Practice Test Geeks(STP) Spanning Tree Protocol Practice Test
← All STP Flashcard Decks

Clinical & Scientific Knowledge Flashcards

7 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 7 Clinical & Scientific Knowledge flashcards as text

  1. Which RSTP (802.1w) port state is functionally equivalent to STP's combined Blocking, Listening, and Disabled states?

    Answer: Discarding

    RSTP consolidates STP's Disabled, Blocking, and Listening states into a single Discarding state.

  2. What is the primary advantage of MSTP (Multiple Spanning Tree Protocol) over PVST+?

    Answer: Fewer STP instances by mapping multiple VLANs to one instance

    MSTP maps multiple VLANs to a single spanning tree instance, reducing CPU and memory overhead compared to running one instance per VLAN.

  3. UplinkFast is a Cisco STP enhancement designed to speed up convergence in which specific scenario?

    Answer: Uplink failure on an access layer switch

    UplinkFast immediately activates a blocked alternate port when the primary uplink to an upstream switch fails.

  4. In STP, what port type does the designated port face?

    Answer: Away from the root bridge (downstream)

    Designated ports face downstream segments or end devices and are responsible for forwarding traffic away from the root bridge.

  5. What happens to STP topology when two switches have identical Bridge IDs?

    Answer: The switch with the lower MAC address wins

    If bridge priorities are equal, the switch with the numerically lower MAC address is elected root bridge.

  6. Which STP enhancement uses proposal and agreement messages to achieve rapid port role transitions?

    Answer: RSTP (802.1w)

    RSTP uses a point-to-point handshake (proposal/agreement) between switches to achieve near-instantaneous convergence without waiting for timers.

  7. BPDUFilter, when applied globally, differs from BPDUFilter applied per-port in what key way?

    Answer: Global BPDUFilter only suppresses BPDUs on PortFast-enabled ports but will re-enable if a BPDU is received

    Global BPDUFilter suppresses BPDUs only on PortFast ports and reverts to normal STP behavior if a BPDU is received; per-port BPDUFilter permanently disables BPDU sending and receiving.