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What is the DSCP Per Hop Behavior equivalent classification of the 802.11 AC_VO priority level?
During a validation site survey, you realize that the installers mounted some of the APs above the ceiling. They said that this was a request from
the building architect due to aesthetics constraints. During the requirements gathering, you weren't advised about any aesthetics constraints from
the main stakeholder of the project. What should you do in this case?
An engineering firm just upgraded their WLAN form nine 802.11n APS to nine 802.11ac APs. After this upgrade, they did not see any improvement
in throughput.
What is the most likely cause of this result?
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?
Response:
One of your customers plans on providing wireless coverage to a warehouse facility. After performing an initial walkthrough, you collect the
following information:
The central part of the warehouse is between 400 and 600 feet (122 to 183 meters) from the warehouse switches mounted on the walls.
✑The warehouse storage is composed of metallic racks with varying inventory levels and contents, from electronics and plastic toys to food
pallets and juice bottles.
✑Workers need basic data coverage from their working location, and are not highly mobile. They usually work from one single aisle, and their
laptop is on a cart with wheels.
What would be your one recommendation to provide coverage to the central area of the warehouse?
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?
In a multiple channel architecture (MCA) network supporting 802.1X authentication, what aspect of WLAN design affects client roaming efficiency
and effectiveness?
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?
What part of the 802.11n preamble is used by the receiver to estimate the spatially multiplexed signal channel? What mode is this used in?
Response:
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?
Response:
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?
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 statement is true of a WLAN design that supports Real-Time Location Services (RTLS) with 802.11 RFID asset tags?
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?
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?
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?
Location technology (RTLS) can use which of the following methods?(Choose all that apply.)
Response:
Before performing a pre-deployment passive RF survey of a new deployment using survey mapping software, which of the following must be performed?
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?
When installing APs on high ceilings, what should be the most common PPE to be used?
You have initiated a site survey to be performed and the team has been onsite and is halfway through gathering the necessary data.
The project sponsor just asked you to make sure the WLAN supports radio frequency identification (RFID) location tracking. How would you possibly characterize this situation?
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?
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:
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:
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?
When selecting a centralized WLAN architecture, what new problem may arise when you change the data forwarding model from centralized to distributed?
Response:
Looking at a client radio specification sheet that states Receive Sensitivity of −82 dBm @ 18 Mbps would mean:
Response:
During a validation site survey, you realize that the installers mounted some of the APs above the ceiling. They said that this was a request from the building architect due to aesthetics constraints.
During the requirements gathering, you weren't advised about any aesthetics constraints from the main stakeholder of the project. What should you do in this case?
Response:
You are using site software design features. You have imported a floor plan, but the simulated RF coverage is nowhere close to the real RF coverage you see with a walkabout.
Given that the simulation is significantly different, when step was likely missed when using the software?
Response:
What factors are key features when designing a guest network for a large enterprise?(Choose all that apply.)
Response:
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?
When performing an active site survey in an existing WLAN infrastructure, in addition to gathering throughput data, what other important function
will you typically be testing at the same time?
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 might limit the ability to locate 802.11 clients using a WLAN infrastructure without an 802.11 tag?
iPerf is a tool used in site surveys and validation surveys for what purpose?
Response:
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?
You're preparing to perform a site survey for a company that processes meat. Some areas are restricted due to high-security. What do you have to
do in order to proceed with the site survey?
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?
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 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?
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?
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 selecting a centralized WLAN architecture, what new problem may arise when you change the data forwarding model from centralized to
distributed?
When installing a cloud-based AP, what is the most common process used?
Response:
What should always be done before connecting an AP to the production network?
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?
A signal passes through a 10-meter cable, an amplifier, and then a filter. The amplifier has an output that is eight times higher in power than its input. Each meter of cable reduces the signal level by a factor of 4. The filter has a loss of 5 dB.
What is the total loss/gain of the three elements in series?
Response:
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?
Response:
What roaming technology uses stored keys at the APs for roam back if a client STA returns after having roamed away?
Response:
Why does a frame transmitted at 1 Mbps have a greater usable range than the same frame transmitted at 54 Mbps?
What advantages are provided by per-user PSKs when compared with ESS-wide PSKs?(Choose all that apply.)
Response:
What VoWiFi implementations frequently require multicast packet delivery support by the WLAN infrastructure?
If the amplifier in Question 4 has a noise figure of 10 dB but a gain of 0 dB, what is the total noise figure of the cable, amplifier, and filter in series?
Response:
What type of standards-based encryption is used by office extension APs for the traffic tunnel?(Choose all that apply.)
Response:
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?
When analyzing published competitive tests by equipment vendors, what items are the tests usually lacking?(Choose all that apply.)
Response:
What are the three biggest WLAN enterprise verticals?(Choose all that apply.)
Response:
TESTED 04 May 2024