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Q7- (2 points) Consider the virtual circuit network below (i.e., switches maintain virtual circuit tables), Tables below show, for each switch, what (or ) pairs are connected to other. Assuming connections are bidirectional, list all endpoint-to-endpoint connections. That means, which nodes have established connections with each other. Switch S1 Switch S2 Switch S3 Port VCI Port VCI Port VCI Port VCI Port VCI Port VCI