Free Certified Wireless Network Administrator Exam CWNA-108 Exam Practice Test

What 802.11 network configuration would result in multiple stations broadcasting Beacon frames with the same BSSID but with different source addresses?

• Multiple APs have been loaded with the same configuration from an image file.
  
• A single AP supports multiple BSSs with different SSIDs.
  
• An IBSS is used instead of a BSS.
  
• An SCA network is in use.
  

You are the network administrator for ABC Company. Your manager has recently attended a wireless security seminar. The seminar speaker taught that a wireless network could be hidden from potential intruders if you disabled the broadcasting of the SSID in Beacons and configured the access points not to respond to Probe Request frames that have a null SSID field.Your manager suggests implementing these security practices. What response should you give to this suggestion?

• Any 802.11 protocol analyzer can see the SSID in clear text in frames other than Beacons frames. This negates any security benefit of trying to hide the SSID in Beacons and Probe Response frames.
  
• To improve security by hiding the SSID, the AP and client stations must both be configured to remove the SSID from association request and response frames. Most WLAN products support this.
  
• Any tenants in the same building using advanced penetration testing tools will be able to obtain the SSID by exploiting WPA EAPOL-Key exchanges. This poses an additional risk of exposing the WPA key.
  
• This security practice prevents manufacturers' client utilities from detecting the SSID. As a result, the SSID cannot be obtained by attackers, except through social engineering, guessing, or use of a WIPS.
  

In an 802.11 2.4 GHz system, what 22 MHz channels are considered non-overlapping?

• 7 and 11
  
• 2 and 8
  
• 1 and 5
  
• 4 and 6
  

What ID is typically mapped to an AP's MAC address if a single BSS is implemented?

• SSID
  
• Device ID
  
• VLAN ID
  
• BSSID
  

When compared with legacy Power Save mode, how does VHT TXOP power save improve battery life for devices on a WLAN?

• Legacy Power Save mode was removed in the 802.11ac amendment.
  
• VHT TXOP power save allows the WLAN transceiver to disable more components when in a low power state.
  
• VHT TXOP power save uses the partial AID in the preamble to allow clients to identify frames targeted for them.
  
• VHT TXOP power save allows stations to enter sleep mode and legacy Power Save does not.
  

What is appended to the end of each 802.11 data frame after the payload?

• Preamble
  
• MAC header
  
• PHY header
  
• FCS
  

To ease user complexity, your company has implemented a single SSID for all employees. However, the network administrator needs a way to control the network resources that can be accessed by each employee based in their department.What WLAN feature would allow the network administrator to accomplish this task?

• RBAC
  
• WPA2
  
• WIPS
  
• SNMP
  

Your manager asked you to locate a solution that allows for centralized monitoring of WLAN performance over time. He wants a single pane of glass for administration and monitoring of the solution. What do you recommend?

• Laptop-based spectrum analyzers
  
• AP-based spectrum analysis
  
• Overlay WLAN monitoring solution
  
• Laptop-based protocol analyzers
  

What statement describes the authorization component of a AAA implementation?

• Verifying that a user is who he says he is.
  
• Implementing a WIPS as a full-time monitoring solution to enforce policies.
  
• Granting access to specific network services or resources according to a user profile.
  
• Validating client device credentials against a database.
  

What is the most effective method for testing roaming in relation to 802.11 VoIP handsets?

• Use a spectrum analyzer to monitor RF activity during a VoIP call.
  
• Use a protocol analyzer to capture the traffic generated when a laptop roams.
  
• Place a call with the handset and move around the facility to test quality during roaming.
  
• Use the built-in roaming monitor built into all VoIP handsets.