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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?
Of the following antenna connector types, which one is the smallest?
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 differences exist between VLANs in wireless and wired domains?
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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?
What is the most cost-effective way to accurately measure the height of a ceiling when ladder use is not allowed?
What are some significant drawbacks that are present with WPA/WPA2-Enterprise that are not present with WPA/WPA2-Personal?(Choose all that apply.)
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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?
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?
What kind of antenna results in a nearly circular pattern on the azimuth chart but a very flat donut shape on the elevation chart?
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?
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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?
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?
Modulation can be defined as:
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Excessive uplink RTP frame retransmissions can result in ____________.
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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?
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When selecting a centralized WLAN architecture, what new problem may arise when you change the data forwarding model from centralized to distributed?
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What statements are true regarding jitter and latency?(Choose all that apply.)
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When troubleshooting coverage issues for a wireless network as it appears to new client associations, you should perform which type of survey?
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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?
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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.
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An MSA commonly addresses at least which two legal categories?
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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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?
What is a valid 40 MHz channel configuration in the 2.4 GHz ISM band where channels 1-11 are permitted?
For an antenna 35 dBi of gain is needed. What antenna type should be used to achieve this gain?
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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?
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During a post-deployment verification, you are requested to troubleshoot an area where users are experiencing poor throughput. They are using
data communication only, mainly from laptops. You captured the frame showing an incorrect FCS. This frame is typical of those that were
captured by the analyzer.
What does this frame reveal about the RF network in this area?
A company wants to connect its headquarters to its remote office that is 13 kilometers away using a wireless bridge. What requirement must not
be forgotten by their Wireless Engineer when considering the Fresnel Zone?
What is a radome?
What is the chip rate of 1 Mbps 802.11b?
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While configuring your site survey software for an upcoming manual survey project, you notice the configuration option for "Network Card
Simulation". What is the purpose of such a feature and when would you use it?
What VoWiFi implementations frequently require multicast packet delivery support by the WLAN infrastructure?
Assume that your network operates in a regulatory domain that allows use of the entire 5 GHz space allowed in the 802.11ac amendment. In your
upcoming
802.11ac deployment, you would like to take advantage of the performance improvements that result from channel bonding. However, after
extensive testing, you have determined that your mission-critical WLAN should not use channels requiring DFS support.
Given those two criteria (enable channel bonding and disable DFS channels), in the 5 GHz spectrum, how many non-overlapping 40 MHz channels
will your system be able to use?
Which definition correctly describes the "local MAC" variation of the centralized WLAN architecture?
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?
What two 802.11 amendments deal with regulatory and transmission requirements?
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What commonly causes a client-to-AP link imbalance?
During your first pre-deployment meeting with the deployment team, you hand out the full design documentation to all of them. What's your
primary goal during this meeting?
A customer wants to deploy a WLAN that employs centralized forwarding. What LAN requirements should you look for?
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When implementing WLAN security according to common best practices, what feature should be enabled when configuring an EAP type?
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?
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 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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During a post-validation assessment, you have configured a client for 802.1X/EAP but it is not passing authentication. Which areas should you check in the WLAN configuration?
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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?
What might limit the ability to locate 802.11 clients using a WLAN infrastructure without an 802.11 tag?(Choose all that apply.)
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?
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What should always be done before connecting an AP to the production network?
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Which operational plane would be responsible for performing automated RF management?
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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?
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Which document provided to your customer should include all devices and parts that are going to be used during the deployment of their WLAN
infrastructure?
What functions may be performed by a WIPS?(Choose all that apply.)
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?
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A controller-based WLAN infrastructure has its controller on a different subnet than its APs. What device must be used to enable any
communication between the
Controller and the APs?
When installing APs on high ceilings, what should be the most common PPE to be used?
What type of protection should be provided to outdoor antenna installations?
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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?
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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?
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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?
You are configuring an 802.11ac AP using manual channel planning. The design specification calls for the current AP to be placed on channel 56 in 5 GHz and to disable the 2.4 GHz radio.
For what could the 2.4 GHz radio be used if not standard AP operations?
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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?
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A high power radio system transmits at 40,000 Watts. What is this power in dBm? Solve this without a calculator.
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What statement is true of a WLAN design that supports Real-Time Location Services (RTLS) with 802.11 RFID asset tags?
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?
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 ________________.
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 are the deliverables to your customer after successfully implementing a WLAN infrastructure?
What strategy can be used to ensure efficient cell overlap for VoIP site surveys?
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