Router B is an OSPF router connected to both Area 0 and Area 2. Area 2 has been configured as a totally stubby area.Which three LSA types does Router B suppress from Area 2? (Choose Three.)

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Referring to the exhibit, which statement is correct?

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Customer-1 wants the Service Provider to allow STP to operate normally on all ports but only allow the MX Series devices to manage the Layer 2 topology.
Referring to the exhibit, which feature needs to be implemented on all devices to accomplish this task?

An Ethernet bridge is configured such that all interfaces are in a single broadcast domain.Which two tasks does the bridge perform in response to receiving a frame with an unknown unicast destination MAC address? (Choose two.)

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Referring to the exhibit, R-1 and R-2 are connected with a LAG on the ae0 interface.
However, the LAG is not operational.
Which action will solve this problem?