PW0-205 試験問題を無料オンラインアクセス

Which of the following information elements are contained in an 802.11 Probe Request frame?

• A.SSID
• B.Capability information
• C.Association ID
• D.Status code
• E.Supported rates

An 802.11b client station does not receive an acknowledgement for a data frame that it attempted to transmit to another station on the network. In this case, what happens to the wireless client station DCF contention window?

• A.It varies because the backoff algorithm is random.
• B.The slot time within the contention window decreases by 50%.
• C.The contention window approximately doubles in size.
• D.The contention window is not affected by failed Data frame deliveries.
• E.The contention window is immediately closed, and the frame is retransmitted.

Which of these functions specifically relate to 802.11b/g mixed mode operation when both
802.11b and 802.11g client stations are active on the network?

• A.Fragmentation Thresholds
• B.Null Function Data frames
• C.CF-End frames
• D.CTS-to-Self frames
• E.PS-Polling frames

ABC Company has recently installed its first access point. The access point is an 802.11g unit, and both 802.11g and 802.11b client stations will be used on the wireless network simultaneously. The network administrator has appropriately configured the access point and all of the company 802.11b wireless client stations to use short preambles for CCK transmissions. A visitor begins using a Personal Data Assistant (PDA) with integrated
802.11b configured for use of long preambles on ABC wireless network. Which of the following describes what the network administrator will see with a wireless protocol analyzer?

• A.Once the visitor PDA is associated to the access point, all 802.11b stations associated to the access point will begin using long preambles.
• B.The visitor PDA will not be able to associate to the wireless network, and it will cause significant interference for other wireless stations.
• C.Only after the visitor's PDA associates to the access point, will the 802.11g client stations begin using protection mechanisms.
• D.The visitor PDA associates to the access point using MMPDUs with long preambles, then begins sending Data frames using short preambles.
• E.The visitor PDA will communicate with the access point using long preambles, and the access point will communicate with all other client stations using short preambles.

Which of the following steps must be taken prior to use of a wireless LAN protocol analyzer?

• A.Load special firmware into the wireless LAN card being used for analysis.
• B.Load the wireless LAN protocol interpreter engine provided by the manufacturer.
• C.Disable all installed network adapters except for the wireless LAN card in use.
• D.Configure the wireless LAN card client utilities for RF Monitor mode.
• E.Install a special driver for the specific wireless LAN card being used.