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JN0-351 · Question #50

Which two statements correctly describe RSTP port roles? (Choose two.)

The correct answer is A. The designated port forwards data to the downstream network segment or device. D. The root port is responsible for forwarding data to the root bridge. An RSTP topology contains ports that have specific roles: The root port is responsible for forwarding data to the root bridge. The alternate port is a standby port for the root port. When a root port goes down, the alternate port becomes the active root port. The designated…

Advanced Spanning-Tree Protocols

Question

Which two statements correctly describe RSTP port roles? (Choose two.)

Options

  • AThe designated port forwards data to the downstream network segment or device.
  • BThe backup port is used as a backup for the root port.
  • CThe alternate port is a standby port for an edge port.
  • DThe root port is responsible for forwarding data to the root bridge.

How the community answered

(33 responses)
  • A
    76% (25)
  • B
    9% (3)
  • C
    15% (5)

Explanation

An RSTP topology contains ports that have specific roles: The root port is responsible for forwarding data to the root bridge. The alternate port is a standby port for the root port. When a root port goes down, the alternate port becomes the active root port. The designated port forwards data to the downstream network segment or device. The backup port is a backup port for the designated port. When a designated port goes down, the backup port becomes the active designated port and starts forwarding data.

Topics

#RSTP port roles#designated port#root port#alternate port

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