Advanced Spanning Tree Protocols (MSTP/VSTP) JN0-650 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   What is a common cause of MSTP switches failing to form a single region?

   • AMismatched region names or revision numbers.
   • BDifferent bridge priorities on the switches.
   • CIncorrectly configured root bridge.
   • DUsing different vendors for switches.
   Reveal Solution Discussion Select an answer first
2. 2foundation · easy

   How does a switch determine whether a neighboring switch belongs to the same MSTP region?

   • ABy checking if the neighbor's region name, revision number, and VLAN-to-instance mapping match its own.
   • BBy examining the neighbor's MAC address to see if it is from the same vendor.
   • CBy verifying that the neighbor supports MSTP and has the same software version.
   • DBy comparing the neighbor's bridge ID with its own.
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   Which statement accurately describes how MSTP operates in a network?

   • AMSTP uses a single spanning tree instance for all VLANs, regardless of configuration.
   • BMSTP maps multiple VLANs to a single spanning tree instance, allowing different instances to use different paths.
   • CMSTP runs a separate spanning tree instance for each VLAN, similar to VSTP.
   • DMSTP disables all redundant links to prevent loops, leaving only one active path per VLAN.
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   What is the primary purpose of Multiple Spanning Tree Protocol (MSTP) in a switched network?

   • ATo reduce the number of spanning tree instances by mapping multiple VLANs to a single instance, optimizing path utilization while reducing protocol overhead.
   • BTo eliminate all loops in the network by disabling redundant links entirely.
   • CTo provide faster convergence than RSTP by using a single instance for all VLANs.
   • DTo run a separate spanning tree instance for every VLAN, ensuring per-VLAN path optimization.
   Reveal Solution Discussion Select an answer first
6. 5expert · hard

   A network has a core running MSTP with two regions. An access switch running RSTP is connected to both regions via two links. The engineer wants to ensure that the RSTP switch can forward traffic to both regions without loops. What is the most important consideration?

   • AThe RSTP switch must run VSTP to interoperate with MSTP regions.
   • BThe RSTP switch must be configured with the same region name and revision as the MSTP regions to interoperate.
   • CThe RSTP switch will see each MSTP region as a single bridge, and it will block one of the links to prevent a loop.
   • DThe two MSTP regions must be merged into one region for the RSTP switch to work correctly.
   Reveal Solution Discussion Select an answer first