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IBM's Token-Ring network uses

  • A.adaptive routing
  • B.source routing
  • C.alternative routing
  • D.spanned tree routing

Answer: A

Correct answer: source routing

In IBM's Token Ring the sending station discovers and carries the whole route in the frame, so the bridges simply follow the directions given rather than deciding for themselves. That is source routing, and it is what distinguishes Token Ring bridging from Ethernet's transparent bridging.

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