A.# set interfaces ge-0\/0\/0 unit 0 loopback
B.# set interfaces ge-0\/0\/0 gigether-options loopback
C. set interfaces ge-0\/0\/0 loopback
D. loopback ge-0\/0\/0
参考答案:B
A.# set interfaces ge-0\/0\/0 unit 0 loopback
B.# set interfaces ge-0\/0\/0 gigether-options loopback
C. set interfaces ge-0\/0\/0 loopback
D. loopback ge-0\/0\/0
参考答案:B