You are reporting on the RF environment in your facility. The manager asks you to describe the noise floor noted in the report. Which of the following is the best explanation?

The RF energy that exists in the environment from intentional and unintentional RF radiators that forms the baseline above which the intentional signal of your WLAN must exist.

The noise caused by elevators, microwave ovens, and video transmitters.

The extra energy radiated by access points and client devices beyond that intended for the signal.

The energy radiated by flooring materials that causes interference in the 2.4 GHz and 5 GHz bands.

The RF energy that exists in the environment from intentional and unintentional RF radiators that forms the baseline above which the intentional signal of your WLAN must exist.

Lynne runs a small hotel, and as a value added service for his customers he has implemented a Wi-Fi hot-spot. Lynne has read news articles about how hackers wait at hot-spots trying to take advantage of unsuspecting users. He wants to avoid this problem at his hotel.What is an efficient and practical step that Lynne can take to decrease the likelihood of active attacks on his customers' wireless computers?

Enable station-to-station traffic blocking by the access points in the hotel.

Implement Network Access Control (NAC) and require antivirus and firewall software along with OS patches.

Implement an SSL VPN in the WLAN controller that initiates after HTTPS login.

Require EAP-FAST authentication and provide customers with a username/password on their receipt.

You have received a report of poor wireless connections on the third floor of a building under your administration. Three individuals have reported the problem. Apparently, the connections are reporting a strong signal, but the users cannot access the Internet. With the problem identified, what is the next logical step in the troubleshooting process?

Discover the scale of the problem

Create a plan of action or escalate the problem

What is the final step in an effective troubleshooting process?

Notify the users of problem resolution

Your manager asked you to locate a solution that allows for centralized monitoring of WLAN performance over time. He wants a single pane of glass for administration and monitoring of the solution. What do you recommend?

Overlay WLAN monitoring solution

Laptop-based spectrum analyzers

Overlay WLAN monitoring solution

Laptop-based protocol analyzers

You were previously onsite at XYZ's facility to conduct a pre-deployment RF site survey. The WLAN has been deployed according to your recommendations and you are onsite again to perform a post-deployment validation survey.When performing this type of post-deployment RF site survey voice over Wi-Fi, what is an action that must be performed?

Application analysis with an active phone call on an VoWiFi handset.

Spectrum analysis to locate and identify RF interference sources.

Frequency-band hopping analysis to detect improper RF channel implementations.

Application analysis with an active phone call on an VoWiFi handset.

Protocol analysis to discover channel use on neighboring APs.

When a STA has authenticated to an AP (AP-1), but still maintains a connection with another AP (AP-2), what is the state of the STA on AP-1?

Unauthenticated and Unassociated

What can an impedance mismatch in the RF cables and connectors cause?

Increased range of the RF signal

Fewer MCS values in the MCS table

Increased amplitude of the RF signal

What factor does not influence the distance at which an RF signal can be effectively received?

Receiving station's output power

Receiving station's radio sensitivity

Receiving station's output power

Transmitting station's output power

In a long-distance RF link, what statement about Fade Margin is true?

Fade Margin is an additional pad of signal strength designed into the RF system to compensate for unpredictable signal fading.

A Fade Margin is unnecessary on a long-distance RF link if more than 80% of the first Fresnel zone is clear of obstructions.

The Fade Margin is a measurement of signal loss through free space and is a function of frequency and distance.

Fade Margin is an additional pad of signal strength designed into the RF system to compensate for unpredictable signal fading.

The Fade Margin of a long-distance radio link should be equivalent to the receiver's low noise filter gain.

What statement about the beamwidth of an RF antenna is true?

Horizontal and vertical beamwidth are calculated at the points where the main lobe decreases power by 3 dB.

The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.

When antenna gain is lower, the beamwidth is also lower in both the horizontal and vertical dimensions.

Vertical beamwidth is displayed (in degrees) on the antenna's Azimuth chart.

Which one of the following is not a factor considered when calculating the Link Budget for an outdoor point-to- point WLAN bridge link?

MU-MIMO capabilities of the bridges

What statement is true concerning the use of Orthogonal Frequency Division Multiplexing (OFDM) modulation method in IEEE 802.11 WLANs?

OFDM was first introduced in 802.11a and is used by the ERP, HT and VHT PHYs as well.

OFDM implements BPSK modulation to allow for data rates up to 7 Gbps.

OFDM was first introduced in 802.11a and is used by the ERP, HT and VHT PHYs as well.

OFDM modulation is used only in 5 GHz 802.11 transmissions.

OFDM was used by Frequency Hopping Spread Spectrum (FHSS) PHY devices.

What is always required to establish a high quality 2.4 GHz RF link at a distance of 3 miles (5 kilometers)?

A Fresnel Zone that is at least 60% clear of obstructions

Minimum output power level of 2 W

A minimum antenna gain of 11 dBi at both endpoints

A Fresnel Zone that is at least 60% clear of obstructions

What statement about 802.3, Clause 33 Power over Ethernet is true?

The lowest voltage drop is achieved when using CAT6 cable instead of Cat5 or CAT5e.

When using CAT5 cabling, you increase the maximum draw available to the PD over that available with CAT6.

Only endpoint PSEs are supported.

Only midspan PSEs are supported.

The lowest voltage drop is achieved when using CAT6 cable instead of Cat5 or CAT5e.

What statement describes the authorization component of a AAA implementation?

Granting access to specific network services or resources according to a user profile.

Verifying that a user is who he says he is.

Implementing a WIPS as a full-time monitoring solution to enforce policies.

Granting access to specific network services or resources according to a user profile.

Validating client device credentials against a database.

CWNP CWNA-109 Practice Test 1 - Free Online Exam Questions 1-40

Question 1 / 40

A client STA must choose the best AP for connectivity. As part of the evaluation, it must verify compatible data rates. What can the client STA use to verify that an AP supports the same data rates that it supports?

Beacon frames transmitted by the AP

Data frames sent between the AP and current clients STAs

Authentication frames transmitted by the other client STAs

Probe request frames transmitted by other client STAs

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CWNP CWNA-109 Practice Test 1

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