You are using AutoQoS Enterprise and realize that the results are not what you expected. Whichof the following are possible reasons for AutoQoS not functioning correctly？（Choose all thatapply.）（）

• A、The interface you configured for AutoQoS is set to half-duplex
• B、AutoQoS was configured on only one end of the link
• C、The interface you configured for AutoQoS has no IP address
• D、The interface’s bandwidth is not correctly configured
• E、CEF is not enabled on the interface
• F、You enabled AutoQoS on the interface but forgot to enable globally first