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单项选择题What method in a Cisco IOS router can confirm that packets marked for a particular QoS marking are being matched?()

A、Issue a show policy-map interface command. 

B、Assuming Netflow is enabled, issue a show ip cache verbose flow command.

C、Issue a show crypto ipsec session command.

D、Issue a debug qos set command and a terminal monitor command.

  • A
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