In this example, the "debug ip packet" command is tied to access list 199, specifying which IP packets should be debugged. Access list 199 contains two lines, one going from the host with IP address
10.1.1.1 to 172.16.1.1 and the other specifying all TCP packets from host 172.16.1.1 to 10.1.1.1.
Incorrect Answers:
A: Only the packets specified in access list 199 will be debugged, not all packets.
B: Access list 199 is an extended access list, which specifies that both the source and destination IP addresses must match. In this case, it is all TCP traffic to and from 10.1.1.1 to 172.16.1.1.
C: There are two separate lines in access list 199, the first does indeed match all TCP packets from
10.1.1.1 to 172.16.1.1, but the second line also include traffic the other way, from 172.16.1.1 to
10.1.1.1.