[2023年07月16日] 合格率取得する秘訣はCWNA-108認定試験エンジンPDF
CWNA-108試験問題集合格できるには更新された2023年07月テスト問題集
質問 # 66
What factor is likely to cause the least impact on the application layer throughput of an 802.11n client station in a 2.4 GHz HT BSS?
- A. RF interference from more than 10 nearby Bluetooth transmitters
- B. Implementation Fast BSS Transition (FT) for roaming
- C. Implementation of several other clients in the same BSS using 802.11g radios.
- D. Increasing or decreasing the number of spatial streams in use by the client station and AP
正解：C
質問 # 67
Which data rate is supported by 802.11g radios that is not supported by 802.11a radios?
- A. 9 Mbps
- B. 11 Mbps
- C. 12 Mbps
- D. 130 Mbps
- E. 65 Mbps
- F. 54 Mbps
正解：B
質問 # 68
The center frequency of channel 1 in the 2.4 GHz band is 2.412 GHz (2412 MHz). What is the center frequency of channel 4?
- A. 2.427
- B. 2.413
- C. 2.422
- D. 2.417
正解：A
質問 # 69
You are deploying a WLAN with the access points configured for 10 mW of output power on the 2.4 GHz radios and 20 mW of output power on the 5GHz radios. Some semi-directional antennas are also in use. What kind of deployment is described?
- A. Standard office
- B. SOHO
- C. Residential
- D. High density
正解：B
質問 # 70
You are troubleshooting a client problem with a 2.4 GHz WLAN connection. The client is experiencing surprisingly low data rates during the work day. You analyze the workspace outside of business hours and detect a strong signal with a typical noise floor at the client location. During working hours, the user works with a laptop in the area and uses an external USB hard drive for continuous data access. The user also states that the laptop works as expected on her home network. The user working approximately 8 feet away from this client experiences no problems.
Based on this information, what is the likely cause of the problem?
- A. The external hard drive is USB 3.0 and is causing a significant increase in the noise floor when in use
- B. The AP is overloaded during the work day
- C. The drivers in the laptop are corrupt
- D. The laptop has a failing wireless adapter
正解：A
質問 # 71
You are troubleshooting an issue reported by several wireless user. The problem is contained to one cell (several users connected to the same AP. You manage the WLAN and no other network devices. After analysis it appear to be a switch problem. What action should be taken?
- A. Escalate the problem to the wireless vendor support staff
- B. Create a plan of action and implement it
- C. Escalate the problems to the network administration Learn
- D. Document the results and close the case
正解：C
質問 # 72
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?
- A. Laptop based spectrum analyzers
- B. AP-based spectrum analysis
- C. laptop-based protocol analyzers
- D. Overlay WLAN monitoring solution
正解：B
質問 # 73
You are troubleshooting a client issue on a Windows laptop. The laptop can see and connect to 2.4 GHz APs, but is does not even see 5 GHz APs. While evaluating the issue, you determine that this problem is happening for all of the laptops of this model in the organization. Several other tablets connect on channel 48 and channel
52 in the same work areas. What is the likely problem?
- A. The client drivers are faulty and should be upgraded.
- B. The antennas in the laptop have insufficient gain to detect the 5 GHz signals.
- C. The access points are configured to disallow 5 GHz.
- D. The clients are configured to use WPA and 5 GHz channels only support WPA2.
正解：B
解説：
Explanation/Reference:
質問 # 74
When a client moves to a new BSS within an ESS, what step is a part of the 802.11 reassociation process?
- A. The new access point transmits a Reassociation Response to the client station with a status value.
- B. The client station transmits a Reassociation Request frame to its currentaccess point.
- C. The current access point triggers the client's reassociation service.
- D. The current access point informs the IP gateway of the reassociation.
正解：A
質問 # 75
ABC Company has thousands of Wi-Fi users accessing their network on a daily basis. Their WLAN consists of 700 access points, 6 WLAN controllers, and a wireless network management system.
What network functions are performed by the enterprise-class WNMS?
- A. Generating, encrypting, and decrypting 802.11 frames and collecting RF radio data.
- B. Centralized bridging of guest data traffic and application of firewall and QoS policies to data
- C. Management of WLAN controller configuration and provisioning of firmware updates
- D. Radio management, fast roaming, key caching, and other centralized control plane operations
正解：C
質問 # 76
As a consultant, you've been hired by XYZ Company to provide recommendations about client device selection, operation, and interoperability. What information should be considered to help them choose the right WLAN client devices?
- A. 802.11ac devices support the features of the VHT PHY only in the 5 GHz frequency band.
- B. 802.11ac is not backwardly compatible with 802.11n or 802.11a.
- C. 802.11n OFDM is more susceptible to high-power, narrowband interference than 802.11a
- D. When HR/DSSS devices are present, VHT MCS rates are disabled for the entire BSS.
- E. In order to earn Wi-Fi Alliance certification, 802.11n clients stations are required to support both
2.4 and 5 GHz frequencies
正解：A
質問 # 77
You are reporting on the RF environment in you facility. The manager asks you do describe the noise floor noted in the report. Which of the following is the best explanation?
- A. 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.
- B. The extra energy radiated by access points and clint devices beyond that intended for the signal.
- C. The energy radiated by flooring materials that causes interference in the 2.4 GHz and 5 GHz bands.
- D. The noise caused elevators, microwave ovens, and video transmitters.
正解：A
質問 # 78
In an 802.11 2.4 GHz system, what 22 MHz channels are considered non-overlapping?
- A. 4 and 6
- B. 1 and 5
- C. 2 and 8
- D. 7 and 11
正解：A
質問 # 79
A non-802.11 device is suspected of causing interference on the WLAN. You are not certain of the location or type of device. What is the best solution for locating this non-802.11 device?
- A. Laptop-based protocol analyzer with an omni-directional antenna
- B. Laptop-based spectrum analyzer with a directional antenna
- C. Access point spectrum analyzer
- D. Laptop-based spectrum analyzer with an omni-directional antenna
正解：C
質問 # 80
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 for voice over Wi-Fi. what is an action that must be performed?
- A. Application analysis with an active phone call on a VoWiFi handset
- B. Protocol analysis to discover channel use on neighboring APs
- C. Spectrum analysis to locate and identity RF Interference sources
- D. Frequency-band hopping analysis to detect improper RF channel implementations
正解：C
質問 # 81
You are troubleshooting a controller-based AP that is unable to locate the controller. DHCP is not use and the controller is located at 10.10.10.81/24 while the AP is on the 10.10.16.0/24 network. What should be inspected to verify proper configuration?
- A. DBS
- B. BOOTP
- C. AP hosts file
- D. NTP
正解：C
質問 # 82
What statement about 802.11 WLAN performance is true?
- A. WLANs perform better as more wireless clients connect with each AP
- B. In most WLANs, no special skill or tuning is required to get peak performance
- C. In modern networks, both centralized and distributed data forwarding work well for most standard office deployments
- D. To get the best performance out of an AP, you should disable data rates of 72 Mbps and lower
正解：D
質問 # 83
What security solution is deprecated in the 802.11 standard and should never be used in any modern WLAN deployment?
- A. CCMP
- B. Shared Key Authentication
- C. Open System Authentication
- D. AES
正解：B
解説：
Explanation
質問 # 84
In a mesh BSS (MBSS), according to the 802.11-2016 standard, what device connect the mesh to an Ethernet network?
- A. Mesh Gate
- B. Mesh Portal
- C. Mesh Router
- D. Mesh Switch
正解：A
質問 # 85
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CWNA-108テスト問題練習は2023年最新のに更新された178問あります：https://jp.fast2test.com/CWNA-108-premium-file.html
更新されたプレミアムCWNA-108試験エンジンPDF：https://drive.google.com/open?id=1EsTPikvSPaCcChfLH4bIZk8sRuKmVeUy