[2022年更新]CWNA-108はCWNA Certificationリアルな無料試験練習テスト
無料CWNA Certification CWNA-108試験問題を提供します
CWNP CWNA-108 認定試験の出題範囲：
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質問 39
What non-standard WLAN solution attempts to give a longer transmission windows to devices with higher data rates then devise with lower data rates?
- A. Band Steering
- B. AirTime Fairness
- C. ARM
- D. RRM
正解: B
質問 40
What standard is referenced into the 802.11-2012 specification and is recommend for robust WLAN client security?
- A. 802.1X/EAP
- B. WEP
- C. SSID hiding
- D. IPSec VPN
正解: A
質問 41
You manage a WLAN with 100 802.11ac access points. All access points are configured to use 80 MHz channels. In a particular BSS, only 40 MHz communications are seen. What is the likely cause of this behavior?
- A. The AP is improperly configured to use only 40 MHz of the 80 MHz allocated bandwidth
- B. All clients implement single spatial stream radios
- C. The clients are all 802.11n STAs or lower
- D. The short guard interval is also enabled
正解: C
質問 42
A client complains of low data rates on his computer. When you evaluate the situation, you see that the signal strength is -84 dBm and the noise floor is -96 dBm. The client is an 802.11ac client and connects to an 802.11acAP. Both the client and AP are 2x2:2 devices.
What is the likely cause of the low data rate issue?
- A. Weak signal strength
- B. Lack of support for 802.11n
- C. Too few spatial streams
- D. CAT5e cabling run to the AP
正解: A
質問 43
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?
- A. Create a plan of action or escalate the problem
- B. Verify the solution
- C. Perform corrective actions
- D. Discover the scale of the problem
正解: D
質問 44
As XYZ Company's wireless specialist, you have been asked to troubleshoot some unexpected frame patterns in a wireless protocol capture. Your peers explain that the network's beacon frames are inconsistent. That is, the BSSID is the same for all beacons, but the source address varies between three different addresses.
What network configuration would cause this beacon frame behavior?
- A. Three APs still share the same default configuration.
- B. A single AP supports multiple BSSs with different SSIDs
- C. The beacons are from an IBSS instead of a BSS
- D. A virtual cell single channel network has been implemented
正解: C
質問 45
What standard is referenced in the 802.11-2016 specification and is recommended for robust WLAN client security?
- A. 802.1X/EAP
- B. WEP
- C. SSID hiding
- D. IPSec VPN
正解: A
質問 46
What statement about the beamwidth of an RF antenna is true?
- A. Vertical beamwidth is displayed (in degrees) on the antenna's Azimuth chart.
- B. When antenna gain is lower, the beamwidth is also lower in both the horizontal and vertical dimensions.
- C. The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.
- D. Horizontal and vertical beamwidth are calculated at the points where the main lobe decreases power by 3 dB.
正解: D
質問 47
In addition to throughput enhancements, what other improvements does a dual-band 802.11ac AP provide when compared with 802.11a/g APs? (Choose 2)
- A. Increases in receive sensitivity enhance RTLS location accuracy
- B. Introduces "fast transition" roaming protocols for VoWiFi phones
- C. Improves service quality for real-time applications at greater distances
- D. Stronger security with more robust encryption modes.
- E. Better link reliability between 802.11a/b/g client devices and 802.11ac APs
正解: C,E
質問 48
What is a channel mode specified by the 802.11n (High Throughput) PHY?
- A. 20/40 MHz
- B. Frequency Hopping
- C. 80 MHz
- D. 22 MHz
正解: A
質問 49
An 802.11-based network uses an AP and has several connecting clients. The clients include iPhones, iPads, laptops and one desktop. What WLAN use case is represented?
- A. WPAN
- B. IBSS
- C. BSS
- D. Ad-hoc
正解: C
解説:
Explanation/Reference:
質問 50
As you prepare for a site survey in a multi-floor corporate office, you have learned about several wireless devices that support connection-oriented, real-time applications. These applications are sensitive to service interruptions and require excellent signal quality, low latency, and low loss.
For that reason, it is important to identify sources of RF interference as well as building characteristics that would cause RF blockage or dead spots.
What systems or environmental characteristics are most likely to cause interference or RF blockage and disrupt service for these applications? (Choose 2)
- A. RFID chokepoints
- B. Narrow hallways
- C. Workspace dividers
- D. Elevator shafts
- E. Microwave ovens
正解: D,E
質問 51
What term correctly completes the following sentence?
802.11a/b/g used a mandatory 800ns guard interval. 802.11n introduced an optional short 400ns guard interval. Guard intervals (GI) are necessary in OFDM to reduce the likelihood of interference between two consecutive ____________.
- A. Segments
- B. Symbols
- C. Frames
- D. Bytes
- E. Bits
- F. Packets
正解: B
質問 52
As an RF wave propagates through space, the wave front experiences natural expansion that reduces its signal strength in an area. What term describes the rate at which this expansion happens?
- A. Ohm's law
- B. Inverse square law
- C. Fresnel zone thinning
- D. MU-MIMO
正解: B
質問 53
In a long-distance RF link, what statement about Fade Margin is true?
- A. A Fade Margin is unnecessary on a long-distance RF link if more than 80% of the first Fresnelzone is clear of obstructions.
- B. The Fade Margin is a measurement of signal loss through free space, and is a function of frequency and distance.
- C. The Fade Margin of a long-distance radio link should be equivalent to the receiver's antenna gain.
- D. Fade Margin is an additional pad of signal strength designed into theRF system to compensate for unpredictable signal fading.
正解: D
質問 54
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CWNP CWNA-108リアルな問題と知能問題集：https://www.goshiken.com/CWNP/CWNA-108-mondaishu.html
CWNA-108問題集でCWNA Certification高確率練習問題集：https://drive.google.com/open?id=1_kbWNM2nkgrE-Z_fRUuuiqL6ykocf83w