Online Access Free CWNA-108 Exam Questions

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.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.
• 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.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.
• D.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.

What wireless networking term describes the increase of RF energy in an intentional direction with the use of an antenna?

• A.Beam Digression
• B.Passive Gain
• C.Active Amplification
• D.Directed Radiation

Three access points are used within a facility. One access point is on channel 11 and the other two are on channel 1. The two access points using channel 1 are on either side of the access point using channel 11 and sufficiently apart so that they do not interfere with each other when they transmit frames. Assuming no other APs are in the vicinity, is CCI still a possibility in this network and why?

• A.No, because the APs are far enough apart that no CCI will occur.
• B.Yes, because channel 11 loops around and causes CCI with channel 1.
• C.Yes, because the client devices connected to one of the channel 1 APs will transmit frames that reach the other channel 1 AP as well as clients connected to the other channel 1 AP.
• D.No, because CCI only occurs in the 5 GHz frequency band.

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

You are troubleshooting a client issue on a Windows laptop. The laptop can see and connect to 2.4 GHz APs, but is does not even see 5 GHz APs. While evaluating the issue, you determine that this problem is happening for all of the laptops of this model in the organization. Several other tablets connect on channel 48 and channel
52 in the same work areas. What is the likely problem?

• A.The client drivers are faulty and should be upgraded.
• B.The antennas in the laptop have insufficient gain to detect the 5 GHz signals.
• C.The clients are configured to use WPA and 5 GHz channels only support WPA2.
• D.The access points are configured to disallow 5 GHz.