Which feature automatically disables Cisco Express Forwarding when it is enabled?
正解:D
Explanation/Reference: Explanation: If you enable Cisco Express Forwarding and then create an access list that uses the logkeyword, the packets that match the access list are not Cisco Express Forwarding switched. They are process switched. Logging disables Cisco Express Forwarding. Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipswitch_cef/configuration/12-4t/isw-cef-12-4t- book/isw-cef-enable-disable.html