Which one is true statement about conditional debugging?
A. limited to Ethernet, serial, and multilink interfaces
B. generates debug messages only for packets entering the router
C. limit the output to a specific interface
D. support only one condition at a time
C
https://www.cisco.com/en/US/products/ps6017/products_command_reference_chapter09186a0080883b9f.html
the router generates debugging messages for packets entering or leaving the router on a specified interface
The debug condition commands limit these debugging messages to those related to a particular interface.
You can also turn on debugging for all interfaces that meet specified conditions.
you may want to see debugging messages only for one interface or subinterface.