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TESTED 23 Nov 2024
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During a post-validation survey, you find an area lacking any detectable Wi-Fi signal at all It is located behind an elevator shaft What is a common solution to this problem?
Your customer requires a security solution in which client credentials are used and the authentication server must have a certificate with optional
client certificate use. Which EAP method would be the best fit for their requirement?
As a device starts to shift to lower PHY rates, what factors usually influence a device decision to shift to lower PHY rates?(Choose all that apply.)
Response:
How can you increase efficiency in an 802 11n 2.4 GHz multiple-channel architecture network?
What metric implements the simplest algorithm and lowest accuracy in networks requiring locations?
Response:
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?
During a customer walkthrough you notice an area of the CAD drawing where it is not accurate. What next step should you take?
Response:
When performing a spectrum analysis walkthrough of a facility tor which you will be creating a WLAN design you detect an interferer What should you do?
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?
Wh.ch one of the following options is a dedicated throughput testing application, usable on both the WLAN and LAN?
In a large enterprise (5000+ wireless users), by what would NOT be a recommended method by which IP addresses and VLANs are assigned to
different clients associated to the same AP?
Looking at a client radio specification sheet that states Receive Sensitivity of −82 dBm @ 18 Mbps would mean:
Response:
In a PC-based spectrum analyzer, what data chart identifies the overall RF utilization of a specific frequency in the environment being surveyed?
ABC Company has a WLAN controller with 10 controller-based APs; the Voice SSID is configured for centralized data forwarding. Each AP is
connected to an access port on a layer-2 Ethernet switch. Each layer-2 switch is uplinked to a single layer-3 core Ethernet switch. The WLAN
controller is connected directly to the layer-3 core Ethernet switch. Layer-3 tunnels are created between all controller-based APs and the WLAN
controller. A voice server is connected to the layer-3
Ethernet switch.
When a voice-enabled QoS STA sends an IP data packet to a voice server in this scenario, the DSCP value carried in the STA's IP data packet gets
mapped to what and by which device?
What advantage provided by 802.11n and 802.11ac is not usable in 1X1:1 low-end client devices?
What document should be created that provides instructions for install technicians to mount and configure APs?
When you see the SKINNY protocol in a post-install validation protocol capture, what does this indicate?
Prior to meeting with the customer for the first time, you should do which of the following?
Response:
Given: In a site survey deliverable report, you are expected to explain the spectrum measurements taken at the customers site. What portion of a
spectrum analyzer view can be used to determine if a given channel is too active for use as the active channel for a new AP?
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 might limit the ability to locate 802.11 clients using a WLAN infrastructure without an 802.11 tag?(Choose all that apply.)
In a convention center, you have received complaints about the WLAN infrastructure. At this moment, the are only two APs in one auditorium.
After analyzing the situation, you determined that there are more client devices that the infrastructure was designed for. There are only two APs to support more than 300 devices using the Wi-Fi at the same time.
What should you do to make the Wi-Fi work as expected?
Response:
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:
During lunch time in the break room of a company, Wi-Fi connectivity on the 2.4 GHz band is intermittent. Every other time of the day, it works fine. What's the likely cause of this issue?
Response:
Using a SCA means that all APs will be using the same channel in a given layer. How is the AP with which the client associates determined?
Response:
When surveying an existing WLAN infrastructure for a possible redesign, you use two Wi-Fi USB adapters to collect RSSI data and two USB
spectrum analysis adapters to collect RF spectrum data. Since your laptop doesn't have enough USB ports, you use a 4-port powered USB 3.0 hub.
What issues could be caused by the use of USB 3.0 that will impact your site survey?
When implementing multiple SSIDs to what is each SSID typically mapped in order to provide traffic management separately for each SSID?
The installation crew for your WLAN project wants to install a few APs to locations nearby the ones specified in the RF design document. What next step should occur?
Response:
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?
What are the two most common industry-standard protocols used to transport data from an AP to a Wireless LAN Controller?
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?
iPerf is a tool used in site surveys and validation surveys for what purpose?
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What roaming technology uses stored keys at the APs for roam back if a client STA returns after having roamed away?
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What differences exist between VLANs in wireless and wired domains?
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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?
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?
You must perform a site survey that defines signal strength, throughput and latency What kind of survey should you perform?
Given: You are evaluating the theoretical and real-world RF gain benefits of transmit and receive features introduced by 802.11 with MIMO. This
exercise allows you to quantify the features value in a real-world environment.
What is the maximum theoretical signal gain of chip-based TxBF and MRC (as features) when compared to the same AP using only a single
antenna for transmit and receive (effectively simulating a 1x1 chip)?
You are designing a WLAN and nave been asked to recommend a security solution for the network The organization requires that 802 1X/EAP be implemented, but they do not have a PKI and do not wish to deploy one They suggest that mostly Windows clients. Apple phones and Android phones will be used What do you recommend?
What are the best practices for belter location accuracy when deploying Wi-Fi RTLS?
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:
As an implementation engineer, you have just received initial design specs from a network designer for your dual-band 802.11n deployment. The
network design documents prescribe the following data rate configuration for the 2.4 GHz radio:
Basic Rates 5.5, 6, 11, 12 Mbps
Supported Rates 9, 18, 24, 36, 48, and 54 Mbps as well as MCS 0-15
What will result from this design strategy?
What type of protection should be provided to outdoor antenna installations?
Response:
A wireless engineer from your company performed a site survey in an office building where a wireless network extension was needed. He reports
that while performing a Layer 1 sweep near a meeting room full of people, he detected RF activity with a very low duty cycle. He is unsure how to
interpret what he recorded to determine its impact on a future Wi-Fi network.
What is true about this RF environment and its potential impact on the WLAN?
Given: As the wireless network administrator for XYZ Company, you are planning to upgrade your aging wireless network infrastructure, as well as
some clients, to support 802.11ac. In your research, you have discovered that your new wireless client devices and infrastructure are 802.11ac,
WMM, and WMM-PS certified by the Wi-Fi Alliance. Some of your existing client devices are 802.11a/b/g devices that do not support WMM.
Given this information, what scenario is possible when your company's employees begin using both types of client devices on the new WLAN?
For an antenna 35 dBi of gain is needed. What antenna type should be used to achieve this gain?
Response:
What happens when you double the channel width (for example, use channel bonding) in a BSS?
Given: For this fill-in the blank question, each answer option contains an answer for the first and second blanks, separated by a dash "—". Choose
the answer option that correctly fills in both blanks in the following sentence.
A WLAN may use 802.11 admission control to ________, and admission control requirements are configured separately for each ________.
An amplifier has a 1 dB compression point of 32 dBm and a gain of 20 dB. Which is the highest average input power shown here that would be safe to operate a 24 Mbps 802.11g signal so that spectral regrowth is not a problem?
Response:
In a convention center, you have received complaints about the WLAN infrastructure. At this moment, the are only two APs in one auditorium. After
analyzing the situation, you determined that there are more client devices that the infrastructure was designed for. There are only two APs to
support more than 300 devices using the Wi-Fi at the same time. What should you do to make the Wi-Fi work as expected?
What should you do during the design process of a point to point bridge link to minimize CCI and ACl?
To increase capacity in a coverage-based wireless network, which of the following techniques are typically recommended?(Choose all that apply.)
Response:
What is the minimum PoE budget needed on a switch to support 6 (six) APs that can only be powered using IEEE 802.3at if no other details are provided?
Response:
How much more power can a 1 Mbps 802.11b signal have than a 54 Mbps 802.11g signal if it is sent through a saturated amplifier?
Response:
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:
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:
Switches and APs have already been chosen by your customer. All switches support 802.3bz MultiGig interfaces and APs are 4x4:4 802.11ac
wave 2 capable of using dual-5GHz and have one MultiGig interface. Some cable drops for the APs will run for more than 180.5 feet (or 55
meters). To support MultiGig, what is the best choice of cabling?
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 conducting a physical site survey where heavy machinery is repaired. What is a common item required specifically for this type of survey?
Excessive uplink RTP frame retransmissions can result in ____________.
Response:
When deploying a new WLAN infrastructure using PoE to power the APs, you realize that a known good AP is not powering up. You use the same
cable to connect your laptop and connect without any trouble. What is the most likely reason the AP did not power up?
When analyzing published competitive tests by equipment vendors, what items are the tests usually lacking?(Choose all that apply.)
Response:
When a WLAN controller sends an 802.11 frame to a lightweight AP for transmission on the wireless medium, how does it mark the frame for
802.11 QoS priority?
What strategy can be used to ensure efficient cell overlap for VoIP site surveys?
Response:
Which DHCP option, when required, should be configured and enabled to help APs locate their wireless LAN controller?
When selecting a centralized WLAN architecture, what new problem may arise when you change the data forwarding model from centralized to
distributed?
During a validation site survey, you realize that the installers mounted some of the APs on the wait when the design called Tor a celling mount. They said that this was done because the cabling company did not have the right tools to run the cables above the ceiling. You know that this will cause a difference in how the Wi-Fi signal will radiate throughout the environment. What should you do in this case?
When deploying APs outdoors, what additional component needs to be used that is not needed indoors?
What is the DSCP Per Hop Behavior equivalent classification of the 802.11 AC_VO priority level?
Your customer's 802.11n laptops are not able to see the SSID in the 5 GHz band in the conference room. When doing a walkthrough using one of
these laptops, you confirm that it is unable to see the SSID in the 5 GHz band in the conference room. When using your own 802.11 ac laptop,
you're able to see the SSID. What is the most likely cause of this problem?
What is the most cost-effective way to accurately measure the height of a ceiling when ladder use is not allowed?
You are selecting external antennas for use in a bridge link deployment. What chart should you request from the antenna vendors to make an
accurate selection?
When installing APs on high ceilings, what should be the most common PPE to be used?
After designing a WLAN infrastructure using predictive design software. What's the best way to validate the predictive design in the physical space before deployment, if time and budget allow for it?
What advantages are provided by per-user PSKs when compared with ESS-wide PSKs?(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?
When performing a roaming test and packet capture at the same time, what are two particular frames that will be present when roaming between two APs is successful?
Which one of the following is an essential metric to measure when performing a survey and design for VoIP across WLANs?
TESTED 23 Nov 2024