Which two statements about IS-IS wide metrics are true? (Choose two.)
A. The wide metric is a 24-bit field.
B. The maximum link metric is 16777215.
C. R3 and R4 periodically advertise PNSP messages to synchronize the IS-IS database.
D. IS-IS devices that are enabled with wide metrics can become neighbors with a device that uses standard metrics.
E. The maximum link metric is 4261412864.
F. The maximum path metric is 16777215.
