Red Seal Electrician Practice
Signalling and communicationQuestion 141 of 1506

How does a master/slave protocol avoid collisions?

  1. Nodes wait for the network to be silent, and then they guess at a slot
  2. Nodes pass a token in turn
  3. Nodes use random delays
  4. The master gives each node a time slot to transmit, one at a time
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Correct answer: The master gives each node a time slot to transmit, one at a time

The master addresses each node by name.

Source: Lessons in Electric Circuits IV: Digital (Kuphaldt), 14.7: Network Protocols

Practice signalling and communication

Questions last reviewed: 18 October 2026