CWNP CWNA-108豪華セット学習ガイドにはオンライン試験エンジン
CWNA-108問題集レビュー専門クイズ学習材料
CWNP CWNA-108 認定試験の出題範囲：
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質問 26
During a post-implementation survey, you have detected a non-802.11 wireless device transmitting in the area used by handheld 802.11g scanners. What is the most important factor in determining the impact of this non-802.11 device?
- A. Receive sensitivity
- B. Protocols utilized
- C. Channel occupied
- D. Airtime utilization
正解: D
解説:
Airtime Utilization is a per-channel statistic that defines what percentage of the channel is currently being used, and what percentage is therefore free. Airtime usage can come from: Data traffic to and from client devices. Interference from WiFi and non-WiFi sources. Management overhead from APs and client devices. https://wyebot.com/2019/06/06/understanding-airtime-utilization/
質問 27
You are using a tool that allows you to see signal strength for all Aps in the area with a visual representation. It shows you SSIDs available and the security settings for each SSID. It allows you to filter by frequency band to see only 2.4 GHz networks or only 5 GHz networks. No additional features are available.
What kind of application is described?
- A. Site survey utility
- B. Spectrum analyzer
- C. Protocol analyzer
- D. WLAN scanner tool
正解: D
質問 28
What is an advantage of using WPA2-Personal instead of WEP-128 as a security solution for
802.11 networks?
- A. WPA2-Personal uses CCMP for encryption, and WEP-128 uses TKIP for encryption
- B. WPA2-Personal uses 802.1X/EAP for authentication, and WEP-128 uses preshared keys
- C. WPA2-Personal uses dynamic encryption keys, and WEP-128 uses static keys
- D. WPA2-Personal is based on IEEE 802.11 industry standards, but WEP is not
正解: C
質問 29
What wireless networking term describe the increase of RF energy in an intentional direction with the use of an antenna?
- A. Active Amplification
- B. Passive Gain
- C. Directed Radiation
- D. Beam Digression
正解: B
質問 30
What statement is true concerning the use of Orthogonal Frequency Division Multiplexing (OFDM) modulation method in IEEE 802.11 WLANs?
- A. OFDM modulation is used only in 5 GHz 802. 11 transmissions.
- B. OFDM was used by Frequency Hopping Spread Spectrum (FHSS) PHY devices.
- C. OFDM implements BPSK modulation to allow for data rates up to 7 Gbps.
- D. OFDM was first introduced in 802. 11a and is used by the ERP, HT and VHT PHYs as well
正解: A
質問 31
Which unit of measurement is an absolute unit that is used to quantify received signal power levels on a logarithmic scale?
- A. RSSI
- B. VSWR
- C. dBm
- D. SNR
正解: C
質問 32
When performing a validation survey for a Multiple Channel Architecture (MCA) system in a multi- tenant building with five floors, what aspect should you, as the surveyor, keep in mind?
- A. The RF interference caused by passing airplanes supporting on-board Wi-Fi should be a prime consideration
- B. The channel reuse pattern should be three dimensional with the RF cell extending coverage of each access point to other floors
- C. The Fresnel Zone is completely blocked between floors so each floor is considered a separate site survey
- D. The omni-directional antennas of the access points should be oriented parallel to the floor to maximize the coverage pattern across as many floors as possible
正解: B
質問 33
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. Introduces "fast transition" roaming protocols for VoWiFi phones
- B. Stronger security with more robust encryption modes.
- C. Better link reliability between 802.11a/b/g client devices and 802.11ac APs
- D. Increases in receive sensitivity enhance RTLS location accuracy
- E. Improves service quality for real-time applications at greater distances
正解: C,E
質問 34
Which directional antenna types are commonly used by indoor Wi-Fi devices in a MIMO multiple spatial stream implementation?
- A. Dipole and yagi
- B. Dish and grid
- C. Grid and sector
- D. Patch and panel
正解: D
質問 35
What wireless networking term describes the increase of RF energy in an intentional direction with the use of an antenna?
- A. Active Amplification
- B. Passive Gain
- C. Directed Radiation
- D. Beam Digression
正解: B
質問 36
A dual-band 802.11ac AP must be powered by PoE. As a class 4 device, what power level should be received at the AP?
- A. 30 W
- B. 12.95 W
- C. 15.4 W
- D. 25.5 W
正解: D
質問 37
Three access points are used within a facility. One access point is on channel 11 and the other two are on channel 1. The two access points using channel 1 are on either side of the access point using channel 11 and sufficiently apart so that they do not interfere each other when they transmit frames. Assuming no other Aps are in the vicinity, is CCI still a possibility in this network and why?
- A. No, because the Aps are far enough apart that no CCI will occur
- B. No, because CCI only occurs in the 5 GHz frequency band
- C. Yes, because the client devices connected to one of the channel 1 APs will transmit frames that reach the other channel 1 AP as well as
- D. Yes, because channel 11 loops around and causes CCI with channel 1
正解: C
質問 38
In addition to coverage analysis results, what should be included in a post-deployment site survey report to ensure WLAN users experience acceptable performance?
- A. Capacity analysis results
- B. Application Layer protocol availability analysis results
- C. Layer 4 protocol availability analysis results
- D. WAN interface analysis results
正解: A
解説:
Explanation/Reference:
質問 39
What statement describes the authorization component of a AAA implementation?
- A. Implementing a WIPS as a full-time monitoring solution to enforce policies.
- B. Validating client device credentials against a database.
- C. Granting access to specific network services or resources according to a user profile.
- D. Verifying that a user is who he says he is.
正解: C
質問 40
You are configuring an access point to use channel 128. What important fact should be considered about this channels?
- A. It is a channel that likely requires DFS when used
- B. It is a 2.4 GHz frequency band 40 MHz channel, so it should not be used
- C. It is a channel that is unsupported by most access points
- D. It is a 22 MHz channel so it will overlap with the channels above and below it
正解: A
質問 41
Which one of the following is not a factor considered when calculating the Link Budget for an outdoor point-to- point WLAN bridge link?
- A. Receive antenna gain
- B. Operating frequency
- C. MU-MIMO capabilities of the bridges
- D. Transmit power
正解: C
質問 42
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 short guard interval is also enabled
- B. The clients are all 802.11n STAs or lower
- C. All clients implement single spatial stream radios
- D. The AP is improperly configured to use only 40 MHz of the 80 MHz allocated bandwidth
正解: B
質問 43
To ease user complexity, your company has implemented a single SSID for all employees.
However, the network administrator needs a way to control the network resources that can be accessed by each employee based on their department.
What WLAN feature would allow the network administrator to accomplish this task?
- A. WIPS
- B. WPA2
- C. RBAC
- D. SNMP
正解: C
質問 44
What term describes the effect of increasing the intensity of an RF wave with an antenna by focusing the energy in a specific direction?
- A. Active Amplification
- B. Passive Gain
- C. Distributed Radiation
- D. Beam Compression
- E. RF Flooding
正解: B
質問 45
What distinguishes an independent basic service set (IBSS) from an infrastructure basic service set (BSS)?
- A. An IBSS does not have a distribution system (DS), but a BSS does.
- B. An IBSS does not support any 802.11ac enhancements, but a BSS does.
- C. An IBSS does not support 802.11 authentication or association, but a BSS does.
- D. An IBSS does not require beacon frames, but a BSS does.
正解: A
質問 46
What 802.11 network configuration would result in multiple stations broadcasting Beacon frames with the same BSSID but with different source addresses?
- A. A single AP supports multiple BSSs with different SSIDs.
- B. Multiple APs have been loaded with the same configuration from an image file.
- C. An IBSS is used instead of a BSS.
- D. An SCA network is in use.
正解: C
質問 47
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試験問題解答ブレーン問題集でCWNA-108試験問題集PDF問題：https://jp.fast2test.com/CWNA-108-premium-file.html
CWNA-108テスト準備トレーニング練習試験問題練習テスト：https://drive.google.com/open?id=1EsTPikvSPaCcChfLH4bIZk8sRuKmVeUy