Certified Wireless Specialist (CWS-101) — Questions and Answers

Question 1: A client's security team requests a list of all SSIDs and their security configurations after deployment. You should:

Refer them to the equipment vendor
Provide only the public-facing SSID names
Decline since this is proprietary information
Provide a complete, documented network summary as part of standard handoff documentation (Correct answer)

Correct answer: Provide a complete, documented network summary as part of standard handoff documentation

Providing complete configuration documentation is a professional obligation and supports the client's ability to audit and manage their own security posture.

Question 2: A school wants to filter student internet access without purchasing additional hardware. Which feature on a business-grade AP achieves this?

MU-MIMO beamforming
Integrated URL/content filtering or DNS-based filtering on the controller (Correct answer)
WPA3 Enterprise mode
RADIUS server integration

Correct answer: Integrated URL/content filtering or DNS-based filtering on the controller

Many enterprise AP controllers include built-in content filtering or integrate with DNS filtering services to control internet access by client group.

Question 3: A CWS is designing a WLAN for a multi-tenant office building where tenants must be completely isolated from each other. Which combination of features achieves this?

Hiding the SSID for each tenant
Separate SSIDs per tenant with client isolation and dedicated VLANs routed to separate firewall zones (Correct answer)
WPA2-Personal with different passphrases per tenant on the same VLAN
A single SSID with MAC address filtering per tenant

Correct answer: Separate SSIDs per tenant with client isolation and dedicated VLANs routed to separate firewall zones

Per-tenant SSIDs with client isolation, VLAN segmentation, and separate firewall zones ensure complete Layer 2 and Layer 3 isolation between tenants.

Question 4: An organization implements geo-fencing to restrict wireless network access. Which risk does this control PRIMARILY mitigate?

Bandwidth overuse by internal users
Unauthorized access attempts from outside the defined geographic boundary (Correct answer)
Interference from neighboring wireless networks
RF signal leakage beyond the building perimeter

Correct answer: Unauthorized access attempts from outside the defined geographic boundary

Geo-fencing restricts network access based on physical location, preventing authentication or connectivity from devices outside the approved geographic area, reducing external threat exposure.

Question 5: Which 802.11 power-save mechanism does Wi-Fi 6 introduce to improve efficiency for IoT and battery-powered devices?

U-APSD (Unscheduled APSD)
TWT (Target Wake Time) (Correct answer)
WMM Power Save
Legacy PSM (Power Save Mode)

Correct answer: TWT (Target Wake Time)

TWT (Target Wake Time), introduced in 802.11ax, allows an AP to schedule specific wake times for clients, dramatically reducing power consumption.

Question 6: What is the purpose of an RF spectrum analyzer in WLAN troubleshooting?

To assign IP addresses to wireless clients
To configure SSID parameters on access points
To identify non-802.11 interference sources in the RF spectrum (Correct answer)
To measure throughput between two wireless clients

Correct answer: To identify non-802.11 interference sources in the RF spectrum

An RF spectrum analyzer detects and classifies non-802.11 RF sources such as microwave ovens, Bluetooth devices, and cordless phones that can cause interference.

Question 7: A client in a healthcare facility asks why you recommended WPA3-Enterprise over WPA2-Personal. What is the most accurate explanation?

WPA3-Enterprise provides stronger encryption and per-user authentication, meeting healthcare regulatory requirements better than shared-key WPA2-Personal (Correct answer)
WPA3 is chosen only for its backward compatibility
WPA2-Personal and WPA3-Enterprise offer the same security level
WPA3 is required only in educational environments

Correct answer: WPA3-Enterprise provides stronger encryption and per-user authentication, meeting healthcare regulatory requirements better than shared-key WPA2-Personal

Healthcare environments require individual accountability and strong encryption standards like WPA3-Enterprise to comply with HIPAA and similar regulations.

Question 8: A client asks about the difference between a wireless LAN controller (WLC) and cloud-managed Wi-Fi. Which explanation is most accurate?

A WLC is on-premises hardware managing APs, while cloud-managed Wi-Fi uses internet-based controllers (Correct answer)
Cloud-managed Wi-Fi requires no internet connection
There is no functional difference between the two
WLCs only work with 2.4 GHz radios

Correct answer: A WLC is on-premises hardware managing APs, while cloud-managed Wi-Fi uses internet-based controllers

On-premises WLCs manage APs locally, while cloud-managed systems rely on internet connectivity to a vendor's cloud platform for configuration and monitoring.

Question 9: Which of the following BEST describes the risk associated with using WPS PIN authentication on a wireless router?

WPS PIN disables WPA2 encryption temporarily
WPS PIN is vulnerable to online brute-force due to a design flaw splitting the PIN into two halves (Correct answer)
WPS PIN allows any device to bypass MAC filtering
WPS PIN exposes the SSID in plaintext during setup

Correct answer: WPS PIN is vulnerable to online brute-force due to a design flaw splitting the PIN into two halves

The WPS PIN has a design flaw where it is validated in two separate halves (4+3 digits), reducing the effective keyspace from 10^7 to about 11,000 combinations, making it trivially brute-forceable.

Question 10: A wireless client is experiencing intermittent disconnections during peak hours. What is the most likely cause?

AP overload due to too many associated clients or high channel utilization (Correct answer)
Incorrect subnet mask
Incorrect DNS server settings
DHCP pool exhaustion on IPv6

Correct answer: AP overload due to too many associated clients or high channel utilization

During peak hours, high client density and channel utilization can cause APs to drop or reject clients, leading to disconnections.

Question 11: What does a cell overlap of approximately 15–20% between adjacent APs achieve in a WLAN design?

Maximizes channel reuse
Reduces the number of APs needed
Ensures seamless roaming with consistent coverage (Correct answer)
Prevents clients from associating

Correct answer: Ensures seamless roaming with consistent coverage

A 15–20% cell overlap ensures clients can roam between APs without dropping the connection or experiencing coverage gaps.

Question 12: What does a firewall do in a WLAN?

Boosts signal
Monitors and restricts traffic (Correct answer)
Provides DHCP
Prevents overheating

Correct answer: Monitors and restricts traffic

In a Wireless Local Area Network (WLAN), a firewall serves as a critical security barrier that monitors and controls incoming and outgoing network traffic. It operates based on predefined security rules to permit or block specific data packets. This function protects the network from unauthorized access, malicious attacks, and ensures the integrity and confidentiality of data.

Question 13: Which modulation scheme offers the highest data rate in the 802.11ax (Wi-Fi 6) standard?

4096-QAM
256-QAM
1024-QAM (Correct answer)
64-QAM

Correct answer: 1024-QAM

Wi-Fi 6 (802.11ax) uses 1024-QAM as its highest modulation, encoding 10 bits per symbol for maximum throughput.

Question 14: You are designing a wireless network for an outdoor stadium seating 50,000 people. Which deployment strategy best addresses high user density?

Use a single high-power AP per section
Deploy directional sector antennas aimed at seating sections with small, controlled cells (Correct answer)
Deploy only 2.4 GHz for maximum range
Mount high-gain omnidirectional APs on the scoreboard

Correct answer: Deploy directional sector antennas aimed at seating sections with small, controlled cells

Directional antennas focused on seating sections create many small, low-interference cells, distributing client load across more APs and channels.

Question 15: During a site survey, a wireless specialist notices high co-channel interference on all 2.4 GHz channels. What is the best corrective action?

Add more APs on the same channel
Disable SSID broadcasting
Increase transmit power on all APs
Migrate affected devices to the 5 GHz band (Correct answer)

Correct answer: Migrate affected devices to the 5 GHz band

Migrating devices to the 5 GHz band reduces co-channel interference because 5 GHz has more non-overlapping channels.

Question 16: A network admin notices that an unknown AP with a familiar SSID appears in rogue AP reports. Users may be unknowingly connecting to it. What type of attack is this?

Deauthentication flood
Evil twin or honeypot AP attack (Correct answer)
WPS brute-force attack
TKIP downgrade attack

Correct answer: Evil twin or honeypot AP attack

An evil twin AP mimics a legitimate SSID to lure clients into connecting, enabling credential theft and man-in-the-middle attacks.

Question 17: Which type of wireless attack involves an adversary inserting themselves between a wireless client and AP to intercept and potentially modify traffic?

Deauthentication flooding
Beacon flooding
Wardriving reconnaissance
Man-in-the-Middle (MitM) attack (Correct answer)

Correct answer: Man-in-the-Middle (MitM) attack

A Man-in-the-Middle attack positions the attacker between the client and AP, allowing interception, eavesdropping, and potential modification of wireless communications.

Question 18: What is antenna diversity in a WLAN system?

Using multiple antennas and selecting the one receiving the strongest signal to improve reliability (Correct answer)
Installing antennas on multiple floors of a building
Deploying antennas manufactured by different vendors in the same network
Using antennas that operate on different frequency bands simultaneously

Correct answer: Using multiple antennas and selecting the one receiving the strongest signal to improve reliability

Antenna diversity uses two or more antennas at a receiver and dynamically selects the antenna with the best signal, reducing the effects of multipath fading.

Question 19: Which 802.11 frame type is captured during a passive site survey to determine AP presence and basic BSS parameters?

Block ACK frames
Data frames
ACK frames
Beacon frames (Correct answer)

Correct answer: Beacon frames

Beacon frames are broadcast by APs at regular intervals and contain SSID, supported rates, channel, and capability information used in passive surveys.

Question 20: A university library has thick concrete walls between floors and reports poor inter-floor coverage. What antenna type on APs is best suited for this scenario?

Yagi directional antenna
High-gain omnidirectional antenna
Rubber duck dipole antenna
Patch or ceiling-mount AP with downtilt to serve the floor below through penetration planning (Correct answer)

Correct answer: Patch or ceiling-mount AP with downtilt to serve the floor below through penetration planning

Ceiling-mount APs with downward radiation patterns, properly placed and accounted for floor attenuation, provide the best per-floor coverage in multi-story concrete buildings.

Question 21: Which document type created during site survey planning defines the maximum number of clients per AP?

Network topology diagram
IP address management (IPAM) spreadsheet
Capacity planning worksheet (Correct answer)
Firewall ruleset

Correct answer: Capacity planning worksheet

A capacity planning worksheet calculates client density, application requirements, and expected throughput to determine AP count and placement.

Question 22: Which 802.11 frame type is exploited in a deauthentication flood attack?

Beacon frames only
Management frames (Correct answer)
Data frames
Control frames (RTS/CTS)

Correct answer: Management frames

Deauthentication packets are 802.11 management frames, and because they were historically unprotected, attackers can spoof them to disconnect clients.

Question 23: What does a wireless LAN controller (WLC) do?

Manages multiple APs (Correct answer)
Routes internet
Enhances audio
Blocks malware

Correct answer: Manages multiple APs

A wireless LAN controller (WLC) centralizes the management, configuration, and security of multiple access points (APs) within a large wireless network. This allows network administrators to efficiently deploy, monitor, and troubleshoot the entire Wi-Fi infrastructure from a single point. WLCs are essential for scaling and maintaining robust enterprise wireless environments.

Question 24: When conducting an outdoor wireless site survey, which environmental factor is most likely to cause signal multipath?

Wind speed
Reflections off buildings, vehicles, and the ground (Correct answer)
UV radiation
High humidity

Correct answer: Reflections off buildings, vehicles, and the ground

Reflections from hard surfaces cause multipath propagation, where multiple signal copies arrive at the receiver at slightly different times.

Question 25: Which wireless security control specifically addresses the risk of unauthorized devices joining the network by validating hardware identity before association?

Channel bonding
Power level control
MAC address filtering (Correct answer)
SSID hiding

Correct answer: MAC address filtering

MAC address filtering validates the hardware address of devices before allowing network association, though it is considered a weak control since MAC addresses can be spoofed.

Question 26: What is the function of the 802.11k amendment?

Defines fast BSS transition for low-latency roaming
Enables radio resource measurement to assist client roaming decisions (Correct answer)
Specifies QoS mechanisms for voice and video
Provides mesh networking capabilities

Correct answer: Enables radio resource measurement to assist client roaming decisions

802.11k provides Radio Resource Management (RRM), allowing APs to share neighbor reports with clients so they can make better-informed roaming decisions.

Question 27: During a client discovery call, you should primarily aim to:

Understand the client's business requirements, pain points, and existing infrastructure (Correct answer)
Sell the most expensive solution immediately
Avoid asking questions to appear more knowledgeable
Focus only on the technical specifications of desired hardware

Correct answer: Understand the client's business requirements, pain points, and existing infrastructure

Discovery calls establish the foundation for a solution that addresses actual business needs rather than assumed technical requirements.

Question 28: What is the significance of the Fresnel zone in wireless network planning?

It describes the encryption zone around an AP
It defines the IP address range for wireless clients
It is the elliptical area around the line of sight that should be kept clear for optimal signal propagation (Correct answer)
It is the area covered by a single SSID

Correct answer: It is the elliptical area around the line of sight that should be kept clear for optimal signal propagation

Obstructions within the Fresnel zone cause signal diffraction and attenuation, so keeping at least 60% clear is critical for optimal links.

Question 29: What is the advantage of conducting a predictive site survey using software tools before a physical survey?

It certifies the network for FCC compliance
It eliminates the need for physical hardware entirely
It automatically configures all APs
It provides an estimated RF model to guide AP placement, saving time and cost (Correct answer)

Correct answer: It provides an estimated RF model to guide AP placement, saving time and cost

Predictive surveys use RF modeling software to simulate coverage, helping planners identify AP counts and positions before on-site work.

Question 30: Which protocol is used by WPA3-Personal to replace the PSK handshake and provide forward secrecy?

SAE (Simultaneous Authentication of Equals) (Correct answer)
TKIP
EAP-TLS
CCMP-256

Correct answer: SAE (Simultaneous Authentication of Equals)

WPA3-Personal replaces the 4-way handshake PSK exchange with SAE (Dragonfly handshake), which provides perfect forward secrecy and resistance to offline dictionary attacks.

Question 31: Which piece of software allows a WLAN administrator to capture and decode 802.11 management, control, and data frames for deep-dive analysis?

Cloud controller dashboard
Wireless packet analyzer (e.g., Wireshark with a WLAN adapter in monitor mode) (Correct answer)
PoE management utility
RF spectrum analyzer

Correct answer: Wireless packet analyzer (e.g., Wireshark with a WLAN adapter in monitor mode)

A wireless packet analyzer like Wireshark, paired with a WLAN adapter in monitor mode, captures raw 802.11 frames for protocol-level analysis of authentication, association, and data exchange.

Question 32: How should Certified Wireless Specialist professionals handle disagreements with stakeholders?

Prioritize being right over being constructive
Immediately escalate to management
Avoid all confrontation
Address issues professionally through active listening and seeking collaborative resolution (Correct answer)

Correct answer: Address issues professionally through active listening and seeking collaborative resolution

Professional conflict resolution in Certified Wireless Specialist practice involves active listening, understanding perspectives, and working toward mutually acceptable solutions.

Question 33: How should an CWS professional approach a novel situation not covered by standard procedures?

Apply foundational principles, assess risks, consult resources, and document decisions (Correct answer)
Refuse to proceed under any circumstances
Follow the closest existing procedure exactly
Improvise without any documentation

Correct answer: Apply foundational principles, assess risks, consult resources, and document decisions

Novel situations require applying core principles, careful risk assessment, resource consultation, and thorough documentation of the rationale for decisions made.

Question 34: Which wireless topology allows devices to communicate directly with each other without an access point?

Mesh BSS
Independent BSS (IBSS) (Correct answer)
Extended Service Set
Infrastructure BSS

Correct answer: Independent BSS (IBSS)

An IBSS (Independent Basic Service Set), also called ad hoc mode, lets devices communicate peer-to-peer without an AP.

Question 35: Which WPA3 feature provides forward secrecy, meaning past session traffic cannot be decrypted even if the PSK is later compromised?

802.11r fast BSS transition
TKIP counter mode
SAE (Simultaneous Authentication of Equals) (Correct answer)
WEP IV rotation

Correct answer: SAE (Simultaneous Authentication of Equals)

SAE (Dragonfly handshake) in WPA3-Personal generates unique session keys, ensuring that compromising the PSK does not expose previously recorded sessions.

Question 36: Which is a common wireless security risk?

Setting complex passwords
Using VPN
Open network with no encryption (Correct answer)
Using WPA3

Correct answer: Open network with no encryption

An open wireless network with no encryption is a significant security risk because all data transmitted over it is completely unprotected. Anyone within range can easily intercept and read sensitive information, such as passwords, personal data, or financial details. This lack of security makes the network highly vulnerable to eavesdropping and unauthorized access.

Question 37: Which factor most affects signal range indoors?

Lighting
Color of paint
Wall materials (Correct answer)
Air temperature

Correct answer: Wall materials

Different wall materials have varying densities and compositions, which significantly impact how much they absorb or reflect radio frequency signals. Dense materials like concrete or brick cause greater signal attenuation compared to lighter materials like drywall or wood. This absorption directly reduces the effective range and strength of a wireless signal indoors.

Question 38: A client says their wireless network 'feels slow' but cannot provide specifics. What is the best first step?

Blame the ISP connection
Run a speed test and present raw numbers without context
Immediately replace all access points
Ask the client to describe specific scenarios where slowness occurs (Correct answer)

Correct answer: Ask the client to describe specific scenarios where slowness occurs

Gathering specific use-case details helps pinpoint whether the issue is coverage, capacity, interference, or WAN-related.

Question 39: What is the role of QoS (Quality of Service) in a wireless network?

To manage VLAN tagging on wired uplinks only
To encrypt wireless traffic
To prioritize certain traffic types (e.g., VoIP, video) to reduce latency and jitter (Correct answer)
To assign static IP addresses to clients

Correct answer: To prioritize certain traffic types (e.g., VoIP, video) to reduce latency and jitter

QoS classifies and prioritizes traffic so time-sensitive applications like VoIP and video conferencing get preferential treatment over bulk data.

Question 40: A client complains that a particular area has intermittent connectivity despite showing full signal bars. What should you explain?

Full signal bars always guarantee connectivity
Intermittent issues cannot be diagnosed
The problem must be the client's devices
Signal strength and throughput are different; interference or channel congestion can cause issues even with strong signal (Correct answer)

Correct answer: Signal strength and throughput are different; interference or channel congestion can cause issues even with strong signal

RSSI indicates received signal strength, but SNR, channel utilization, and interference also heavily affect actual connectivity quality.

Question 41: What polarization orientation do most indoor WLAN access point antennas use by default?

Horizontal polarization
Circular polarization
Vertical polarization (Correct answer)
Cross polarization

Correct answer: Vertical polarization

Most indoor WLAN access point antennas use vertical polarization because the antennas are typically mounted upright and vertical polarization minimizes ground reflection losses.

Question 42: What is the purpose of a wireless access point?

To block devices
To increase internet speed
To enable wireless connectivity (Correct answer)
To manage email servers

Correct answer: To enable wireless connectivity

A wireless access point (WAP) is a networking hardware device that allows Wi-Fi compliant devices to connect to a wired network. It acts as a central hub for wireless devices, enabling them to communicate with each other and access the internet without physical cables.

Question 43: Which 802.11 feature allows an AP to dynamically switch channels to avoid radar interference in the 5 GHz band?

BSS Coloring
MU-MIMO
DFS (Dynamic Frequency Selection) (Correct answer)
TPC (Transmit Power Control)

Correct answer: DFS (Dynamic Frequency Selection)

DFS enables APs to detect radar systems and automatically move to a different channel to avoid interference, as required by FCC/ETSI regulations.

Question 44: Which process improvement principle emphasizes eliminating waste and creating more value with fewer resources?

Waterfall methodology
PERT analysis
Critical path method
Lean manufacturing (Correct answer)

Correct answer: Lean manufacturing

Lean focuses on identifying and eliminating non-value-adding activities (waste) to improve efficiency and quality.

Question 45: What happens to RF signal propagation when antenna polarization between transmitter and receiver is mismatched by 90 degrees?

Polarization mismatch loss of approximately 20 dB or more occurs (Correct answer)
Path loss is reduced
Only frequency changes
Signal gain increases by 3 dB

Correct answer: Polarization mismatch loss of approximately 20 dB or more occurs

A 90-degree polarization mismatch between transmit and receive antennas causes severe polarization isolation loss, typically 20 dB or greater.

Question 46: What does the dBi unit measure when describing antenna gain?

Decibel loss over 1 meter of cable
Signal strength in milliwatts
Gain relative to a half-wave dipole antenna
Gain relative to an isotropic radiator (Correct answer)

Correct answer: Gain relative to an isotropic radiator

dBi expresses antenna gain relative to a theoretical isotropic radiator that radiates equally in all directions.

Question 47: In the context of 802.11 networks, what does the term 'BSS' stand for?

Broadband Signal Strength
Beacon Synchronization System
Bandwidth Sharing Standard
Basic Service Set (Correct answer)

Correct answer: Basic Service Set

BSS (Basic Service Set) is the fundamental building block of an 802.11 WLAN, consisting of an AP and its associated client stations.

Question 48: A warehouse deploys 802.11ac APs but forklifts with metal frames cause intermittent connectivity. What RF phenomenon is most responsible?

Multipath interference caused by metal reflections (Correct answer)
Doppler shift
Free-space path loss
Refraction

Correct answer: Multipath interference caused by metal reflections

Metal surfaces reflect RF signals, creating multiple signal paths that arrive at the receiver at different times, causing multipath interference.

Question 49: What does SSID stand for?

Service Set Identifier (Correct answer)
Signal Security Interface Device
Secure Signal Identifier
System Server Internet Designator

Correct answer: Service Set Identifier

SSID stands for Service Set Identifier. It is the name of a Wi-Fi network that users see when they search for available networks. It acts as a unique identifier for a wireless local area network (WLAN).

Question 50: What is the primary value of case analysis in Certified Wireless Specialist professional development?

Replacing all hands-on practical experience
Learning exclusively from documented failures
Memorizing specific outcomes for replication
Developing critical thinking by applying theory to realistic scenarios (Correct answer)

Correct answer: Developing critical thinking by applying theory to realistic scenarios

Case analysis develops critical thinking skills by challenging professionals to apply theoretical knowledge to realistic, complex scenarios.

Question 51: Which security vulnerability does the KRACK (Key Reinstallation Attack) exploit in WPA2?

Nonce reuse caused by replaying handshake messages (Correct answer)
Forged EAPOL-Start frames to disrupt authentication
Weak passphrase brute-force during the 4-way handshake
IV collision in TKIP encryption

Correct answer: Nonce reuse caused by replaying handshake messages

KRACK exploits the WPA2 4-way handshake by forcing nonce reuse through handshake message replay, allowing decryption of encrypted traffic.

Question 52: Which method is commonly used for root cause analysis in CWS quality management?

Blaming the most recent change
Random brainstorming only
Customer complaint counting
The Five Whys technique or fishbone diagram for systematic investigation (Correct answer)

Correct answer: The Five Whys technique or fishbone diagram for systematic investigation

Structured root cause analysis methods like Five Whys and fishbone diagrams systematically trace problems to their fundamental causes rather than symptoms.

Question 53: What is the term for overlapping signals causing disruption?

Noise
Power surge
White noise
Co-channel interference (Correct answer)

Correct answer: Co-channel interference

Co-channel interference occurs when two or more wireless devices or access points operate on the same frequency channel within close proximity, causing their signals to overlap and disrupt each other. This interference leads to reduced data rates, dropped connections, and overall poor network performance. Proper channel planning is essential to mitigate this issue.

Question 54: What is the effective data rate impact when a 802.11n client connects using a 40 MHz channel compared to a 20 MHz channel under ideal conditions?

Approximately double the throughput (Correct answer)
10% increase
4x the throughput
No change; only range improves

Correct answer: Approximately double the throughput

Doubling the channel width from 20 MHz to 40 MHz approximately doubles the available data rate by fitting twice as many subcarriers.

Question 55: When a 2.4 GHz signal passes through a human body, approximately how much attenuation should be expected?

10–15 dB
3–5 dB (Correct answer)
0–1 dB
30+ dB

Correct answer: 3–5 dB

The human body causes roughly 3–5 dB of RF attenuation at 2.4 GHz due to the water content absorbing microwave-frequency energy.

Question 56: A quality assurance review finds that cable runs to several APs exceed the 100-meter Ethernet limit. The RECOMMENDED corrective action is:

Switch to Wi-Fi mesh backhaul on those APs
Increase AP transmit power to compensate
File a waiver and document the deviation
Install a PoE extender or fiber with a media converter at the midpoint (Correct answer)

Correct answer: Install a PoE extender or fiber with a media converter at the midpoint

A PoE extender or fiber run with a media converter maintains signal integrity and PoE delivery beyond the 100-meter copper limit.

Question 57: Which 802.11 feature, when enabled, helps reduce co-channel interference by preventing nearby APs from transmitting simultaneously?

CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) (Correct answer)
Band steering
MIMO spatial multiplexing
Dynamic Frequency Selection (DFS)

Correct answer: CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)

CSMA/CA is the core medium access mechanism that has devices listen before transmitting to reduce collisions on shared channels.

Question 58: A wireless engineer notices a 20 dB signal attenuation after a coaxial cable run. If the transmitter outputs 30 dBm, what is the power at the antenna connector?

50 dBm
1.5 dBm
10 dBm (Correct answer)
-10 dBm

Correct answer: 10 dBm

Power at the antenna connector = transmit power - cable loss = 30 dBm - 20 dB = 10 dBm.

Question 59: How should an CWS professional respond to discovering a compliance violation?

Blame the regulatory framework for being unclear
Report promptly, investigate root cause, and implement corrective actions (Correct answer)
Conceal it if the impact is minor
Wait for external auditors to identify it

Correct answer: Report promptly, investigate root cause, and implement corrective actions

Professional responsibility requires prompt reporting, thorough investigation, and corrective action when compliance violations are discovered, regardless of severity.

Question 60: For evidence-based capacity planning in a 300-seat conference center with dense Wi-Fi 6 deployment, which input data is MOST critical to validate design adequacy?

Expected simultaneous active sessions, application bandwidth requirements per user, and measured channel utilization under simulated load (Correct answer)
Vendor-supplied maximum client capacity per AP
Building square footage divided by recommended AP coverage radius
Number of SSIDs configured per AP

Correct answer: Expected simultaneous active sessions, application bandwidth requirements per user, and measured channel utilization under simulated load

Accurate capacity planning requires modeling real application demand per user and validating with load testing, not relying on vendor maximum client counts alone.

Certified Wireless Specialist (CWS-101)

The CWS certification validates entry-level knowledge of 802.11 wireless networking fundamentals, RF characteristics, wireless hardware and software, and organizational Wi-Fi use cases. It is a CWNP foundational certification for IT professionals, sales, and support roles.

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