Free CWNP PW0-205 Exam Dumps Questions & Answers

Which of the following IEEE 802.11 units has a 16-bit frame check sequence (FCS)?

• A.  802.11a MPDU Frame Control field
• B.  802.11 MAC Protocol Data Unit (MPDU)
• C.  802.11g Announcement Traffic Indication Message (ATIM)
• D.  802.11 Wired Equivalent Privacy (WEP)
• E.  802.11b Physical Layer Convergence Protocol (PLCP) header

In a DCF 802.11g network, when is the Power Management subfield of the Frame Control field set to a value of 1?

• A.  Only in management frames sent by a client station immediately prior to entering a low power state (dozing) that are part of a frame exchange sequence.
• B.  Only in the PS-Poll frame sent from a client station operating in Power Save mode to an access point after the client station awakens from a low power state (dozing).
• C.  On any frame transmitted by a client station operating in Power Save mode.
• D.  On any Data frame sent by the access point subsequent to a PS-Poll frame.

The More Fragments subfield is found in which 802.11 frame field?

• A.  Protocol Order field
• B.  Fragmentation Control field
• C.  Sequence Control field
• D.  Frame Control field
• E.  MAC Service Data Unit field

Wireless LAN protocol analyzers often have a set of features for recording statistics and reporting information trends. What tasks do organizations most often use these features to perform?

• A.  Measuring the baseline throughput across particular access points in the wireless LAN network after installation.
• B.  Identifying rogue access points and stations on the wireless network and generating alarms that can be read by a centralized console.
• C.  Troubleshooting conversations between wireless nodes and other nodes (both wired and wireless) on the network.
• D.  Analyzing the number and type of wireless LAN attacks over a period of time
• E.  Analyzing the average throughput of a single user across an ESS over a period of time.

There are many wireless LAN scanners on the market such as NetStumbler, Kismet, MacStumbler, and others that can aid in finding the SSID of wireless LANs. In order to defeat the efforts of these scanners, some administrators configure their access points to stop broadcasting SSIDs in Beacons and not to respond to Probes with null (empty) SSID fields. Describe how wireless LAN protocol analyzers can circumvent this so-called
"security" solution.

• A.  Wireless LAN protocol analyzers using cards from the same manufacturer as the access point will always be able receive the SSID due to the proprietary chipset protocol extensions.
• B.  Wireless LAN protocol analyzer software puts the radio card driver into RF Monitor mode. This mode is recognized by access points as privileged, allowing them connectivity when it would otherwise be denied.
• C.  Wireless LAN protocol analyzers send specialized Probe Requests to which 802.11 compliant access points are required to respond with a Probe Response containing the SSID information.
• D.  Wireless LAN protocol analyzers use a special driver, used to operate the card in promiscuous mode. Promiscuous mode is a special mode allowing the radio card to see raw data frames, instead of the filtered data frames that standard mode radio cards see.
• E.  Wireless LAN protocol analyzers analyze all frames on a wireless LAN. Frame types other than Beacons and Probe Responses carry the SSID information.