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:
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A
Scope creep has occurred.
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B
The 802.3af RTLS standard should be incorporated into the AP configuration.
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C
The 802.11g standard incorporates location tracking.
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D
Any WLAN will support location tracking.
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E
The power requirements on the UPS need to be evaluated.
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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?
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A
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B
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C
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D
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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? Response:
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A
Use a plastic cover that could blend in with the environment
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B
Lock the AP inside of a metal box
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C
Place the APs in between walls and I-beams
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D
Use an 802.11b AP, so it looks old enough to be in a museum
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After successfully deploying and validating a WLAN intra structure, who should be trained for a better understanding and management of the solution? (Choose the single best answer)
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A
Support staff and end-users
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B
CEOs and other executives
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C
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D
WLAN designer and WLAN implemented
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When creating a long-distance bridge link, it is important to know the channels in use by other networks on both ends of the link and within a reasonable range It is not as Important to know the channels in use in the middle area of the link. Why is this the case?
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A
Interference happens at the receiver
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B
interference happens at the transmitter
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C
The signals in the middle of the link will increase the amplitude of your signal as it passes through them
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D
Your RF LoS will always be far above any interference in the middle because the signal travels up and then back down to the remote 802.11 receiver
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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? Response:
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A
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B
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C
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D
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Aesthetics are very important in some environments. What common installation technique can be used to best meet this requirement in a stadium?
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A
Painting to match team colors
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B
Using enclosures under the seats or on hand-rails
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C
Mounting on a non-fixed pole
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D
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What are the best practices for belter location accuracy when deploying Wi-Fi RTLS?
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A
Place APs on the center of the required area and make sure that every client device is able to hear" at least three APs
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B
Place APs on the perimeter and throughout the required area and make sure that every client device is able to "hear" at least three APs
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C
Place APs on the center of the required area and make sure that every client device is able to hear at least two APs
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D
Place APs on the perimeter of the required area and make sure that every client device is able to "hear" at least one AP
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Question 9
Multiple choice
What functions may be performed by a WIPS?(Choose all that apply.) Response:
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A
Distributed protocol analysis
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B
Client access to the distribution system
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C
Performance monitoring and response
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D
Data forensics and analysis
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E
Automated threat mitigation
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Correct answersA, C, D, E
Question 10
Single choice
What document should be created that provides instructions for install technicians to mount and configure APs?
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A
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B
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C
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D
Physical installation guide
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Question 11
Single choice
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?
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A
Always use paints with metallic dye in them to prevent potential RF propagation impact.
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B
Painting APs will significantly reduce the output power.
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C
Painting APs may void the product manufacturer's warranty.
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D
Most AP models for indoor environments come in a variety of form factors and colors. Painting is never recommended.
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Question 12
Single choice
What are some common problems with short (12 or fewer characters) ASCII passphrases in WPA/WPA2- Personal networks? Response:
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A
They are more susceptible to dictionary attacks than longer passphrases.
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B
They lead to weak group keys in a BSS.
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C
They only produce a 64-bit PMK instead of a 256-bit PMK.
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D
Very few AP and client vendors support entry of an ASCII-based passphrase.
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Question 13
Single choice
Who should be in the final meeting from the customer-side after successfully implementing a WLAN infrastructure?
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A
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B
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C
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D
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Question 14
Single choice
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? Response:
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A
The APs are still using the 5 GHz lower band
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B
The clients were not upgraded
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C
APs are mounted on the wall
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D
APs are transmitting at a low transmit power
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Question 15
Single choice
If you choose to recommend dynamic channel assignment for the APs in your WLAN design what action should you also recommend'?
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A
Ensure that the output power of all APs is set to the maximum allowed in the regulatory domain
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B
Ensure that the output power of an APs is set to the minimum available in the system interface
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C
Replace all antennas with panel antennas instead of omnidirectional antennas
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D
Configure the settings used by the dynamic channel assignment algorithm optimally for your design
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Question 16
Single choice
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?
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A
This setting allows the site survey software to convert the APs measured downlink RF data into a simulated data set as if the same data were transmitted by a specific client station. It is useful for determining uplink client performance when clients are located far from APs as well as projecting cell size for ad hoc networks.
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B
Since WLAN adapters are not typically calibrated by manufacturers, this setting is a form of software calibration in which you can calibrate an (uncalibrated) adapter to match one of the calibrated adapters shown in the list. This process improves the reliability of RF data collection and reporting when uncalibrated adapters are used.
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C
This is the configuration area in which you specify the adapter type that will be used for the site survey so that the survey software can interpret that adapters reported metrics (based on proprietary formulas) into an RF measurement that is standardized by the survey software and known to its users. This is done
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Question 17
Single choice
What limitation exists when WMM is not enabled on an 802.11n WLAN?
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A
802.11 QoS will not be available
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B
The maximum channel-width will be 20MHz
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C
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D
Only two ACs will be available
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Question 18
Single choice
You have enabled IEEE 80211 FT in your WLAN infrastructure. You want to verify roaming between APs (two at a time) and determine If all of your end-points are capable of performing fast roaming What tool would you use to achieve this goal?
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A
RF Spectrum Analyzer and two spectrum adapters (one for each band)
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B
Predictive design tool and two Wi-Fi adapters (one for each band)
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C
Protocol Analyzer and two Wi-Fi adapters (one for each channel of the chosen bands)
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D
WLAN scannerdiscovery tool and two WI-FI adapters (one for each channel of the chosen bands
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Question 19
Multiple choice
Which of the following items could be considered constraints when performing a network design?(Choose all that apply.)
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A
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B
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C
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D
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Correct answersA, B, C, D
Question 20
Single choice
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?
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A
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B
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C
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D
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Question 21
Single choice
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?
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A
Equip workers laptops with a directional antenna and install APs less than 328 feet (100m) away from the switch.
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B
In this case, extend the cable length just beyond 328 feet (100 m) and position APs as close as possible to the central area of the warehouse.
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C
Position APs along the walls, and equip the APs with Yagi antennas to cover the central area.
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D
Install APs for client access in the central area and use a mesh backhaul link to connect to the DS.
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Question 22
Single choice
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? Response:
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A
Whether the RADIUS server is online and configured for the matching port on the APs and WLAN controllers
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B
Whether the RADIUS shared secret is properly configured on the supplicant and authentication server
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C
Whether the authenticator is configured to support the EAP type(s) your client is configured for
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D
Whether the client has a fully valid certificate
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Question 23
Single choice
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?
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A
The DSCP value is mapped to an IEEE 802.1Q priority tag value by the WLAN controller.
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B
The DSCP value is mapped to the DSCP value in the encapsulating IP header by the layer-3 switch.
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C
The DSCP value is mapped to an IEEE 802.1p (802.1D-2004) UP value by the access point.
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D
The DSCP value is mapped to an IEEE 802.1Q VLAN tag by the access point.
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Question 24
Single choice
You are working on a VoWLAN design with your customer's wired networking team. How many distinct priority levels do you expect for the voice applications?
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A
1 priority level, but 2 queues (one for uplink traffic, one for downlink traffic)
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B
1 priority level per client and AP pair, so the total number depends on the expected number of clients
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C
1 priority level for voice RTP, 1 priority level for voice control and RTCP
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D
1 priority level for VoWLAN client traffic, 1 priority level for wired VoIP client traffic
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Question 25
Single choice
When deploying APs outdoors, what additional component needs to be used that is not needed indoors?
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A
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B
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C
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D
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Question 26
Single choice
What service must be implemented on your customers' network to authenticate users against an LDAP database prior to access to the WLAN infrastructure being granted?
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A
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B
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C
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D
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Question 27
Single choice
Which type of building material causes the most attenuation of Wi-Fi signals'?
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A
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B
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C
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D
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Question 28
Single choice
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:
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A
-
B
Upgrade the Ethernet connections to MultiGig
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C
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D
Turn up the output power on the APs so that they can handle more clients
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Question 29
Single choice
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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A
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B
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C
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D
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Question 30
Single choice
Looking at a client radio specification sheet that states Receive Sensitivity of #82 dBm @ 18 Mbps would mean: Response:
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A
It would need to hear a signal <#82 dBm in order to use the 24 Mbps PHY rate.
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B
It is only capable of transmitting at 18 Mbps PHY rates at #82 dBm.
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C
It must hear a signal >#82 dBm in order to demodulate the 18 Mbps PHY rate.
-
D
It must hear a signal <#82 dBm in order to demodulate the 18 Mbps PHY rate.
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Question 31
Single choice
What is a typical characteristic of barcode scanners?
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A
Low throughput requirements
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B
High throughput requirements
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C
Implementation of 3x3 3 chipsets
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D
No support for any 802.11 security solutions
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Question 32
Single choice
When designing a static channel plan for an office using voice devices near an airport, which range of channels should be avoided to ensure optimal performance when implemented?
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A
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B
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C
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D
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Question 33
Single choice
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?
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A
Verify that the shared secret between the authenticator and the RADIUS server is correct
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B
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C
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D
Restart the RADIUS service
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Question 34
Single choice
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:
-
A
All WMM-PS certified client devices will be prevented from utilizing WMM-PS features until all stations in use on the wireless medium are WMM-PS certified.
-
B
Performance and battery life will be inconsistent between WMM-PS and non-WMM-PS client devices when used with applications that support WMM-PS.
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C
The WLAN infrastructure will set the dozing times of the WMM-PS certified client devices based upon their WMM access category, while the non-WMM-PS client devices will continue to use PSPoll frames.
-
D
WMM-PS enabled APs will allow both WMM-PS and non-WMM-PS stations to use the triggerand-delivery mechanism, but WMM-PS stations will g
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Question 35
Single choice
You told your customer that multipath fading may be mitigated simply by moving one or both of the receivers antennas a small amount, usually by one to four wavelengths away from its original position. Your customer is prepared to make the change, but does not know the wavelength for 802.11ac. What is the approximate wavelength of an 802.11ac radio wave?
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A
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B
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C
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D
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Question 36
Single choice
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:
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A
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B
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C
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D
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Question 37
Single choice
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?
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A
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B
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C
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D
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Question 38
Single choice
When implementing multiple SSIDs to what is each SSID typically mapped in order to provide traffic management separately for each SSID?
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A
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B
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C
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D
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Question 39
Single choice
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?
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A
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B
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C
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D
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Question 40
Multiple choice
Location technology (RTLS) can use which of the following methods?(Choose all that apply.) Response:
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A
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B
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C
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D
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E
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F
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G
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Correct answersA, B, C, D
Question 41
Single choice
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:
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A
HT-STF in Greenfield mode only
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B
HT-LTF in Mixed and Greenfield modes
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C
HT-LTF in Greenfield mode only
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D
HT-STF in Mixed and Greenfield modes
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Question 42
Single choice
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?
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A
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B
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C
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D
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