Practice Test Geeks(STP) Spanning Tree Protocol Practice Test
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Troubleshooting STP Flashcards

6 cards from real STP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 Troubleshooting STP flashcards as text

  1. What is a broadcast storm in a switched network?

    Answer: Continuous flooding of broadcast frames caused by a Layer 2 loop, consuming all bandwidth

    A broadcast storm occurs when frames loop endlessly through redundant paths, multiplying exponentially and consuming all network bandwidth.

  2. How do you verify the current STP root bridge?

    Answer: Use show spanning-tree command to display root bridge ID, priority, and port roles

    The show spanning-tree command displays the root bridge information, local bridge details, and port states and roles.

  3. What are common symptoms of an STP failure?

    Answer: Network slowness, high CPU on switches, MAC address table instability, broadcast storms

    STP failures typically manifest as network-wide performance issues caused by looping traffic overwhelming switch resources.

  4. How do you change the STP root bridge priority?

    Answer: Configure a lower bridge priority value on the desired root bridge switch

    Setting a lower priority value (e.g., 4096) ensures the desired switch wins the root bridge election.

  5. What happens when a root bridge fails in STP?

    Answer: A new root bridge election occurs using the bridge with the next lowest bridge ID

    When the root bridge fails, the network automatically elects a new root bridge based on the next lowest bridge ID.

  6. What is the impact of a suboptimal STP topology?

    Answer: Traffic takes longer paths, increased latency, underutilized links, and potential congestion

    A poorly designed STP topology forces traffic along inefficient paths, wasting bandwidth on some links while overloading others.