[Q28-Q44] Tested Material Used To CWNA-108 Test Engine Exam Questions in here [Jun-2024]

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Tested Material Used To CWNA-108 Test Engine Exam Questions in here [Jun-2024]

Penetration testers simulate CWNA-108 exam PDF

CWNP CWNA-108 certification exam is recognized globally and has become a benchmark for wireless networking professionals. CWNP Certified Wireless Network Administrator Exam certification provides a validation of an individual’s knowledge and skills, which can be leveraged to advance their career in wireless networking. CWNP Certified Wireless Network Administrator Exam certification exam also provides access to a community of like-minded professionals who share knowledge, ideas, and best practices in wireless networking.

NO.28 In an 802.11 2.4 GHz system, what 22 MHz channels are considered non-overlapping?

7 and 11

2 and 8

1 and 5

4 and 6

NO.29 Which one of the following 802.11 PHYs is more likely to be used in an industrial deployment but not likely to be used in standard office deployments?

S1G

VHT

OFDM

NO.30 In which plane of the three networking planes is an access point configured by a WLAN controlled?

Control

Management

Security

Data

NO.31 What statement about 802.11 WLAN bridges is true?

WLAN bridges only work in the 2.4 GHz frequency band and they support only SISO communications

WLAN bridges must use a channel with acceptable SNR at both transceivers to maintain the desired data rate bi-directionally

WLAN bridges may support MIMO communications, but only if used in the 5 GHz frequency band

WLAN bridges must be implemented such that no interference occurs on the channel anywhere between the two endpoints used to establish the bridge

NO.32 Which directional antenna types are commonly used by indoor Wi-Fi devices in a MIMO multiple spatial stream implementation?

Dipole and yagi

Grid and sector

Patch and panel

Dish and grid

NO.33 You are a small business wireless network consultant and provide WLAN services for various companies. You receive a call from one of your customers stating that their laptop computers suddenly started experiencing much slower data transfers while connected to the WLAN. This company is located in a multi-tenant office building and the WLAN was designed to support laptops, tablets and mobile phones. What could cause a sudden change in performance for the laptop computers?

The sky was not as cloudy that day as it typically is and the sun also radiates electromagnetic waves.

A new tenant in the building has set their AP to the same RF channel that your customer is using.

The antennas in the laptops have been repositioned.

A few of your customer’s users have Bluetooth enabled wireless headsets.

NO.34 As an RF wave propagates through space, the wave front experiences natural expansion that reduces its signal strength in an area. What describes the rate at which this expansion happens?

Fresnel zone thinning

Ohm’s law

Inverse square law

MU-MIMO

NO.35 What primary metric of scanning can stations use to select the best AP for connectivity to the desired BSS?

Signal strength of AP beacons received.

PING latency when testing against an Internet server.

Throughput speed in Mbps.

FCS errors in frames transmitted to and from the AP.

NO.36 What is appended to the end of each 802.11 data frame after the payload?

Preamble

MAC header

PHY header

FCS

NO.37 You are tasked with performing a throughput test on the WLAN. The manager asks that you use open source tools to reduce costs. What open source tool is designed to perform a throughput test?

iPerf

PuTTy

IxChariot

Python

NO.38 A WLAN transmitter that emits a 50 mW signal is connected to a cable with 3 dB loss.
If the cable is connected to an antenna with 9 dBi gain, what is the EIRP at the antenna element?

23 dBm

26 dBm

13 dBm

10 dBm

NO.39 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?

Laptop-based spectrum analyzers

AP-based spectrum analysis

Overlay WLAN monitoring solution

Laptop-based protocol analyzers

NO.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 client STAs

Authentication frames transmitted by the other client STAs

Probe request frames transmitted by other client STAs

NO.41 ABC Company is planning to install a new 802.11ac WLAN, but wants to upgrade its wired infrastructure first to provide the best user experience possible. ABC Company has hired you to perform the RF site survey. During the interview with the network manager, you are told that the new Ethernet edge switches will support VoIP phones and 802.11 access points, both using
802.3 PoE.
After hearing this information, what immediate concerns do you note?

The power budget in the edge switches must be carefully planned and monitored based on the number of supported PoE devices.

The edge Ethernet switches should support Ether-channel to get the best results out of the network.

VoIP phones and 802.11 access points should not be powered by the same edge switch due to distortion.

If the switches are in optimal locations for VoIP phones, they are likely to be suboptimal locations for 802.11 APs

NO.42 What information is transmitted in the Beacon management frames of an HT access point to communicate about backward compatibility with ERP and HR/DSSS stations? (Choose 2)

HT Protection mode

Non-ERP Present field

Secondary channel offset

RIFS mode

Power save mode of clients

NO.43 What is required when operating 802.11ax APS in the 6 GHz band using passphrase-based authentication?
* VHT PHY

HT PHY

SAE

CCMP

Explanation
SAE (Simultaneous Authentication of Equals) is required when operating 802.11ax APs in the 6 GHz band using passphrase-based authentication. SAE is a secure and robust authentication method that is defined in the IEEE 802.11s amendment and is also known as WPA3-Personal or WPA3-SAE. SAE is based on a cryptographic technique called Dragonfly Key Exchange, which allows two parties to establish a shared secret key using a passphrase, without revealing the passphrase or the key to an eavesdropper or an attacker. SAE also provides forward secrecy, which means that if the passphrase or the key is compromised in the future, it does not affect the security of past communications.
SAE is required when operating 802.11ax APs in the 6 GHz band using passphrase-based authentication because of the new regulations and standards that apply to this band. The 6 GHz band is a new frequency band that was opened for unlicensed use by the FCC and other regulatory bodies in 2020. The 6 GHz band offers more spectrum and less interference than the existing 2.4 GHz and 5 GHz bands, which can enable higher performance and efficiency for Wi-Fi devices. However, the 6 GHz band also has some restrictions and requirements that are different from the other bands, such as:
* The 6 GHz band is divided into two sub-bands: U-NII-5 (5925-6425 MHz) and U-NII-7 (6525-6875 MHz). The U-NII-5 sub-band is subject to DFS (Dynamic Frequency Selection) rules, which require Wi-Fi devices to monitor and avoid using channels that are occupied by radar systems or other primary users. The U-NII-7 sub-band is not subject to DFS rules, but it has a lower maximum transmit power limit than the U-NII-5 sub-band.
* The Wi-Fi devices that operate in the 6 GHz band are called 6E devices, which stands for Extended Spectrum. 6E devices must support 802.11ax technology, which is also known as Wi-Fi 6 or High Efficiency (HE). 802.11ax is a new standard that improves the performance and efficiency of Wi-Fi networks by using features such as OFDMA (Orthogonal Frequency Division Multiple Access), MU-MIMO (Multi-User Multiple Input Multiple Output), BSS Coloring, TWT (Target Wake Time), and HE PHY and MAC enhancements.
* The 6E devices that operate in the 6 GHz band must also support WPA3 security, which is a new security protocol that replaces WPA2 and provides stronger encryption and authentication for Wi-Fi networks. WPA3 has two modes: WPA3-Personal and WPA3-Enterprise. WPA3-Personal uses SAE as its authentication method, which requires a passphrase to establish a secure connection between two devices. WPA3-Enterprise uses EAP (Extensible Authentication Protocol) as its authentication method, which requires a certificate or a credential to authenticate with a server.
Therefore, SAE is required when operating 802.11ax APs in the 6 GHz band using passphrase-based authentication because it is part of WPA3-Personal security, which is mandatory for 6E devices in this band.
References: , Chapter 3, page 120; , Section 3.2
9of30

NO.44 In an 802.11 2.4 GHz system, what 22 MHz channels are considered non-overlapping?

7 and 11

2 and 8

1 and 5

4 and 6

The CWNA-108 exam is a vendor-neutral certification that covers the key aspects of wireless networking, including RF technologies, wireless LAN hardware and software, network architecture, security, and troubleshooting. CWNP Certified Wireless Network Administrator Exam certification exam is designed to provide a solid foundation for wireless network administrators, technicians, and engineers. CWNA-108 exam is also suitable for professionals who work in IT support roles and want to enhance their knowledge of wireless networking.

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