单选题You are about to design a very fast convergence time on a service provider network. Which feature wouldyou utilize to declare a link failure within less than two seconds of the fault on a link？（）Afast convergence SFPBMTU discoveryCredundancy linksDkeepaliveEcarrier delay
单选题
You are about to design a very fast convergence time on a service provider network. Which feature wouldyou utilize to declare a link failure within less than two seconds of the fault on a link？（）
A
fast convergence SFP
B
MTU discovery
C
redundancy links
D
keepalive
E
carrier delay
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