Which CLI command displays error statistics for an interface in real-time?（）

A.monitor traffic
B.show interfaces
C.monitor interface
D.show traffic counts

A.MTU and speed must be configured under each unit.
B.Physical parameters such as MTU, duplex mode, and speed are configured under the interface name.
C.IP and IPv6 addresses are configured under a unit-number.
D.DLCI numbers, VPI/VCI values, and VLAN tags are physical parameters.

A.It gets updated automatically when you commit.
B.You need to create it by issuing request system configuration rescue save.
C.It is rollback file number 50 and you can recover it by issuing rollback 50.
D.You can load it by entering rollback rescue.