Crack4sure Logo
3 Months Free Update
3 Months Free Update
3 Months Free Update
When selecting a centralized WLAN architecture, what new problem may arise when you change the data forwarding model from centralized to
distributed?
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?
iPerf is a tool used in site surveys and validation surveys for what purpose?
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:
During an RFP analysis, one of the vendors mentioned that you'll need to upgrade your Gigabit Ethernet switches to MultiGig switches to ensure
support for
802.11ac and 802.11ax, which both offer data rates over 1Gbps. Why is this not sound advice?
Location technology (RTLS) can use which of the following methods?(Choose all that apply.)
Response:
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?
What might limit the ability to locate 802.11 clients using a WLAN infrastructure without an 802.11 tag?(Choose all that apply.)
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:
What type of protection should be provided to outdoor antenna installations?
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?
What architecture suffers the biggest limitation for sharing control information across APs?
Response:
After importing a floor plan to a predictive design tool, what should be done prior to adding APs, antennas and attenuators (e.g., walls)?
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?
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:
What roaming technology uses stored keys at the APs for roam back if a client STA returns after having roamed away?
Response:
What might limit the ability to locate 802.11 clients using a WLAN infrastructure without an 802.11 tag?
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:
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:
What action should be taken after implementing a WLAN based on the design developed from the site survey process?
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?
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?
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?
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:
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?
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?
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?
What statement is true of a WLAN design that supports Real-Time Location Services (RTLS) with 802.11 RFID asset tags?
If radar has reportedly been detected on your WLAN deployment, what bands would you consider avoiding?
Response:
After deploying a 5 GHz-only WLAN infrastructure in the USA, using 20 MHz channel-widths and all 25 available channels, one of the managers of
the company brings his 802.11n tablet to the office to test the Guest SSID. While testing, therewere several spots where we would get poor RSSI
(below -80dBM) or none at all. You checked the WLAN infrastructure and all APs are up and running and you've validated coverage after
deployment. What is causing this issue?
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:
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?
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:
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?
Before performing a pre-deployment passive RF survey of a new deployment using survey mapping software, which of the following must be performed?
What advantage provided by 802.11n and 802.11ac is not usable in 1X1:1 low-end client devices?
In what circumstance would you not enable DFS channels on a WLAN infrastructure?
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?
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?
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:
Given: The 802.11ac APs you have selected for your public access deployment support many of the PHY and MAC enhancements offered by the
802.11n and
802.11ac amendments. The AP is configured for a single-band (2.4 GHz) and only allows 20 MHz channels. The WLAN radio in the AP is a 3x3
802.11n chip that supports two spatial streams.
What is the maximum MCS rate that could be supported by this AP?
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?
In the enterprise, when is WPA/WPA2-Personal generally a recommended solution?(Choose all that apply.)
Response:
A customer wants to deploy a WLAN that employs centralized forwarding. What LAN requirements should you look for?
Response:
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 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?
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?
What factors are key features when designing a guest network for a large enterprise?(Choose all that apply.)
Response:
What kind of antenna results in a nearly circular pattern on the azimuth chart but a very flat donut shape on the elevation chart?
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:
A wireless network with fewer APs at higher power levels to cover a large area is said to be which of the following?
Response:
A customer is acquiring a new VoWLAN system to replace their existing wired phone system. When reading about his system's requirements, you
learned that is requires 25 db of SNR to work as expected. After surveying the environment, you discovered that the noise floor is -88 dBm. What
should be the minimum RSSI value to meet the system's requirements?
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?
Response:
TESTED 01 May 2024