What are the three biggest WLAN enterprise verticals?(Choose all that apply.)
Response:
An organization is implementing a new WLAN. They are upgrading a very old 802.11g network that only a few devices used Now. they expect more than 250 devices to use the new WLAN that will operate 802.11ax Aps. What wired-side consideration should you address in your design recommendations?
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?
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?
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?
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?
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 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?
Which DHCP option, when required, should be configured and enabled to help APs locate their wireless LAN controller?
What kind of antenna results in a nearly circular pattern on the azimuth chart but a very flat donut shape on the elevation chart?
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?
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?
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?
What should always be done before connecting an AP to the production network?
Response:
In 802.11, clients are required to be calibrated for RSSI and SNR reporting to:
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:
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?
What are the best practices for belter location accuracy when deploying Wi-Fi RTLS?
What type of protection should be provided to outdoor antenna installations?
Response:
Install technicians are deploying a multi-floor WLAN that you have designed They have finished the first floor and all APs on that floor are powered on and functioning No APs on any other floors have been deployed at this time You are considering performing a post-deployment site survey of the first floor immediately to validate proper implementation What statement is true about this site survey if you perform it?
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 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?
When designing for a PTP outdoor link, what important consideration should be made about local vegetation?(Choose all that apply.)
Response:
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:
You ate evaluating CO impact in 2 4 GHz. During the post-validation survey, you determine that 2 or 3 APs are seen from every location in the 2 4 GHz band with signal strengths above -75 dBm from all seen Aps. Does this show that CO has been removed from the environment given that three non-overlapping channels exist in 2.4 GHz and why?
In the enterprise, when is WPA/WPA2-Personal generally a recommended solution?(Choose all that apply.)
Response:
A business traveler from North America is in Europe. The hotel only provides coverage in 2.4 GHz. The traveler connects to the hotel's SSID and notices an AP in the hotel room.
However, the laptop reports a very low RSSI when connected. The traveler does not have the same problem when connecting in the lobby.
What would be the most likely cause of the low RSSI in the hotel room?
Response:
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?
Response:
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.)
Response:
A customer wants to deploy a WLAN that employs centralized forwarding. What LAN requirements should you look for?
Response:
When viewing channel utilization information from a protocol analyzer, if high channel utilization is occurring, what should you ensure does not exist?
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?
iPerf is a tool used in site surveys and validation surveys for what purpose?
Response:
What happens when you double the channel width (for example, use channel bonding) in a BSS?
How can you increase efficiency in an 802 11n 2.4 GHz multiple-channel architecture network?
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?
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 ________________.
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:
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?
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 strategy can be used to ensure efficient cell overlap for VoIP site surveys?
Response:
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:
Before performing a pre-deployment passive RF survey of a new deployment using survey mapping software, which of the following must be performed?
Response:
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?
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?
Who should be in the final meeting from the customer-side after successfully implementing a WLAN infrastructure?
When analyzing published competitive tests by equipment vendors, what items are the tests usually lacking?(Choose all that apply.)
Response:
A table of VLANs in a _________ document should include what device performs ________ services.(Fill in the blanks)
Response:
What are the two most common industry-standard protocols used to transport data from an AP to a Wireless LAN Controller?
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?
Which definition correctly describes the "local MAC" variation of the centralized WLAN architecture?
If radar has reportedly been detected on your WLAN deployment, what bands would you consider avoiding?
Response:
A wireless network with fewer APs at higher power levels to cover a large area is said to be which of the following?
Response:
What are some common problems with short (12 or fewer characters) ASCII passphrases in WPA/WPA2-Personal networks?
Response:
What statements are true regarding jitter and latency?(Choose all that apply.)
Response:
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:
When implementing multiple SSIDs to what is each SSID typically mapped in order to provide traffic management separately for each SSID?
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:
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:
You desire to achieve a 450 Mbps MCS. What 802.11n features (from the numbered list below) are required?
1. Frame aggregation
2. Short GI
3. 40 MHz channels
4. 2 spatial streams
5. 3 spatial streams
6. Transmit beamforming (TxBF)
You are being asked to design a WLAN for a number of WLAN clients that will use Telnet as the primary application. The customer has asked that you use only the number of APs necessary because of the complex installation and construction costs each AP installation will incur in this particular environment.
What design factors do you consider?
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:
During a customer walkthrough you notice an area of the CAD drawing where it is not accurate. What next step should you take?
Response:
A business traveler from North America is in Europe. The hotel only provides coverage in 2.4 GHz. The traveler connects to the hotel's SSID and
notices an AP in the hotel room. However, the laptop reports a very low RSSI when connected. The traveler does not have the same problem when
connecting in the lobby. What would be the most likely cause of the low RSSI in the hotel room?
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?
In a multiple channel architecture (MCA) network supporting 802.1X authentication, what aspect of WLAN design affects client roaming efficiency
and effectiveness?
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?
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 two 802.11 amendments deal with regulatory and transmission requirements?
Response:
When troubleshooting coverage issues for a wireless network as it appears to new client associations, you should perform which type of survey?
Response:
What are some advantages of designing guest access with all guest users tunneled directly into the DMZ?
Response:
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)
What are some significant drawbacks that are present with WPA/WPA2-Enterprise that are not present with WPA/WPA2-Personal?(Choose all that apply.)
Response:
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TESTED 21 Nov 2024
