多选题
Refer to the exhibit. Which two statements are true about the required switch configurations to support a voice VLAN？（） 
发布日期：2021-01-28
CDP must be disabled on the switch port to prevent interference between CDP messages and voice traffic.
Port security cannot be configured on a port that is configured for a voice vlan.
Static secure MAC addresses should be configured on voice vlan ports to prevent access by devices other than IP phones.
CDP must be enabled on the switch port to allow configuration information to be passed to the IP phone.
Portfast must be enabled on the switch port.
802.1x authentication cannot be configured on a port configured for a voice vlan.
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