CWNA-106 試験問題を無料オンラインアクセス

The OSI model is a 7-layer model forunderstanding the functions of a communication system. What OSI sublayers are specifically addressed by the IEEE 802.11-2012 standard? (Choose 2)

• A.Network
• B.MAC
• C.PLCP
• D.Transport
• E.PPDU
• F.IP

What parameter of the client drivershould be configured on a Windows computer to optimize moving from one AP to another within the ESS?

• A.SSID selection
• B.Roaming threshold
• C.ESSID selection
• D.Band preference

ABC Company has just purchased a 6 dBi patch antenna. After performing some testswith the 6 dBi antenna, they have concluded that more antenna gain is needed to cover their outdoor courtyard. When choosing an antenna with higher gain, what other antenna characteristic will also always change?

• A.Fresnel Zone size
• B.VSWR Ratio
• C.Maximum input power
• D.Impedance
• E.Beamwidth

An 802.11 WLAN transmitter thatemits a 50 mW signal is connected to a cable with 3 dB of loss. The cable is connected to an antenna with 16 dBi of gain.
What is the EIRP power output?

• A.1000 mW
• B.250 mW
• C.500 mW
• D.2 mW

You have been sent as a consultant to a customer site that is experiencing problems with some 2.4 GHz clients on their 802.11a/g/n/ac network. After collecting informationfrom the company about the problem, your initial troubleshooting step is to find a client device experiencing performance problems and observe its 802.11 frame exchanges in a protocol analyzer. The retransmission rate for that client is 65% instead of thecompany's baseline, which is 9%.
Based on this information, what troubleshooting step should follow to isolate the problem?

• A.Utilize a laptop-based site survey and planning tool to create a predictive model of the optimal AP placement in the customer's facility.
• B.With a protocol analyzer, identify the client's roaming threshold settings and reassociation behavior.
• C.Install Wi-Fi endpoint security and reporting software on the client device to monitor and log the retransmission behavior.
• D.Check theframe decodes in the protocol analyzer and look for an excessive number of deauthentication frames.
• E.Evaluate the client's operating frequency band with a spectrum analyzer, looking for a high noise floor or interference sources.