What is valid reason fora switch to deny port access to new devices when port security is enabled? A. The denied MACaddresses have already been learned or confgured on another secure interface inthe same VLAN. B. The denied MAC addressare statically configured on the port. C. The minimum MACthreshold has been reached. D. The absolute agingtimes for the denied MAC addresses have expired. Answer: B
b选项为什么对? a选项为什么不对?
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