Which process is resp*****ible for monitoring an IT Service and detecting when the
performance drops below acceptable limits?
A. Service Level Management
B. Performance Management
C. Capacity Management
D. Event Management
请问高手们，这道题目选择什么呢？ 看到了两个答案。迷糊中！！！

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前排顶，很好！

LZ敢整点更有创意的不？兄弟们等着围观捏~