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JN0-643 · Question #171

Based on the exhibit, which statement about the Layer 2 topology is true?

The correct answer is A. A port on switch 3 or switch 4 towards the CST root (switch 6) is blocking traffic. See the full explanation below for the reasoning.

Question

Based on the exhibit, which statement about the Layer 2 topology is true?

Exhibit

JN0-643 question #171 exhibit

Options

  • AA port on switch 3 or switch 4 towards the CST root (switch 6) is blocking traffic.
  • BA total of 64 MST instances for MST region A and region B can be configured.
  • CMSTI BPDUs are exchanged between MST regions and the CST root bridge.
  • DIST BPDUs are exchanged only between switches 1 and 2, and between switches 6 and 7.

How the community answered

(18 responses)
  • A
    72% (13)
  • B
    6% (1)
  • C
    17% (3)
  • D
    6% (1)

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