最新CWAP-405｜完璧なCWAP-405専門知識内容試験｜試験の準備方法Certified Wireless Analysis Professional予想試験CWAP-405学習ガイドは世界を対象としており、ユーザーは非常に広範囲です。ユーザーにより良い体験を提供するために、私たちは常に改善しています。 CWAP-405試験準備の高い品質と効率は、ユーザーに認められています。当社のCWAP-405テスト資料の高い合格率は最大の特徴です。 CWAP-405試験準備を使用している限り、必要なものを確実に収集できます。最短時間でCWAP-405試験に合格できるだけでなく、夢のあるCWAP-405認定資格を取得して将来を明るくすることもできます。 CWNP Certified Wireless Analysis Professional 認定 CWAP-405 試験問題 (Q35-Q40):質問 # 35
You are troubleshooting a connection problem with a client STA. Regardless of the AP to which it attempts to connect, the connection fails. Using a wired protocol analyzer, you determine that the problem is with the
802.1X/EAP authentication to the RADIUS server.
What layer or range of layers of the OSI model revealed this information?
A. Layer 3
B. Above Layer 4
C. Below Layer 3
D. Layer 2
正解：A
質問 # 36
As the WLAN administrator in your organization you are responsible for troubleshooting connection issues.
Several STAs are connecting to the network, but are unable to communicate after connection. You suspect a DHCP problem. After capturing traffic on the wired-side of the AP, you want to view only DHCP traffic.
What filter in Wireshark can be used for this purpose?
A. DHCPv4
B. BOOTP
C. DHCP
D. DHCPv6
正解：B
質問 # 37
You have captured 802.11 traffic using an adapter that includes the radio tap header. You see several frames often called announcement frames in the capture.
What best describes these types of frames?
A. They are meant to provide information to the network that may result in state changes, but they are not open for rejection
B. They only include beacon and probe request frames
C. They are used to allow a STA to awake from sleep and for no other reason
D. They only include beacon and probe response frames
正解：D
質問 # 38
How is the length of an AIFS calculated?
A. DIFS + SIFS + AIFSN
B. SIFS + AIFS * Time Unit
C. AIFSN * Slot Time + SIFS
D. SIFS * Slot Time + AIFSN
正解：C
解説：
The length of an AIFS (Arbitration Interframe Space) is calculated by multiplying the AIFSN (Arbitration Interframe Space Number) by the Slot Time and adding the SIFS (Short Interframe Space). An AIFS is a variable interframe space introduced by 802.11e to help prioritize medium access for different Access Categories (ACs). An AC is a logical queue that corresponds to a QoS (Quality of Service) level for different types of traffic. Each AC has a different AIFSN value, which determines how long it has to wait before attempting to access the medium. A lower AIFSN value means a higher priority and a shorter waiting time.
The Slot Time is a fixed value that depends on the PHY type and channel width. The SIFS is the shortest interframe space that is used for high-priority transmissions, such as ACKs or CTSs. The formula for calculating the AIFS length is: AIFS = AIFSN * Slot Time + SIFS. References: [Wireless Analysis Professional Study Guide CWAP-405], Chapter 7: QoS Analysis, page 194-195
質問 # 39
You're the WLAN administrator for a large retailer based at the HQ in New York. The London-based office has been complaining about WLAN disconnections around lunch time each day. You suspect this might be interference from the staff microwave, how might you test your theory from the New York office?
A. Access the microwave remotely and run a diagnostic check
B. Ask a local member of staff to take some pictures of the microwave, including some close-ups of the door seal so that you can assess it
C. Ask a local member of staff to change the frequency of the microwave and see if the disconnections stop
D. Place one of the London APs into spectrum analyzer mode and monitor the situation over lunch time
正解：D
解説：
The best way to test the theory of microwave interference from the New York office is to use a remote spectrum analyzer. By placing one of the London APs into spectrum analyzer mode, you can capture and analyze the RF spectrum in the London office over lunch time. You can then look for any signs of microwave interference, such as high duty cycle, high amplitude, or frequency hopping on the 2.4 GHz band. This method does not require any physical access to the microwave or any changes to its frequency. References: [Wireless Analysis Professional Study Guide], Chapter 3: Spectrum Analysis, page 64