

Correct answer: Part 15

FCC Part 15 covers unlicensed intentional radiators, including Wi-Fi devices operating in ISM bands.

Question 60: What is the recommended minimum RSSI for supporting Voice over Wi-Fi (VoWiFi) applications?

-50 dBm
-67 dBm (Correct answer)
-85 dBm
-75 dBm

Correct answer: -67 dBm

Voice over Wi-Fi applications typically require a minimum RSSI of -67 dBm to maintain the consistent signal quality needed for real-time voice communications.

CWNA-109 Certified Wireless Network Administrator

The CWNA (Certified Wireless Network Administrator) certification validates foundational enterprise wireless networking knowledge including RF technologies, WLAN protocols and devices, network architecture and design, security, and regulatory standards. It is the entry-level Wi-Fi certification from CWNP.

Questions

90 min

Time Limit

70%

To Pass

Checking for saved progress...

Exam Rules

You can skip questions and return to them later
Flag questions for review before submitting
No feedback shown until you submit the entire exam
Unanswered questions count as wrong — answer everything
10 pretest questions are mixed in and don't affect your score
Timer auto-submits when time runs out
Your progress is auto-saved every 30 seconds