Answer
If node $\mathrm{B}$ failed, no other nodes in the network would be brought down,
although their communication delays might increase. Nodes $A, C, D, E, F$
could all send and receive messages from the other active nodes.
Work Step by Step
If node $\mathrm{B}$ failed, no other nodes in the network would be brought down,
although their communication delays might increase. Nodes $A, C, D, E, F$
could all send and receive messages from the other active nodes.
