单选题What method in a Cisco IOS router can confirm that packets marked for a particular QoS marking are being matched?（）AIssue a show policy-map interface command. BAssuming Netflow is enabled, issue a show ip cache verbose flow command.CIssue a show crypto ipsec session command.DIssue a debug qos set command and a terminal monitor command.
单选题
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.
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