多项选择题

Which two Aironet enterprise solution statements are true？（）

A.A Cisco Aironet AP handles the transmission of beacon frames and also handles responses to probe-request frames from clients
B.A Cisco Aironet solution includes intelligent Cisco Aironet access points （APs） and Cisco Catalyst switches
C.In the Cisco Aironet solution， each AP is locally configured by the use of either a web interface or the command line interface
D.The Cisco Aironet AP handles real-time portions of the LWAPP protocol， and the WLAN controller handles those items which are not time sensitive
E.Virtual MAC architecture allows the splitting of the 802.11 protocol between the Cisco Aironet AP and a LAN switch

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单项选择题

Refer to the exhibit. What is the effect on the trust boundary of configuring the command mls qos trust cos on the switch port that is connected to the IP phone？（）

A.Effectively the trust boundary has been moved to the IP phone
B.The host is now establishing the CoS value and has effectively become the trust boundary
C.The switch is rewriting packets it receives from the IP phone and determining the CoS value
D.The switch will no longer tag incoming voice packets and will trust the distribution layer switch to set the CoS
E.RTP will be used to negotiate a CoS value based upon bandwidth utilization on the link

单项选择题

Refer to the exhibit. Which statement is true about a voice VLAN？（）

A.Physically the voice network and the data network are separate
B.The voice traffic will normally be on a different IP subnet than will the data traffic
C.End user intervention is necessary to place the phone into the proper VLAN
D.The same security policy should be implemented for both voice and data traffic
E.The data VLAN must be configured as the native VLAN

单项选择题

What is the difference between the IPv6 addresses ：：/0 and ：：/128？（）

A.：：/0 is the unspecified address， and ：：/128 is the multicast address
B.：：/0 is the unicast address， and ：：/128 is the anycast address
C.：：/0 is the unicast address， and ：：/128 is the multicast address
D.：：/0 is the anycast address， and ：：/128 is the multicast address
E.：：/0 is the default route， and ：：/128 is the unspecified address
F.：：/0 is the anycast address， and ：：/128 is the default address