Red Seal Electrician Practice
Signalling and communicationQuestion 53 of 1506

What is a weakness of a bus topology?

  1. It needs a separate cable run for each node
  2. Nodes cannot be added without shutting down the network
  3. A break in the bus wiring can isolate groups of nodes
  4. It cannot be used with copper cable
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Correct answer: A break in the bus wiring can isolate groups of nodes

A bus is simple to install and nodes are easy to add, but all traffic shares one line.

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

Practice signalling and communication

Questions last reviewed: 18 October 2026