Certified Wireless Design Professional
Last Update Oct 15, 2025
Total Questions : 281
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An enterprise customer is subject to the highest standards for network uptime. When designing their wireless network, you should consider which of the following?(Choose all that apply)
Response:
When performing an indoor predictive site survey to make the WLAN planning and design cycle more efficient, what is a best practice for
configuration of the simulated APs in the predictive modeling software?
A bandpass filter has a maximum in-band loss of 1.5 dB, ripple of 0.4 dB, and a return loss of 15 dB. What is the minimum in-band loss?
Response:
To ensure that your design meets the requirements of the WLAN, what should be defined in your WLAN design software that will result in different requirements at varying locations on the floor plan1?
What are some common problems with short (12 or fewer characters) ASCII passphrases in WPA/WPA2-Personal networks?
Response:
What document should be created that provides instructions for install technicians to mount and configure APs?
A WLAN that you designed has been deployed in one area, users ate complaining that the network performs poorly. When you analyze the area you see that a new interferer has been introduced that was not there during the pre-design survey You've been informed that the interferer cannot be removed as it is an essential loT device. What action do you recommend?
What metric implements the simplest algorithm and lowest accuracy in networks requiring locations?
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In an RSN requiring low-latency reassociations and no fast secure roaming protocols, what security solutions are ideal for protecting VoWiFi communication?(Choose all that apply.)
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To increase capacity in a coverage-based wireless network, which of the following techniques are typically recommended?(Choose all that apply.)
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A museum wants to offer Wi-Fi to its visitors. One of their requirements is to have the APs blend into the design of the museum. What should you do to meet this requirement?
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You are testing a VoWLAN deployment, and your communication measurements show a certain amount of lost packets. What would be an
acceptable packet error rate value to still provide acceptable call quality?
One of your warehouse customers called you reporting problems with their WLAN in some locations that you designed and installed over a year ago. What should be one of your first considerations for your line of questioning?
Response:
What single tool, by design can be used to verify channel selection, encryption in use and number of APs above a specified signal threshold in a given location during deployment?
Your customer requires fast secure roaming. Which two types of roaming are specified in 802.11-2016 FT roaming that will help meet this goal?
What functions do the control plane of centralized and distributed WLAN architectures help solve?(Choose all that apply.)
Response:
In a PC-based spectrum analyzer, what data chart identifies the overall RF utilization of a specific frequency in the environment being surveyed?
What document can be useful when determining client capabilities in a WLAN design project?
What are some advantages of designing guest access with all guest users tunneled directly into the DMZ?
Response:
You have determined the best mounting locations for APs in a given installation. The facilities manager has asked you to change the locations for
several APs due to aesthetic concerns. You suggest mounting the APs in the ideal locations and painting them so they go unnoticed in the
environment.
What is a valid recommendation or consideration when painting APs?
Four buildings are located in a square orientation to each other. Fisch Stix Food Company is requesting a PtMP link between the buildings. On the building with the root bridge link, what type of antenna is the best choice?
Response:
Given A project parameter defines a requirement or constraint (or a project that can be defined before any file imports or design actions. What is an example of a project parameter commonly available in WLAN design software?
Prior to meeting with the customer for the first time, you should do which of the following?
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What is the most suitable antenna option to be used when designing a WLAN infrastructure with APs mounted on a ceiling with a height of more than 20 feet and having all of the client stations used from the floor?
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Given: A WLAN controller is connected to ABC Company's core layer 3 Ethernet switch with an IEEE 802.1Q trunk connection. The WLAN
controller's native
VLAN is VLAN 6 and its IP address is 10.0.14.2 /24. Lightweight APs supporting centralized forwarding are connected to the network on VLANs 7,
8, and 9, and they each build a Layer 3 tunnel back to the WLAN controller's IP address.
The dynamically assigned IP addresses received by each AP from a DHCP server will be ________________.
What factors are key features when designing a guest network for a large enterprise?(Choose all that apply.)
Response:
An associated STA detects a new BSS with the same SSID as the STA's current BSS. The new BSS uses a different IP subnet than the current BSS.
If the STA is configured to use 802.1X/EAP preauthentication, what is likely to occur?
Left to its simplest form, what method does a location algorithm use to determine location within a WLAN coverage area?
Response:
If a 24-port switch has a PoE budget of 740 W, how many IEEE 802.3at devices can certainly be powered on by it?
You performed a site survey with two USB Wi-Fi adapters using a special driver written for the site survey software. After deployment, you realized
that the client devices used by your customer are getting lower RSSI values than that shown during your site survey. What is the most likely reason
for this result?
What kind of site survey helps you identify if roaming is working as designed?
In high-density environments, such as stadiums and convention centers, what extra factor has to be taken into account that can attenuate Wi-Fi
signals when these environments are having an event?
Location technology (RTLS) can use which of the following methods?(Choose all that apply.)
Response:
What is the purpose of Friis transmission equation [ (LdB) = 20 log(d) + 20 log (f) - 27.55 ]?
An AP vendor being considered for a WLAN deployment suggests that their 2 4 GHz and 5 GHz dual-band APs use software defined radios What unique capability does this indicate in comparison to non-software defined radios?
After designing and deploying a WLAN infrastructure, you realized the CCI is causing poor performance in the 2.4 GHz band. Primarily, you've
designed the
WLAN for 5 GHz and 2.4 GHz as a best effort. You found out that the implementers didn't follow your guidelines when configuring the WLAN
infrastructure. What can you do to minimize as much as possible the CCI impact in the 2.4 GHz band?
What kind of applications has the character traits of many communications back and forth between the server and client for each transaction initiated by the user?
For example, several files, images and other data files may be required to download to the client with each click from the user. Choose the best answer.
Response:
Before performing a pre-deployment passive RF survey of a new deployment using survey mapping software, which of the following must be performed?
In addition to a copy of your design, which tools should you use to ensure the installation team deploys APs where you have them designed to be
located?
In this question, you will compare the mobility processes of a network that supports WPA2-Personal and WPA2-Enterprise. Assume the use of a
15-character
ASCII passphrase for WPA2-Personal and EAP-TTLS/MSCHAPv2 with WPA2-Enterprise. Also, assume that proprietary roaming protocols are not
supported.
When a device transitions from one BSS to another within the same ESS, what step must be performed in the WPA2-Enterprise transition that are
not performed in the WPA2-Personal transition?
You deployed an AP and installed its antenna, and you now need to set the AP transmit power. Given a desired EIRP of 21 dBm, and an antenna
gain of 5.85 dBd connected through 25 feet of cable with a loss specification of 4 dB/100 feet.
Assuming that there is no significant loss from the connectors, what should be the transmit power level for this AP?
You have been tasked with performing safety and operations training for outdoor bridge link installation. The antennas are to be installed on a 70-foot tower on one end and the roof top of an office building on the other end.
What might be required for the tower installation?
Response:
What are three potential benefits when an organization lets their employees bring their own device onto the company s network"?
When using a predictive design tool, you have selected APs with an antenna gain 3 dBi and set the transmit power of the predicted APs to 25 mW.
What should be EIRP of the APs in the design?
After importing a floor plan to a predictive design tool, what should be done prior to adding APs, antennas and attenuators (e.g., walls)?
What architecture suffers the biggest limitation for sharing control information across APs?
Response:
As you plan a WLAN upgrade, you have assessed the network requirements and data signatures of your applications. One of the popular
applications used on your network requires high bandwidth and low to medium Wi-Fi loss, but can tolerate moderate latency and jitter.
What application matches this description?
A cable with 2.5 dB of loss is used to measure the return loss of an antenna. The measured value in-band is shown to be larger than 20 dB. What is the actual return loss of the antenna, and is it considered to be a reasonable value?
Response:
You are creating an outdoor bridge link that spans more than 1000 yards. Which one of the following antenna types is more likely to be included in
the design?
You have been asked to design a WLAN for an organization. They will be replacing an existing WLAN Currently each AP operates 8 SSlDs on each radio What will you communicate with the organization so that they understand the need to reduce the number of SSlDs?
During an RFP analysis, one of the vendors mentioned that you'll need to upgrade your Gigabit Ethernet switches to MultiGig switches to ensure
support for
802.11ac and 802.11ax, which both offer data rates over 1Gbps. Why is this not sound advice?
Before connecting, mounting and powering 213 total controller-based APs what action should be taken to ensure that they are configured by the controller once powered on and connected lo the network''
What action should be taken after implementing a WLAN based on the design developed from the site survey process?
What advantages are provided by per-user PSKs when compared with ESS-wide PSKs?(Choose all that apply.)
Response:
You are validating association capabilities from clients to an 802.1X/EAP secure SSID. The RADIUS server's IP address is 10.100.50.25 and the
default RADIUS authentication port is used. When testing them, none of the clients are able to associate to the SSID. Troubleshooting the WLAN
infrastructure, you found out that the server is up and the RADIUS service is up as well, but the authenticator is not able to communicate properly
with the server. What's your next troubleshooting step?
When implementing multiple SSIDs to what is each SSID typically mapped in order to provide traffic management separately for each SSID?
If you choose to recommend dynamic channel assignment for the APs in your WLAN design what action should you also recommend'?
During the deployment of a WLAN the customer complains that the chosen locations for several APs are ruining the aesthetics of the building Instead of changing AP locations and requiring a redesign, what action can you recommend1?
When doing some frame capturing over the air during a voice call, you realized that frames on the downlink (from the AP to the client) direction are
not being transmitted with the correct UP value for voice frames, but on the uplink (from the client to the AP) direction are being transmitted
correctly. What's the cause of this issue?
You're about to deploy an Enterprise-class VoWLAN infrastructure. You need to ensure that QoS is properly configured throughout the network.
What Access
Category (AC) should voice frames/packets use?
What important item is often left out of operational and maintenance plans?
Response:
The thermal noise is at −174 dBm/Hz. A spectrum analyzer has a resolution bandwidth of 1 kHz and a 5 dB noise figure. What is the level of the noise floor?
Response:
While performing a validation site survey, you realize that overlapping channels are being used on the 2.4 GHz bad due to the automatic channel assignment algorithm of the WLAN infrastructure.
What should you do to prevent this?
A museum wants to offer Wi-Fi to its visitors. One of their requirements is to have the APs blend into the design of the museum. What should you do to meet this requirement?
You are planning for client devices in a WLAN that is be upgraded to 802.11ac. Which one of the following devices is more likely to have support for 3x3:3 radios and 256 QAM?
Response:
What differences exist between VLANs in wireless and wired domains?
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ABC Manufacturing has a heavily-used dual-band (2.4 / 5 GHz) WLAN, but sporadic RF interference across the 2.4 GHz band is causing dropped
VoWiFi calls and leading to data connectivity and throughput problems.
In addition to avoiding 2.4 GHz channels and installing a distributed spectrum analyzer to locate RF interference sources, what should the
implementer do to resolve the problem fully?
Which type of building material causes the most attenuation of Wi-Fi signals'?
For an antenna 35 dBi of gain is needed. What antenna type should be used to achieve this gain?
Response:
You have performed a validation site survey after deploying a WLAN infrastructure that is an All-Wireless-Office. One specific application of your
customer is experiencing delay when using the application after moving from wired connectivity. After your validation, you realized that all APs are
using 80 MHz channel- widths instead of 20 MHz on the 5 GHz band, as it was designed. What can be done to resolve the delay on this
application?
When performing an indoor predictive site survey to make the WLAN planning and design cycle more efficient, what is a best practice for configuration of the simulated APs in the predictive modeling software?
Response:
In most WLAN design tools, after defining project parameters or during the project creation wizard what action will you take before you can begin the actual design process?
When live video streaming solutions that transmit simultaneously to more than one recipient are used, what special capability should be considered and configured in all affected WLAN implementations?
Response:
Which one of the following options would you consider a well-designed WLAN infrastructure when measuring RSSI Notse floor and SNR in a required area?
Low RSSI, Low Noise Floor Low SNR
High RSSI, Low Noise Floor High SNR
High RSSI, High Noise Floor Low SNR
Low RSSI, High Noise Floor Low SNR
TESTED 15 Oct 2025
