You administer a small WLAN with nine access points. As a small business, you do not run a RADIUS server and use WPA2-Personal for security. Recently, you changed the passphrase for WPA2-Personal in all APs and clients. Several users are now reporting the inability to connect to the network at times and it is constrained to one area of the building. When using a WLAN scanner, you see that the AP covering that area is online and has a strong signal. No other changes have been made to the environment and all access points are the same model. What is the likely problem?

• A.The AP that covers the problem area has failed
• B.The clients are improperly configured
• C.The AP that covers the problem area is improperly configured
• D.The AP that covers the problem area requires a firmware update

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What statement about 802.11 WLAN bridges is true?

• A.WLAN bridges only work in the 2.4 GHz frequency band and they support only SISO communications
• B.WLAN bridges must use a channel with acceptable SNR at both transceivers to maintain the desired data rate bi-directionally
• C.WLAN bridges may support MIMO communication, but only if used in the GHz frequency band
• D.WLAN bridges must be implemented such that no interference occurs on the channel anywhere between the two endpoints used to establish the bridge

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In WLAN security, what authentication method always creates Layer 2 dynamic encryption keys?

• A.Shared Key
• B.WEP
• C.HTTPS captive portal
• D.EAP-TLS

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What statement accurately describes the RF cables and connectors that are used in an 802.11 WLAN system?

• A.Some RF connectorsdo not cause insertion loss.
• B.Large diameter RF cables cause greater loss than small diameter cables.
• C.75 and 125 ohms are the typical impedances of 802.11 WLAN connectors.
• D.Two RF connectors of the same type (e.g. SMA), manufactured by different companies, may vary in specifications.

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What statement about the IEEE 802.11e QoS facility is true?

• A.802.11 control frames are assigned to the 802.11 EF priority queue.
• B.802.11 QoS is achieved by giving high priority queues a statistical advantage at winning contention.
• C.Four 802.1p user priorities are mapped to eight 802.11 transmit queues.
• D.When the Voice queue has frames awaiting transmission, no data will be transmitted from the Best Effort queue.

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