单项选择题 AllofthesearefundamentalbuildingblocksofadifferentiatedservicesTrafficConditionerBlockexceptwhichone？（）

问答题 ospf的defaultmetric如何计算？

单项选择题 Refer to the exhibit. You have noticed that several users in the network are consuming a great deal of bandwidth for the peer-to-peer application Kazaa2. You would like to limit this traffic, and at the same time provide a guaranteed 100 kb/s bandwidth for one of your servers. After applying the configuration in the exhibit, you notice no change in the bandwidth utilization on the serial link; it is still heavily oversubscribing the interface. What is the cause of this problem? （）