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Japancertはその近道を提供し、君の多くの時間と労力も節約します。JapancertはCWNPのCWNA-109認定試験「CWNP Wireless Network Administrator (CWNA)」に向けてもっともよい問題集を研究しています。もしほかのホームページに弊社みたいな問題集を見れば、あとでみ続けて、弊社の商品を盗作することとよくわかります。Japancertが提供した資料は最も全面的で、しかも更新の最も速いです。
| Certification Vendor: | CWNP |
|---|---|
| Exam Name: | CWNP Wireless Network Administrator (CWNA) |
| Exam Number: | CWNA-109 |
| Real Exam Qty: | 60 |
| Certificate Validity Period: | 3 years |
| Available Languages: | English |
| Exam Format: | Multiple Answer, Multiple Choice |
| Related Certifications: | CWDP CWSP CWAP CWNE |
| Exam Duration: | 90 minutes |
| Passing Score: | 70% |
| Exam Price: | $274.99 USD |
| Recommended Training: | CWNA-109 Official Study Guide CWNA-109 eLearning Course |
| Exam Registration: | CWNP Official Registration Prometric Testing Centers |
| Sample Questions: | CWNP CWNA-109 Sample Questions |
| Exam Way: | Online remote proctored or in-person at Prometric testing centers |
| Pre Condition: | No formal prerequisites; basic networking knowledge recommended |
| Official Syllabus URL: | https://www.cwnp.com/certifications/cwna |
市場では、顧客の観点から判断するための未定の品質を備えたいくつかの実習用教材が市場に登場しています。 間違ったCWNA-109練習教材を選択した場合、重大な間違いになります。 彼らの行動は厳密に倫理的ではなく、あなたにとって無責任ではありません。 進捗状況を確認し、CWNA-109トレーニング資料の証明書を取得することは、当然のことながら、最新かつ最も正確な知識を備えた最も専門的な専門家によるものです。 CWNP Wireless Network Administrator (CWNA)試験準備は市場の大部分を占めています。 次のようにいくつかの機能を知ってください。
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質問 # 89
Which EAP type requires digital certificates on both the authentication server and the client supplicant for mutual authentication?
正解：D
解説：
EAP-TLS (Extensible Authentication Protocol-Transport Layer Security) requires a digital certificate to be installed on both the RADIUS authentication server and the client device, or supplicant. This mutual certificate-based authentication makes EAP-TLS one of the most secure EAP types, as it does not rely on passwords that could be compromised. The tradeoff is the administrative overhead of deploying and managing a Public Key Infrastructure (PKI) to issue and maintain client certificates.
質問 # 90
XYZ Company has decided to install an 802.11 WLAN system that will support 1083 wireless users, but they are concerned about network security. XYZ is interested in deploying standardized security features. In addition to WPA2-Enterprise with PEAP and role-based access control, XYZ would like to support management frame protection as well as a fast secure roaming protocol for future mobile handsets.
As XYZ Company selects a product to deploy, what two IEEE amendments, which are included in
802.11-2016, and 802.11-2020 should be supported to provide the management frame protection and fast secure roaming security features?
正解：A
解説：
The two IEEE amendments that should be supported to provide the management frame protection and fast secure roaming security features are 802.11r and 802.11w12.
* 802.11r (Fast BSS Transition): This amendment to the IEEE 802.11 standard permits continuous connectivity aboard wireless devices in motion, with fast and secure client transitions from one Basic Service Set to another1.
* 802.11w (Management Frame Protection): This amendment increases the security of its management frames2.
質問 # 91
The IEEE 802.11-2012 standard requires VHT capable devices to be backward compatible with devices using which other 802.11 physical layer specifications (PHYs)?
正解：A
解説：
OFDM (Orthogonal Frequency Division Multiplexing) is the physical layer specification (PHY) that VHT capable devices must be backward compatible with according to the IEEE 802.11-2012 standard. VHT (Very High Throughput) is aPHY and MAC enhancement that is defined in the IEEE 802.11ac amendment and is also known as Wi-Fi 5. VHT operates only in the 5 GHz band and uses features such as wider channel bandwidths (up to 160 MHz), higher modulation schemes (up to 256-QAM), more spatial streams (up to eight), multi-user MIMO (MU-MIMO), beamforming, and VHT PHY and MAC enhancements. VHT can achieve data rates up to 6.9 Gbps.
According to the IEEE 802.11-2012 standard, VHT capable devices must be backward compatible with devices using OFDM PHY, which is defined in the IEEE 802.11a amendment and is also used by IEEE
802.11g, IEEE 802.11n, and IEEE 802.11h amendments. OFDM operates in both the 2.4 GHz and 5 GHz bands and uses features such as subcarriers, symbols, guard intervals, and OFDM PHY and MAC enhancements. OFDM can achieve data rates up to 54 Mbps.
Backward compatibility means that VHT capable devices can interoperate with OFDM devices on the same network by using common features and parameters that are supported by both PHYs. For example, VHT capable devices can use a channel bandwidth of 20 MHz, a modulation scheme of BPSK, QPSK, or 16-QAM, one spatial stream, no beamforming, and OFDM PHY and MAC headers when communicating with OFDM devices. Backward compatibility also means that VHT capable devices can fall back to OFDMmode when the signal quality or SNR is too low for VHT mode. References: 1, Chapter 3, page 123; 2, Section 3.2
質問 # 92
Lynne runs a small hotel, and as a value added service for his customers he has implemented a Wi-Fi hot-spot.
Lynne has read news articles about how hackers wait at hot-spots trying to take advantage of unsuspecting users. He wants to avoid this problem at his hotel.
What is an efficient and practical step that Lynne can take to decrease the likelihood of active attacks on his customers' wireless computers?
正解：C
解説：
In a public Wi-Fi hotspot, like the one Lynne runs in his hotel, ensuring customer security against active attacks is crucial. Active attacks involve unauthorized access, eavesdropping, or manipulation of the network traffic. To mitigate such threats, an effective and practical step is:
* Station-to-Station Traffic Blocking: Also known as client isolation, this feature prevents direct communication between devices connected to the Wi-Fi network. By enabling this on the access points, Lynne can significantly decrease the likelihood of active attacks like man-in-the-middle (MITM) attacks, where an attacker intercepts and possibly alters the communication between two parties.
The other options, while beneficial for network security, might not be as straightforward or practical for Lynne's situation:
* Network Access Control (NAC)requires a more complex infrastructure and management, which might not be ideal for a small hotel setup.
* Implementing an SSL VPNadds an extra layer of security but might complicate the login process for users, potentially affecting the user experience.
* Requiring EAP-FAST authenticationprovides secure authentication but may not be feasible for transient customers who expect quick and easy network access.
Therefore, enabling station-to-station traffic blocking is a practical and efficient measure that Lynne can implement to enhance customer security on the Wi-Fi network.
References:
* CWNA Certified Wireless Network Administrator Official Study Guide: ExamCWNA-109, by David D: Coleman and David A. Westcott.
* Best practices for securing a wireless network in a public hotspot environment.
質問 # 93
ABC Company is planning a point-to-multipoint outdoor bridge deployment with standalone (autonomous)
802.11 bridge units. 802.1X/EAP will be used for bridge authentication. A Linux-based RADIUS server will be used for authentication. What device in the bridge implementation acts as the 802.1X Authenticator?
正解：A
解説：
The device in the bridge implementation that acts as the 802.1X Authenticator is the root bridge. The root bridge is the bridge that connects to the wired network and acts as the central point for all other bridges in the point-to-multipoint topology. The root bridge authenticates the non-root bridges using 802.1X/EAP and forwards their authentication requests to the RADIUS server. The non-root bridges act as the 802.1X Supplicants and use EAP methods such as EAP-TLS or EAP-PEAP to authenticate with the root bridge. References: [CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-
109], page 459; [Cisco Aironet Wireless Bridges FAQ], question 29.
質問 # 94
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