CWNP Certified Wireless Analysis Professional 認定 CWAP-405 試験問題:

1. Which statement accurately describes IEEE 802.11 Power Save operation in a Basic Service Set that does not support the QoS facility?

A) After waking at a scheduled TBTT, client stations send Null Function frames to the access point with the Power Management bit set back to zero.
B) When the access point's buffer is full, the access point wakes all client stations using a PS-Poll frame so that they can receive the data.
C) After waking from a low power state, client stations listen for the next Beacon to determine if sending a PS-Poll frame to the access point is necessary.
D) Upon receiving traffic for a dozing station, the access point wakes the client station using a PS- Poll frame so that the client station can receive the data.
E) Following a period of time in a low power state, client stations wake themselves and automatically poll the access point for traffic using a PS-Poll frame.

2. To what does the channel number displayed in the radio tap header refer?

A) Channel the frame was transmitted on
B) Channel the frame was captured on
C) The channel reported in the channel field of the PHY header
D) The channel of the AP to which the protocol analyzer is associated

3. What is used in the PHY header of 802.11ax transmissions to identify stations that are included in an OFDMA RU-based multi-user transmission?

A) Station MAC address
B) Station ID
C) Station TCP port
D) Station IP address

4. Which element do APs use to inform clients of the regulatory power limits and channel sets for the current region?

A) Supported Data Rates
B) Supported Channels
C) Regulatory IE
D) Country Code

5. You are exploring the packet decode of an 802.11 data frame and notice the To DS and From DS bits of the Frame Control field are both set to 1. Assuming the frame does not have a CRC error, what can you conclude about this frame?

A) The frame was transmitted between two WLAN infrastructure devices such as WLAN bridges or Mesh APs.
B) This is non-standard 802.11 behavior and this frame must be part of the proprietary feature.
C) The frame is a retransmission.
D) The frame has been transmitted on an Ad-Hoc network.

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