Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU?

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问题 Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU?

选项 A、 BackboneFast
B、 UplinkFast
C、 Root Guard
D、 BPDU Guard
E、 BPDU Filter

答案D

解析下面哪项交换机的功能能实现关闭正在接受BPDU且配置了PortFast接口？
考点分析：这道题考的是BPDU Guard这个概念。当端口接收到BPDU时，BUDU Guard会自动shut down此端口，这是BPDU Guard的作用。BPDU Guard通常结合PortFast用到接入端口上。

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Which Cisco Catalyst feature automatically disables the port in an operational PortFast upon receipt of a BPDU?

思科640802

思科认证

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