CWNP Certified wireless analusis professional(cwap) 認定 PW0-205 試験問題:

1. How does an access point operating in DCF mode notify a client station operating in Power Save mode of multiple multicast frames queued at the access point?

A) The access point sets the Beacon DTIM to indicate that it has queued multicast traffic for the client station.
B) The access point sets the Duration field of each Beacon to a value equal to the amount of time it will take to send all of the queued multicast frames to the client station.
C) The access point sets the More Data subfield in the Frame Control field of each Data frame to 1 until the last multicast frame is delivered.
D) The access point responds to the client station PS-Poll frame with the AID subfield set to a value equal to the number of queued multicast frames.
E) The access point sends the client station a CF-Poll frame with the AID subfield set to the station MAC address.

2. In an 802.11b PLCP header, what does the 16-bit length field indicate?

A) The length of time in microseconds it will take to transmit the MPDU
B) The length of time in kilomicroseconds it will take to transmit the PSDU
C) The size in bits of the entire PPDU frame
D) The size in octets of the MPDU being transferred in the PPDU

3. Given the displayed wireless protocol analyzer trace, which of the following is true?

A) Both 00:40:96:A1:9A:F9 and 00:0D:ED:A5:4F:70 are operating in Ad Hoc mode using WPA-compliant 802.1X/EAP authentication.
B) 00:40:96:A1:9A:F9 is a client station performing a successful 802.1X/EAP reauthentication.
C) FF:FF:FF:FF:FF:FF is the access point, and data encrypted with static WEP is being sent from a wired station to the wireless station 00:40:96:A1:9A:F9.
D) 00:0D:ED:A5:4F:70 is a client station sending unicast data frames to a network node on the wired LAN.
E) 00:40:96:A1:9A:F9 is a station sending encrypted broadcast data using an encryption key generated by the authenticator.

4. An 802.11b PPDU's preamble consists of two fields and can collectively be considered
"long" or "short" by the 802.11b standard. Which of the following is true regarding the PLCP preamble?

A) 802.11g stations associating to 802.11b access points must use the DSSS preamble length specified by the access point.
B) An 802.11b access point that supports both long and short preambles may allow stations that are using different preamble lengths to communicate through it simultaneously.
C) A long preamble uses a Sync field of 128 bits, and both stations and access points may have configurable preamble lengths.
D) Long and short preamble lengths are both variable depending on the modulation in use on the network, and access points always inform stations of the preamble length in use on the network.
E) A short preamble uses a Sync field of 40 bits, and stations and access points must have matching preamble lengths in order to communicate.
F) When short preambles are being used, the Sync and SFD fields both consist of 16 bits.
Only access points have configurable preamble lengths.

5. Which statement accurately describes why the Traffic Indication Map (TIM) information element is not shown in this Beacon Management frame?

A) Beacons only contain TIMs when the Power Management bit in the Frame Control field of the MAC header is set to 1
B) Beacons transmitted by 802.11 IBSS networks do not include TIMs.
C) This Beacon was captured on channel 2 but was transmitted on channel 1. This caused a loss of information elements within the Beacon.
D) This model of access point does not support 802.11 compliant Power Save mode.
E) This Beacon frame is using a DTIM instead of a TIM.

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