CWNA-108 무료 덤프문제 온라인 액세스

You are troubleshooting a controller-based AP that is unable to locate the controller. DHCP is not use and the controller is located at 10.10.10.81/24 while the AP is on the 10.10.16.0/24 network. What should be inspected to verify proper configuration?

• A.AP hosts file
• B.DNS
• C.BOOTH
• D.NTP

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?

• A.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.
• B.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.
• C.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.
• D.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.

Return Loss is the decrease of forward energy in a system when some of the power is being reflected back toward the transmitter. What will cause high return loss in an RF transmission system, including the radio, cables, connectors and antenna?

• A.High output power at the transmitter and use of a low-gain antenna
• B.A significant impedance mismatch between components in the RF system
• C.The use of 50 ohm cables longer than one meter in the RF system
• D.A Voltage Standing Wave Ratio (VSWR) of 1:1

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?

• A.AP-based spectrum analysis
• B.Laptop-based protocol analyzers
• C.Overlay WLAN monitoring solution
• D.Laptop-based spectrum analyzers

What statement about 802.11 WLAN performance is true?

• A.In modem networks, both centralized and distributed data forwarding work well for most standard office deployments
• B.WLANs perform better as more wireless clients connect with each AP
• C.To get the best performance out of an AP, you should disable data rates of 72 Mbps and lower
• D.In most WLANs, no special skill or tuning is required to get peak performance