CWNA-108 Dumps CWNA-108 Braindumps
CWNA-108 Real Questions CWNA-108 Practice Test CWNA-108 Actual Questions
killexams.com
Certified Wireless Network Administrator
https://killexams.com/pass4sure/exam-detail/CWNA-108
If an RF signal is transmitted with a power of 10 dBm and has an antenna gain of 2 dBi, what is the EIRP if the cable loss is 3 dB?
A) 12 dBm
B) 15 dBm
C) 8 dBm
D) 9 dBm Answer: D
Explanation: EIRP is calculated as EIRP = Ptx + Gant −
Lcable = 10 dBm + 2 dBi − 3 dB = 9 dBm.
A radio wave travels through a vacuum and encounters a boundary
with a different medium. If the angle of incidence is 45 degrees and
the refractive index of the new medium is 1.5, what is the angle of refraction?
30 degrees
60 degrees
45 degrees
25 degrees Answer: A
Explanation: Using Snell's Law, n1 sin(θ1) = n2 sin(θ2). Thus,
sin(θ ) = 1⋅sin(45∘ )
⇒ θ2 ≈ 30∘.
In a wireless communication system, what would be the SNR in dB if the received signal is -50 dBm and the noise floor is -90 dBm?
A) 40 dB
B) 30 dB
C) 20 dB
D) 10 dB
Answer: A
Explanation: SNR is calculated as SNR = Prx − Pnoise =
−50 dBm − (−90 dBm) = 40 dB.
When considering the diffraction of RF signals, what is the primary factor that determines the extent of diffraction around an obstacle?
The size of the obstacle
The frequency of the RF signal
The power of the RF signal
The distance to the obstacle Answer: B
Explanation: The frequency of the RF signal significantly affects diffraction; lower frequency signals tend to diffract more effectively around obstacles compared to higher frequencies.
received signal strength of -40 dBm, what is the SNR if the noise floor
is -100 dBm?
A) 50 dB
B) 40 dB
C) 60 dB
D) 70 dB
Answer: C
Explanation: SNR is calculated as SNR = Prx − Pnoise =
−40 dBm − (−100 dBm) = 60 dB.
In RF communication, if an antenna's gain is 4 dBi and the effective isotropic radiated power (EIRP) is 30 dBm, what is the transmitter's output power?
A) 26 dBm
If a wireless device operates at a frequency of 5 GHz and measures a
30 dBm
34 dBm
28 dBm
Answer: A
Explanation: The output power can be calculated as Ptx =
EIRP − Gant = 30 dBm − 4 dBi = 26 dBm.
A signal experiences a loss of 15 dB while traveling through a medium. If the original signal strength is 25 dBm, what is the strength of the signal after the loss?
A) 20 dBm
B) 5 dBm
C) 15 dBm
D) 10 dBm
Answer: D
Explanation: The received signal strength is calculated as
Preceived = Pinitial − L = 25 dBm − 15 dB = 10 dBm.
A network engineer is tasked with implementing a WLAN that includes Ruckus access points and Ubiquiti devices. Which proprietary protocol should the engineer consider to enable effective load balancing among the access points?
ckus SmartLoad
co Load Balancing Protocol uba Load Balancing System
er: B
nation: Ruckus SmartLoad is a proprietary feature designed to optimize load balancing amon points, ensuring efficient distribution of client connections.
pany is planning to implement a wireless LAN in a large conference room. They are consid ceiling-mounted omnidirectional antenna. What is the primary benefit of using this type of in such an environment?
cused signal distribution
ter signal penetration through walls reased interference rejection
0-degree coverage er: D
nation: An omnidirectional antenna provides 360-degree coverage, making it suitable for
Ubiquiti AirMax Ru Cis Ar Answ Expla g access A com ering using a antenna Fo Bet Inc 36 Answ Expla environments like conference rooms where users may be located in various positions. When implementing a WLAN that includes Cisco and Ruckus access points, which feature allows for automatic adjustments to the RF environment based on client behavior? Dynamic Frequency Selection (DFS) Adaptive Radio Management (ARM) Smart Channel Selection Client Steering Answer: B Explanation: Adaptive Radio Management (ARM) automatically adjusts RF settings based on client behavior and environmental conditions, optimizing performance across multiple vendors. eless vendor is developing a new product for the European market that will operate in the 2.4 hat is one key requirement they must adhere to regarding the device's power output? st not exceed 1000 mW EIRP. st only operate with directional antennas. st comply with the ETSI power limits of 20 dBm. st allow for dynamic power adjustments based on signal quality. er: C nation: In Europe, under ETSI regulations, devices operating in the 2.4 GHz band must not e er output of 20 dBm (100 mW) EIRP. ne a scenario where a company has deployed both autonomous and controller-based access p the same network. Which of the following challenges is most likely to arise from this mixe ment? ficulties in network-wide policy enforcement reased latency due to cloud management Quest A wir GHz band. W Mu Mu Mu Mu Answ Expla xceed a pow Imagi oints within d deploy Dif Inc Enhanced load balancing across all APs Simplified client device connection processes Answer: A Explanation: A mixed deployment of autonomous and controller-based access points can lead to inconsistencies in policy enforcement, complicating network management and client experience. When deploying a wireless repeater in a network, which factor is most important to consider in order to minimize the potential for performance degradation due to increased latency? The type of encryption used in the network. The physical distance from the Access Point to the repeater. The number of client devices connected to the repeater. nation: The physical distance from the Access Point to the repeater is crucial because greater ces can lead to weaker signals and increased latency, negatively impacting overall network mance. enario where client devices are experiencing poor roaming performance between Ruckus an iti access points, which of the following features could improve the situation? iquiti SmartMesh co CleanAir uba ClientMatch ckus ChannelFly er: D nation: Ruckus ChannelFly dynamically selects the best channel for access points to reduce rence and improve client performance, which can help enhance roaming capabilities. Expla distan perfor In a sc d Ubiqu Ub Cis Ar Ru Answ Expla interfe What is the maximum number of non-overlapping channels available for 802.11ac in the 5 GHz band when using standard channel widths? 4 8 24 12 Answer: C Explanation: There are up to 24 non-overlapping channels in the 5 GHz band for 802.11ac when using standard channel widths. 2.11ax .11n .11ac 2.11g er: A nation: 802.11ax, also known as Wi-Fi 6, is designed to handle high-density environments w features like OFDMA and improved MU-MIMO, allowing for better throughput and lower latency red to previous standards. re tasked with ensuring the security of a corporate WLAN. During a routine audit, you disco ccess point that mimics your legitimate SSID. What is the most effective method to preven onnecting to this rogue device? plement MAC address filtering on the legitimate APs ploy Wireless Intrusion Prevention Systems (WIPS) to automatically disconnect rogue APs rease the transmit power of legitimate APs to overpower the rogue signal ucate users to avoid connecting to unknown networks 80 802 802 80 Answ Expla ith compa You a ver a rogue a t users from c Im De Inc Ed Answer: B Explanation: Deploying a Wireless Intrusion Prevention System (WIPS) can actively detect and mitigate rogue access points by automatically disconnecting them from the network, providing a more robust solution than user education or MAC filtering. In designing a WLAN for a high-density environment such as a stadium, which of the following considerations is most critical to ensure both capacity and coverage are adequately addressed? Deploying APs with omnidirectional antennas only Selecting a 2.4 GHz band exclusively to maximize coverage Using a combination of 2.4 GHz and 5 GHz APs while implementing load balancing Placing APs in corners of the venue to minimize interference Answer: C alancing helps distribute client connections effectively. onfiguring a captive portal, what user experience feature can significantly enhance guest ction while maintaining security? User-friendly interface and clear instructions mediate access without authentication mplex login procedures mited access to only a few websites er: A nation: A user-friendly interface with clear instructions greatly enhances guest satisfaction by fying the connection process while maintaining necessary security measures. pany is transitioning to a new wireless security protocol. What is one of the key features of fferentiates it from WPA2 in terms of user experience? When c satisfa A. Im Co Li Answ Expla simpli A com WPA3 that di WPA3 requires all devices to support 802.1X. WPA3 does not support legacy devices. WPA3 eliminates the need for encryption altogether. WPA3 provides a simplified setup process for new devices. Answer: D Explanation: WPA3 offers a simplified setup process for new devices, making it easier for users to connect securely without compromising security, improving the overall user experience compared to WPA2. In the context of WLAN design, what is the primary reason for utilizing a heatmap to visualize signal strength across a surveyed area? etermine the number of clients connected to each AP dentify potential dead zones and areas of weak signal alculate the total bandwidth used by the network er: C nation: Heatmaps help visualize areas with strong and weak signals, allowing designers to id ones that require additional coverage. onfiguring a WIDS (Wireless Intrusion Detection System), which of the following paramet for detecting rogue APs? D broadcasting SI thresholds annel utilization EAP types er: B nation: RSSI thresholds are vital for WIDS to accurately determine the strength of signals fro APs and identify any unauthorized or rogue devices in the network.Quest
Question: 638
ion: 639
ion: 640
Quest
Question: 641
ion: 642
ion: 643
Quest
Quest
Question: 644
ion: 645
Quest
Question: 646
ion: 647
ion: 648
Quest
Quest
Question: 649
ion: 650