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Which statement describes the term blocking in the operation of STP?

  • It is a port state that is enabled but does not forward any traffic to ensure that a loop does not occur.
  • It indicates that the port is in an administratively off position.
  • It indicates that the port has transitioned from a blocking state and can send or receive BPDUs, but cannot forward any other network traffic.
  • It is a port state that can modify the MAC address table with any network traffic that it receives, but only forwards BPDUs and not any other network traffic.
Explanation & Hints:

The statement that describes the term blocking in the operation of STP (Spanning Tree Protocol) is:

  • It is a port state that is enabled but does not forward any traffic to ensure that a loop does not occur.

Explanation:

In STP operation, the blocking state is used to prevent network loops by stopping data frames from being forwarded through a port, while still allowing the port to receive BPDU frames. Ports in the blocking state do not participate in frame forwarding, nor do they learn MAC addresses, thus effectively preventing the formation of loops in the network. This state is critical in the STP algorithm, ensuring that only one active path exists between any two nodes in the network, while redundant paths are put into a blocking state until they are needed due to a topology change.

For more Questions and Answers:

CCNPv8 ENCOR ( Version 8.0) – Chapters 1 – 5: L2 Redundancy Exam Answers Full 100%

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