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單項(xiàng)選擇題

You are running OSPF between two ERX Edge Routers across an OC-12c link with HDLC encapsulation.
How many designated routers are present for this link?（）

A.0
B.1
C.2
D.3

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單項(xiàng)選擇題

What is the default authentication method on an OSPF interface?（）

A.A
B.B
C.C
D.D

多項(xiàng)選擇題

What are the three OSPF authentication methods supported on the ERX Edge Router?（）

A.A
B.B
C.C
D.D
E.E

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