题目内容
(请给出正确答案)
[主观题]
Routers A and B are connected with a point-to-point OC-3 interface. Each routers OC-3 inte
rface is configured for both Level 1 and Level 2. The routers are configured in different areas. How many IS-IS adjacencies exist between the two routers?()
A.0
B.1
C.2
D.3
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