CWNA-106 무료 덤프문제 온라인 액세스

A Wi-Fi Alliance interoperability certificate indicates that a device is a/b/g/n certified. It further indicates one transmit and receive spatial stream for both the 2.4 GHz and 5.0 GHz bands. It further indicates support for both WPA and WPA2 Enterprise and Personal.
Finally, it indicates support for EAP-TLS, EAP-TTLS/MSCHAPv2, PEAPv0/EAP-
MSCHAPv2 and PEAPv1/EAP-GTC. Which one of the following statements is false?

• A.This client device supports X.509 certificates for EAP authentication.
• B.300 Mbps is the maximum supported data rate for this device.
• C.This client device supports protection mechanisms such as RTS/CTS and/or CTS-to-
  Self.
• D.This client device supports both TKIP and CCMP ciphersuites.

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

AP-1 is a 3x3:2 AP. STA-3 is a 3x3:3 client. What is the maximum number of spatial streams that can be used for a downlink HT-OFDM transmission from AP-1 to STA-3?

• A.Three spatial streams, because the definition of the client indicates that it is capable of only three spatial streams.
• B.Three spatial streams, because the definition of the AP indicates that it is capable of only three spatial streams.
• C.Two spatial streams, because the definition of the AP indicates that it is capable of only two spatial streams.
• D.One spatial stream, because the definition of the AP indicates that it is capable of only one spatial stream.

What HT technology requires MIMO support on both the transmitter and receiver?

• A.Orthogonal Frequency Division Multiplexing
• B.Maximal ratio combining
• C.Spatial multiplexing
• D.Shot guard intervals

During the discovery and connectivityprocess, client and AP stations exchange information about their supported data rates. After the association, how do client and AP stations select the supported data rate that will be used to send an 802.11 data frame?

• A.The client and AP may use a different transmit rates, but the transmit rate is determined by the peer station, based on the peer's experience of the RF link.
• B.The client and AP each choose the optimal data rate to use independently of one another, based on their own measurements related tothe RF link.
• C.The client and AP may use different transmit rates, but the client determines the data rate thatit will use and the datarate that the AP will use when communicating to the client.
• D.The client and AP may use different transmit rates, but the AP determines the data rate that will be used by each client station in the BSS.
• E.During the association, the client and AP agree to use thesame transmit rate, but either station can request a change at any time after the association.