CWT-101 Certified Wireless Technician — Questions and Answers
Question 1: What is the primary purpose of conducting a wireless site survey before deploying a WLAN?
- To configure SSID names before installation
- To purchase the correct number of access points
- To register the network with the FCC
- To identify RF coverage, interference, and optimal AP placement (Correct answer)
Correct answer: To identify RF coverage, interference, and optimal AP placement
A site survey identifies RF coverage gaps, interference sources, and optimal access point placement to ensure reliable wireless connectivity.
Question 2: A directional Yagi antenna is BEST suited for which deployment scenario?
- Replacing omnidirectional antennas inside conference rooms
- Providing even coverage throughout a large open warehouse
- Creating a point-to-point outdoor wireless bridge between two buildings (Correct answer)
- Connecting multiple clients from a central indoor location
Correct answer: Creating a point-to-point outdoor wireless bridge between two buildings
Yagi antennas concentrate RF energy in a narrow beam, making them ideal for point-to-point links where maximizing gain in one direction is critical.
Question 3: What is the primary purpose of a PoE splitter?
- To convert PoE to wireless charging for mobile devices
- To increase PoE output beyond the rated standard wattage
- To split one PoE port into multiple non-PoE data ports
- To separate power from data so non-PoE devices can use PoE infrastructure (Correct answer)
Correct answer: To separate power from data so non-PoE devices can use PoE infrastructure
A PoE splitter separates the DC power from the data signal on an Ethernet cable, providing a standard data port and a separate DC power connector for non-PoE-capable devices.
Question 4: Which tool is specifically designed to detect non-Wi-Fi interference sources such as microwave ovens and Bluetooth devices during a site survey?
- Protocol analyzer
- Spectrum analyzer (Correct answer)
- Cable tester
- Wi-Fi analyzer app
Correct answer: Spectrum analyzer
A spectrum analyzer sweeps across radio frequencies to display all RF energy, including non-Wi-Fi sources that protocol analyzers cannot detect.
Question 5: Which tool can assess overall Wi-Fi network health?
- Network monitoring software (Correct answer)
- Router manual
- Word processor
- Web browser
Correct answer: Network monitoring software
Network monitoring software is an essential tool for assessing the overall health and performance of a Wi-Fi network. It can track various metrics such as signal strength, channel utilization, connected clients, data throughput, and error rates. By providing real-time data and historical trends, this software helps identify bottlenecks, troubleshoot issues, and optimize network configurations for better efficiency and reliability.
Question 6: What is the FIRST step before operating any equipment in CWT practice?
- Begin operation to test it
- Conduct a pre-operation inspection and verify safety systems (Correct answer)
- Read the manual only if issues occur
- Ask a colleague if it seems okay
Correct answer: Conduct a pre-operation inspection and verify safety systems
Pre-operation inspection ensures visible damage is checked and safety systems verified.
Question 7: What is the difference between active and passive scanning by a wireless client?
- Active scanning only works on 5 GHz; passive only works on 2.4 GHz
- Active scanning transmits probe requests on each channel; passive scanning listens for beacon frames (Correct answer)
- There is no functional difference in the scan results
- Passive scanning is faster than active scanning
Correct answer: Active scanning transmits probe requests on each channel; passive scanning listens for beacon frames
In active scanning, clients broadcast probe requests and wait for probe responses, while passive scanning simply listens for AP beacon frames without transmitting.
Question 8: What is TSPEC (Traffic Specification) in the context of 802.11e QoS and how is it used?
- A physical layer speed negotiation between client and AP
- A vendor-specific extension used only by Cisco access points
- A client-initiated request that reserves bandwidth and QoS parameters with the AP for a specific traffic stream (Correct answer)
- A method of defining SSID policies in a wireless controller
Correct answer: A client-initiated request that reserves bandwidth and QoS parameters with the AP for a specific traffic stream
TSPEC is part of 802.11e admission control, allowing clients to request a specific amount of bandwidth with defined QoS parameters from the AP before initiating a real-time stream.
Question 9: An enterprise WLAN uses 802.1X. A client presents credentials to the AP, which forwards them to an authentication server. What role does the AP play in this architecture?
- Supplicant
- Authentication Server
- RADIUS proxy
- Authenticator (Correct answer)
Correct answer: Authenticator
In 802.1X, the AP acts as the Authenticator, relaying EAP messages between the supplicant (client) and authentication server.
Question 10: What does the 'perpetual PoE' feature on enterprise switches provide?
- Uninterrupted PoE power to ports during a switch reboot or firmware upgrade (Correct answer)
- PoE delivery extended beyond 100 meters via inline repeaters
- A redundant second power supply dedicated to PoE ports
- PoE power automatically scales with cable length
Correct answer: Uninterrupted PoE power to ports during a switch reboot or firmware upgrade
Perpetual PoE maintains power to connected PDs such as access points and IP phones even while the switch is reloading or upgrading firmware, preventing unnecessary downtime.
Question 11: How does a PoE Power Sourcing Equipment (PSE) detect a valid Powered Device (PD) before applying full power?
- It uses DHCP to query the device type
- It sends a high-voltage pulse to stress-test the cable
- It applies a low-voltage DC signature detection signal (Correct answer)
- It requires manual port configuration by the administrator
Correct answer: It applies a low-voltage DC signature detection signal
A PSE applies a low-voltage DC detection signal to identify the characteristic resistive signature (approximately 25kΩ) of a valid PD before committing full power.
Question 12: What documentation is MOST critical to maintain for safety compliance in the Certified Wireless Technician field?
- Employee vacation schedules
- Annual revenue reports
- Client marketing preferences
- Incident reports, training records, and inspection logs (Correct answer)
Correct answer: Incident reports, training records, and inspection logs
Incident reports, training records, and inspection logs are essential safety documentation for demonstrating compliance.
Question 13: When conducting a risk assessment for CWT operations, which factor should receive the HIGHEST priority?
- Convenience for daily operations
- Time required for safety training
- Cost of implementing safety measures
- Probability and severity of potential harm (Correct answer)
Correct answer: Probability and severity of potential harm
The probability and severity of potential harm are the primary factors in risk assessment.
Question 14: Which value represents the minimum acceptable SNR for a voice-grade WLAN deployment?
- 40 dB
- 15 dB
- 10 dB
- 25 dB (Correct answer)
Correct answer: 25 dB
A minimum SNR of 25 dB is generally recommended for voice applications to ensure low latency and packet loss.
Question 15: What does VSWR (Voltage Standing Wave Ratio) indicate in an antenna system?
- The polarization of the antenna
- The frequency range of the antenna
- The amount of RF power reflected due to impedance mismatch (Correct answer)
- The antenna's operating temperature range
Correct answer: The amount of RF power reflected due to impedance mismatch
VSWR measures the ratio of reflected to forward power caused by impedance mismatch between the antenna and transmission line, with 1:1 being ideal.
Question 16: What is the primary security risk associated with using open (unauthenticated) Wi-Fi networks?
- Channel saturation from beacon floods
- IP address exhaustion from DHCP abuse
- Rogue DHCP server injection
- Eavesdropping due to unencrypted over-the-air transmissions (Correct answer)
Correct answer: Eavesdropping due to unencrypted over-the-air transmissions
Open networks transmit data without encryption, allowing any nearby device in promiscuous mode to capture and read the traffic.
Question 17: What is the guard interval in OFDM, and why is it used?
- A time gap between symbols to prevent intersymbol interference from multipath (Correct answer)
- A cyclic prefix that enables synchronization only
- A power reduction period between transmissions
- A frequency gap between subcarriers to prevent overlap
Correct answer: A time gap between symbols to prevent intersymbol interference from multipath
The guard interval is a brief silent period inserted between OFDM symbols to allow multipath echoes to die out before the next symbol is received, preventing ISI.
Question 18: How can you test network connectivity issues?
- Turning off the firewall
- Running a ping command (Correct answer)
- Using a proxy
- Enabling airplane mode
Correct answer: Running a ping command
Running a ping command is a fundamental diagnostic tool for testing network connectivity. It sends small data packets to a target IP address and measures the response time, indicating if the device is reachable and the latency of the connection. This helps confirm basic network path functionality and identify if a device is online.
Question 19: Which Wi-Fi Alliance certification program replaced WPA2 and introduced SAE (Simultaneous Authentication of Equals)?
- Wi-Fi CERTIFIED n
- Wi-Fi 6E
- WPA-Enterprise
- WPA3 (Correct answer)
Correct answer: WPA3
WPA3 replaced WPA2 and introduced SAE, which provides stronger password-based authentication and forward secrecy.
Question 20: What is the maximum number of spatial streams supported by 802.11ac Wave 2?
- 4
- 2
- 16
- 8 (Correct answer)
Correct answer: 8
802.11ac Wave 2 supports up to 8 spatial streams using MU-MIMO, allowing simultaneous transmission to multiple clients.
Question 21: In Certified Wireless Technician, what is the PRIMARY purpose of conducting regular safety drills and exercises?
- To evaluate employee performance reviews
- To satisfy insurance requirements only
- To reduce daily workload
- To ensure personnel can respond effectively in emergencies (Correct answer)
Correct answer: To ensure personnel can respond effectively in emergencies
Regular safety drills ensure that all personnel are prepared to respond effectively during actual emergencies.
Question 22: A wireless survey shows high co-channel interference on channel 6. Which optimization technique directly addresses this?
- Enabling WMM admission control
- Switching to WPA3
- Reducing transmit power on overlapping APs (Correct answer)
- Enabling 802.11r fast BSS transition
Correct answer: Reducing transmit power on overlapping APs
Lowering transmit power reduces the RF footprint of each AP, shrinking the co-channel interference zone.
Question 23: Which protocol does WPA3-Enterprise mandate for protecting management frames to comply with its enhanced security requirements?
- 802.11v (BSS Transition Management)
- 802.11r (Fast BSS Transition)
- 802.11w (Protected Management Frames) (Correct answer)
- 802.11k (Neighbor Reports)
Correct answer: 802.11w (Protected Management Frames)
WPA3-Enterprise mandates 802.11w PMF to protect deauthentication and disassociation frames from spoofing attacks.
Question 24: Which attack exploits the WPS PIN authentication mechanism to gain unauthorized access to a WPA2 network?
- Deauthentication flood
- Pixie Dust / Brute-force WPS PIN attack (Correct answer)
- Evil Twin attack
- KRACK attack
Correct answer: Pixie Dust / Brute-force WPS PIN attack
The WPS PIN can be brute-forced in ~11,000 attempts due to its split-PIN design flaw; the Pixie Dust attack exploits weak nonce generation.
Question 25: Which statement BEST describes the relationship between Certified Wireless Technician certification and industry evolution?
- Requirements evolve periodically to reflect advances in knowledge and practice (Correct answer)
- Changes only occur when government mandates them
- Certification requirements never change
- Requirements become less stringent over time
Correct answer: Requirements evolve periodically to reflect advances in knowledge and practice
Certification requirements evolve to keep pace with professional and technological advances.
Question 26: Which personal protective equipment (PPE) principle applies to ALL CWT certified professionals regardless of their specific role?
- PPE must be properly fitted, maintained, and replaced as needed (Correct answer)
- PPE is only necessary during formal inspections
- Any PPE will provide adequate protection
- PPE is optional if experienced in the field
Correct answer: PPE must be properly fitted, maintained, and replaced as needed
Regardless of experience level, PPE must be properly fitted, regularly maintained, and replaced when worn or damaged.
Question 27: Which personal protective equipment (PPE) principle applies to ALL CWT certified professionals regardless of their specific role?
- Any PPE will provide adequate protection
- PPE is optional if experienced in the field
- PPE is only necessary during formal inspections
- PPE must be properly fitted, maintained, and replaced as needed (Correct answer)
Correct answer: PPE must be properly fitted, maintained, and replaced as needed
Regardless of experience level, PPE must be properly fitted, regularly maintained, and replaced when worn or damaged.
Question 28: In OFDM, what is the role of subcarriers?
- They provide redundancy by transmitting the same data multiple times
- They separate spatial streams in MU-MIMO
- They provide frequency hopping to avoid interference
- They carry independent data streams in parallel across narrow sub-channels within a wide channel (Correct answer)
Correct answer: They carry independent data streams in parallel across narrow sub-channels within a wide channel
OFDM divides a wide channel into many narrow orthogonal subcarriers that carry data in parallel, improving spectral efficiency and robustness against multipath interference.
Question 29: In Certified Wireless Technician practice, what is the FIRST step when a safety hazard is identified in the workplace?
- Continue working and report at end of shift
- Immediately secure the area and report the hazard (Correct answer)
- Wait for a supervisor to notice the issue
- Document it for the next safety audit
Correct answer: Immediately secure the area and report the hazard
When a safety hazard is identified, the immediate priority is to secure the area to prevent injury and report the hazard through proper channels.
Question 30: How does the CWT body of knowledge relate to daily professional practice?
- It is only for academic research
- It only applies during exams
- It provides the foundational framework guiding decision-making and standard practices (Correct answer)
- It is theoretical with limited application
Correct answer: It provides the foundational framework guiding decision-making and standard practices
The body of knowledge provides the framework guiding daily decision-making and practices.
Question 31: Which foundational principle is MOST important for success in Certified Wireless Technician?
- Maintaining minimum certification requirements
- Specializing in only one narrow area
- Commitment to continuous learning, ethical practice, and quality outcomes (Correct answer)
- Maximizing financial returns
Correct answer: Commitment to continuous learning, ethical practice, and quality outcomes
Success requires continuous learning, ethical practice, and focus on quality outcomes.
Question 32: Which polarization configuration is typically used for indoor omnidirectional ceiling-mount access points?
- Vertical polarization (Correct answer)
- Cross-polarization diversity
- Horizontal polarization
- Circular polarization
Correct answer: Vertical polarization
Indoor ceiling-mount APs typically use vertically polarized omnidirectional antennas, which align with the vertical orientation of most client device antennas.
Question 33: BSS Coloring, introduced in 802.11ax, primarily helps with which issue?
- Assigning IP addresses to clients more efficiently
- Coloring channel maps to identify DFS radar events
- Reducing co-channel interference in dense deployments by allowing concurrent transmissions from different BSSs (Correct answer)
- Encoding spatial streams with unique identifiers
Correct answer: Reducing co-channel interference in dense deployments by allowing concurrent transmissions from different BSSs
BSS Coloring adds a color identifier to frames so devices can distinguish between their own BSS and neighboring BSSs, allowing them to ignore foreign BSS transmissions and reduce unnecessary deferrals.
Question 34: What is multipath propagation and what problem can it cause in wireless networks?
- Using multiple antennas to boost signal strength
- A technique for transmitting on multiple frequencies simultaneously
- RF signals arriving at a receiver via multiple reflected paths, potentially causing interference or fading (Correct answer)
- The use of multiple SSIDs on a single access point
Correct answer: RF signals arriving at a receiver via multiple reflected paths, potentially causing interference or fading
Multipath propagation occurs when reflected RF copies of a signal arrive at slightly different times, which can cause destructive interference and signal fading.
Question 35: What is the MOST effective way for new CWT professionals to build competency?
- Combining formal education, mentored practice, and ongoing professional development (Correct answer)
- Learning through trial and error
- Studying certification materials exclusively
- Focusing solely on advanced topics
Correct answer: Combining formal education, mentored practice, and ongoing professional development
Building competency requires formal education, mentored practice, and ongoing development.
Question 36: In Certified Wireless Technician, what is the PRIMARY purpose of conducting regular safety drills and exercises?
- To evaluate employee performance reviews
- To reduce daily workload
- To ensure personnel can respond effectively in emergencies (Correct answer)
- To satisfy insurance requirements only
Correct answer: To ensure personnel can respond effectively in emergencies
Regular safety drills ensure that all personnel are prepared to respond effectively during actual emergencies.
Question 37: Why is channel selection important in WLAN setup?
- It affects cable speed.
- It reduces wireless interference (Correct answer)
- It lowers hardware cost.
- It adds encryption.
Correct answer: It reduces wireless interference
Proper channel selection is critical in WLAN setup to minimize interference from other Wi-Fi networks and devices operating on the same or overlapping frequencies. By choosing non-overlapping channels, especially in the crowded 2.4 GHz band, network performance can be significantly improved. This reduces signal collisions, leading to more stable connections and higher data throughput for users.
Question 38: Which QoS access category provides the highest priority for time-sensitive traffic like VoIP?
- AC_BE (Best Effort)
- AC_VO (Voice) (Correct answer)
- AC_BK (Background)
- AC_VI (Video)
Correct answer: AC_VO (Voice)
AC_VO has the shortest AIFSN and TXOP values, giving voice traffic the lowest contention window and fastest channel access.
Question 39: What is the function of an antenna in wireless communication?
- Generates encryption keys.
- Converts signals between electrical and electromagnetic forms (Correct answer)
- Increases data storage.
- Performs error correction.
Correct answer: Converts signals between electrical and electromagnetic forms
The fundamental function of an antenna in wireless communication is to act as a transducer, converting signals between electrical and electromagnetic forms. When transmitting, the antenna radiates the electrical energy from the device as radio waves into the air. Conversely, when receiving, it captures electromagnetic waves from the air and converts them back into electrical signals for the receiver to process, enabling wireless data exchange.
Question 40: What documentation is MOST critical to maintain for safety compliance in the Certified Wireless Technician field?
- Client marketing preferences
- Annual revenue reports
- Incident reports, training records, and inspection logs (Correct answer)
- Employee vacation schedules
Correct answer: Incident reports, training records, and inspection logs
Incident reports, training records, and inspection logs are essential safety documentation for demonstrating compliance.
Question 41: A wireless client shows strong signal strength but experiences frequent disconnections. What should you check first?
- Increase the transmit power on the AP
- Check for RF interference sources near the client (Correct answer)
- Change the client's IP address
- Replace the access point antenna
Correct answer: Check for RF interference sources near the client
Frequent disconnections with strong signal often indicate RF interference rather than signal strength issues.
Question 42: Which risk management approach is MOST effective for CWT professionals when evaluating potential workplace hazards?
- Relying solely on historical accident data
- Reactive analysis after incidents occur
- Delegating all safety decisions to management
- Proactive hazard identification and assessment (Correct answer)
Correct answer: Proactive hazard identification and assessment
Proactive hazard identification and assessment allows professionals to identify and mitigate risks before incidents occur.
Question 43: What is RF signal attenuation?
- Signal amplification.
- Signal boosting with antennas.
- Loss of signal strength over distance or obstacles (Correct answer)
- Signal encryption.
Correct answer: Loss of signal strength over distance or obstacles
RF signal attenuation refers to the reduction in the strength of a radio frequency signal as it travels through a medium or over a distance. This loss of signal can be caused by various factors, including absorption by materials like walls, reflection, scattering, and simply the natural spreading of the signal energy. Understanding attenuation is vital for designing effective wireless networks, ensuring adequate coverage, and maintaining reliable connectivity.
Question 44: What is the function of a firewall in a wireless network?
- To reroute DNS
- To boost Wi-Fi speed
- To filter and protect network traffic (Correct answer)
- To block all traffic
Correct answer: To filter and protect network traffic
A firewall acts as a security barrier in a wireless network, monitoring and controlling incoming and outgoing network traffic based on predefined security rules. Its function is to filter out malicious data, block unauthorized access attempts, and protect the network from various cyber threats. This ensures that only legitimate and safe traffic can pass through, safeguarding network resources and data.
Question 45: In Certified Wireless Technician practice, what is the FIRST step when a safety hazard is identified in the workplace?
- Immediately secure the area and report the hazard (Correct answer)
- Continue working and report at end of shift
- Document it for the next safety audit
- Wait for a supervisor to notice the issue
Correct answer: Immediately secure the area and report the hazard
When a safety hazard is identified, the immediate priority is to secure the area to prevent injury and report the hazard through proper channels.
Question 46: What distinguishes a Certified Wireless Technician certified professional from a non-certified practitioner?
- Certification validates competency through standardized assessment against benchmarks (Correct answer)
- Certified professionals always have more experience
- Certified professionals only work in larger organizations
- There is no meaningful difference
Correct answer: Certification validates competency through standardized assessment against benchmarks
Certification provides objective validation of competency through standardized assessment.
Question 47: A wireless network experiences a sudden increase in beacon frames observed on a spectrum analyzer. This most likely indicates:
- A new AP or rouge device has come online broadcasting multiple SSIDs (Correct answer)
- A DFS event has forced a channel change
- Clients are scanning for new networks aggressively
- The existing APs have increased their beacon interval
Correct answer: A new AP or rouge device has come online broadcasting multiple SSIDs
A surge in beacon frames typically means a new transmitter—possibly a rogue AP broadcasting multiple SSIDs—has appeared in the RF environment.
Question 48: When new equipment is introduced in Certified Wireless Technician, what is REQUIRED before staff use it?
- Watching a colleague use it once
- A brief verbal overview
- Formal training, competency verification, and documentation (Correct answer)
- Reading the manual independently
Correct answer: Formal training, competency verification, and documentation
Formal training, competency verification, and documented training completion are required.
Question 49: What is the MOST effective way for new CWT professionals to build competency?
- Focusing solely on advanced topics
- Studying certification materials exclusively
- Combining formal education, mentored practice, and ongoing professional development (Correct answer)
- Learning through trial and error
Correct answer: Combining formal education, mentored practice, and ongoing professional development
Building competency requires formal education, mentored practice, and ongoing development.
Question 50: What is the minimum recommended cable category for IEEE 802.3at (PoE+) installations?
- CAT3
- CAT6A
- CAT5
- CAT5e (Correct answer)
Correct answer: CAT5e
CAT5e is the minimum recommended cabling for PoE+ deployments, providing adequate conductor gauge and insulation to minimize resistive power losses.
Question 51: What does the Temporal Key Integrity Protocol (TKIP) use to improve upon WEP's weaknesses?
- GCMP-256 encryption
- Per-packet key mixing and a message integrity check (Michael MIC) (Correct answer)
- SAE Dragonfly handshake
- AES-CCMP with 128-bit keys
Correct answer: Per-packet key mixing and a message integrity check (Michael MIC)
TKIP added per-packet key mixing, a sequence counter, and the Michael MIC to address WEP's static key and integrity vulnerabilities.
Question 52: Which risk management approach is MOST effective for CWT professionals when evaluating potential workplace hazards?
- Reactive analysis after incidents occur
- Delegating all safety decisions to management
- Relying solely on historical accident data
- Proactive hazard identification and assessment (Correct answer)
Correct answer: Proactive hazard identification and assessment
Proactive hazard identification and assessment allows professionals to identify and mitigate risks before incidents occur.
Question 53: What distinguishes a Certified Wireless Technician certified professional from a non-certified practitioner?
- There is no meaningful difference
- Certification validates competency through standardized assessment against benchmarks (Correct answer)
- Certified professionals only work in larger organizations
- Certified professionals always have more experience
Correct answer: Certification validates competency through standardized assessment against benchmarks
Certification provides objective validation of competency through standardized assessment.
Question 54: When conducting a risk assessment for CWT operations, which factor should receive the HIGHEST priority?
- Cost of implementing safety measures
- Convenience for daily operations
- Probability and severity of potential harm (Correct answer)
- Time required for safety training
Correct answer: Probability and severity of potential harm
The probability and severity of potential harm are the primary factors in risk assessment.
Question 55: BSS Coloring in 802.11ax is designed to improve which aspect of WLAN performance?
- Roaming speed between APs
- Encryption key rotation frequency
- Spatial reuse by allowing concurrent transmissions in overlapping BSSs (Correct answer)
- Beamforming antenna gain
Correct answer: Spatial reuse by allowing concurrent transmissions in overlapping BSSs
BSS Coloring tags frames with a color identifier so stations can differentiate overlapping BSS transmissions and defer only when necessary, improving spatial reuse.
Question 56: A wireless network uses 802.11ac Wave 2. A technician wants to maximize throughput by serving multiple clients simultaneously on the same channel. Which technology enables this?
- TWT (Target Wake Time)
- MU-MIMO (Multi-User MIMO) (Correct answer)
- Beamforming
- OFDMA
Correct answer: MU-MIMO (Multi-User MIMO)
MU-MIMO introduced in 802.11ac Wave 2 allows an AP to transmit to multiple clients simultaneously using spatial stream separation.
Question 57: In a high-density WLAN deployment such as a stadium, which channel width is recommended for 5 GHz to maximize the number of available non-overlapping channels?
- 20 MHz (Correct answer)
- 160 MHz
- 80 MHz
- 40 MHz
Correct answer: 20 MHz
20 MHz channels maximize the number of non-overlapping channels available in the 5 GHz band, reducing co-channel interference in dense environments.
Question 58: Which 802.11 amendment introduced support for operation in the TV White Space (TVWS) spectrum below 1 GHz?
- 802.11p
- 802.11af (Correct answer)
- 802.11ah
- 802.11ad
Correct answer: 802.11af
IEEE 802.11af (also called White-Fi or Super Wi-Fi) operates in unused TV broadcast channels (54–790 MHz), offering extended range due to favorable propagation at lower frequencies.
Question 59: What is the difference between a predictive site survey and a physical (active/passive) site survey?
- A predictive survey uses software modeling to simulate RF propagation before installation; a physical survey measures actual signals on-site (Correct answer)
- There is no meaningful difference between the two methods
- A predictive survey uses expensive hardware; a physical survey uses only free apps
- A predictive survey is performed after installation; a physical survey is done before
Correct answer: A predictive survey uses software modeling to simulate RF propagation before installation; a physical survey measures actual signals on-site
Predictive surveys use floor plans and RF modeling software to simulate coverage before deployment, while physical surveys measure real signal levels in the actual environment.
Question 60: Which 802.11ax (Wi-Fi 6) feature reduces power consumption for IoT devices by scheduling when they wake to receive data?
- OFDMA
- TWT (Target Wake Time) (Correct answer)
- BSS Coloring
- MU-MIMO
Correct answer: TWT (Target Wake Time)
TWT allows an AP and client to negotiate specific times for the client to wake and exchange data, significantly extending battery life.
CWT-101 Certified Wireless Technician
The CWT-101 exam validates foundational knowledge of wireless networking, covering RF hardware, 802.11 standards, WLAN equipment, and organizational wireless deployment goals. It is administered by CWNP for entry-level wireless technicians.
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