A. Configure the net system - id command under routerisis and enable IS - IS on each interface with the ip router isis command.
B. Configure the net sy stem - id and the network net - id commands under routerisis.
C. Configure the network net - id command(s) under routerisis and enable IS - IS on each interface with the ip router isis command.
D. Configure the network net - id command(s) and the is - type level -1- 2 command under routerisis.
E. Configure the net system - id and the network net - id commands under routerisis and enable ISIS on each interface with the ip router isis command.

A. P1R1 is the exi t point out of the area for P1R3.
B. P1R1 is a level - 1 only IS - IS router.
C. P1R1 has been configured with a nondefault IS - IS metric.
D. P1R3 is a level - 2 only IS - IS router.
E. P1R3has been configured with a nondefault IS - IS metric.
F. P1R3 routing ta ble should contain i L2 entries.