多选题Your network is suffering from regular outages. After troubleshooting， you learn that the transmit lead of a fiber uplink was damaged. Which two features can prevent the same issues in the future？（）Aroot guardBloop guardCBPDU guardDUDLDEBPDU skew detection
多选题
Your network is suffering from regular outages. After troubleshooting， you learn that the transmit lead of a fiber uplink was damaged. Which two features can prevent the same issues in the future？（）
A
root guard
B
loop guard
C
BPDU guard
D
UDLD
E
BPDU skew detection
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