Learn how Spanning Tree Protocol uses exchanged switch information to select a loop-free Layer 2 topology, control redundant paths, and transition interfaces safely.
Intermediate12 min read
Ethernet and Switching lessonNetworkingPractice
UNTIMED COACHING
Practice before the pressure
Use feedback to correct the model, not merely memorize an option position.
GUIDED PRACTICE
Practice the lesson questions
Answer normal lesson questions without a timer. Every answer includes an explanation, and incorrect answers can be tried again before continuing.
20 questions balanced across the lesson's key topics
At least four explanatory diagrams or tables
Retry freely, without a timer or score
CONCEPT MODELS
See the lesson as a system
Use these visual guides to connect the key ideas before answering the questions.
STP builds a controlled treeSTP preserves alternate Layer 2 links while selecting a loop-free forwarding structure.Interface states control forwardingAn interface changes state as STP evaluates whether it should participate in forwarding.