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JN0-660 · Question #452

What are two similarities between OSPF and IS-IS? (Choose two.)

The correct answer is A. Both use hello packets to form and maintain adjacencies. B. Both use the Dijkstra algorithm to construct a shortest-path tree. See the full explanation below for the reasoning.

Question

What are two similarities between OSPF and IS-IS? (Choose two.)

Options

  • ABoth use hello packets to form and maintain adjacencies.
  • BBoth use the Dijkstra algorithm to construct a shortest-path tree.
  • CBoth elect a designated router and a backup designated router.
  • DBoth have a built-in mechanism to provide address summarization between areas.

How the community answered

(44 responses)
  • A
    82% (36)
  • C
    7% (3)
  • D
    11% (5)

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