Which two statements about extended ping data patterns are true ?
A. They can determine whether the wavelength received in the transceiver is correct.
B. They can test for routing protocol issues.
C. They can test the link for line code mismatches.
D. They can test the internal repeater for power issues.
E. They can test for STS/SDH errors.
F. They can be used with MPLS to ping an LSP end to end.
If someone wonders why CD is correct, https://community.cisco.com/t5/routing/extended-ping-data-patterns-defined/td-p/555823