[多选] Which three statements are true about the voice VLAN feature on a Catalyst 2950 switch？（Choose three.）（）

A . The CoS value is trusted for 802.1p or 802.1q tagged traffic.
B . The voice VLAN feature is disabled by default.
C . The IP phone accepts the priority of all tagged and untagged traffic and sets the CoS value to 4.
D . When the voice VLAN feature is enabled， all untagged traffic is sent according to the default CoS priority of the port.
E . PortFast is automatically disabled when a voice VLAN is configured.
F . The default CoS value for incoming traffic is set to 0.

大多数生物都是二倍体。公司财务中的全面预算包括（）现金收支。资金需求与融通。经营成果。财务状况。下列各项中，（）的存在是教育权与受教育权相互依托的基础。受教育者。学校。教育者。社会。 Which two tasks does the Dynamic Host Configuration Protocol perform?（） Set the IP gateway to be used by the network.。 Perform host discovery used DHCPDISCOVER message.。 Configure IP address parameters from DHCP server to a host.。 Provide an easy management of layer 3 devices.。 Monitor IP performance using the DHCP server.。 Assign and renew IP address from the default pool.。致突变物 Which three statements are true about the voice VLAN feature on a Catalyst 2950 switch？（Choose three.）（）

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[多选] Which three statements are true about the voice VLAN feature on a Catalyst 2950 switch？ （Choose three.）（）

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[多选] Which three statements are true about the voice VLAN feature on a Catalyst 2950 switch？（Choose three.）（）