Signalling and communicationQuestion 54 of 1506

In a star network with gateways, what can happen if one gateway fails?

  1. Every node in the network loses power at the same time as the gateway
  2. All traffic is moved over to the ring, which takes the place of the star
  3. The gateway repairs itself using a token that is passed to it
  4. A branch behind the failed gateway can lose contact with the other nodes
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Correct answer: A branch behind the failed gateway can lose contact with the other nodes

Gateways allow private groups, but they are a single point of failure for their branch.

Source: Lessons in Electric Circuits IV: Digital (Kuphaldt), 14.6: Network Topology

Practice signalling and communication

Questions last reviewed: 18 October 2026