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多选题
Which two statements are true about BPDU port-guard and BPDU filtering？（）
A
BPDU port-guard can be enabled globally， whereas BPDU filtering must be enabled on a per-interface basis.
B
When globally enabled， BPDU port-guard and BPDU filtering apply only to PortFast enabled ports.
C
When globally enabled， BPDU port-guard and BPDU filtering apply only to trunking-enabled ports.
D
When a BPDU is received on a BPDU port-guard enabled port， the interface goes into the err-disabled state.
E
When a BPDU is received on a BPDU filtering enabled port， the interface goes into the err-disabled state.
F
When a BPDU is received on a BPDU filtering enabled port， the interface goes into the STP blocking state.
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更多 “多选题Which two statements are true about BPDU port-guard and BPDU filtering？（）ABPDU port-guard can be enabled globally， whereas BPDU filtering must be enabled on a per-interface basis.BWhen globally enabled， BPDU port-guard and BPDU filtering apply only to PortFast enabled ports.CWhen globally enabled， BPDU port-guard and BPDU filtering apply only to trunking-enabled ports.DWhen a BPDU is received on a BPDU port-guard enabled port， the interface goes into the err-disabled state.EWhen a BPDU is received on a BPDU filtering enabled port， the interface goes into the err-disabled state.FWhen a BPDU is received on a BPDU filtering enabled port， the interface goes into the STP blocking state.” 相关考题
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