An 802.1X client cannot authenticate to an autonomous access point configured for multiple
VLANs. The native VLAN does not have an SSID configured.
Which one of the following links being down would prevent the clients from authenticating？（）

In a deployment using the lightweight access points， clients set up to authenticate with EAP-PEAPor EAP-Cisco Wireless （LEAP） cannot authenticate. Upon inspection of the Failed Attempts reportyou see the following error： "Unknown network access server NAS." 
What two problems can causethis type of failure？（）

Your client has deployed a Cisco Wireless Location Appliance within their warehouse environment.They have been experiencing problems with tracking objects using active RFID tags. The RFID tagdata is not being collected.
On which device would you verify that RFID status has been enabled？（）