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Router R2 uses IS-IS to advertise the network 192.168.3.0/24 to R1. How can router R1 discard the route?
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Two neighboring OSPF routers have exchanged the packets shown. What state is the adjacency in?
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A static route has been configured on router R1 to reach the PC at 139.120.121.2. What might be causing the ping to fail?
An OSPF router receives an update in which the sequence number, age, and checksum are the same as the entry already in the topological database. What action is taken by the router?