STP, RSTP, MSTP, and VSTP Concepts JN0-364 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   Which two port states in the original 802.1D STP are transitional and do not forward traffic?

   • ABlocking and Disabled
   • BForwarding and Blocking
   • CListening and Learning
   • DLearning and Forwarding
   Reveal Solution Discussion Select an answer first
2. 7foundation · easy

   Which Junos operational command displays the spanning tree protocol status, including port roles and states?

   • Ashow stp
   • Bshow rstp
   • Cshow spanning-tree
   • Dshow protocols stp
   Reveal Solution Discussion Select an answer first
4. 8expert · hard

   A network administrator is comparing VSTP and MSTP for a network with 50 VLANs. The administrator wants to provide per-VLAN load balancing and minimize the number of spanning tree instances. Which protocol should the administrator choose, and why?

   • AVSTP, because it uses RSTP for rapid convergence.
   • BMSTP, because it runs a single instance for all VLANs.
   • CVSTP, because it runs a separate instance for each VLAN, providing the most granular load balancing.
   • DMSTP, because it allows grouping VLANs into a smaller number of instances, reducing overhead while still providing per-VLAN load balancing.
   Reveal Solution Discussion Select an answer first
5. 9expert · hard

   In an RSTP network, a switch has two ports connected to the same segment (e.g., via a hub). One port is the designated port, and the other is in a discarding state. What role is the discarding port, and what is its purpose?

   • ARoot port, providing the best path to the root bridge.
   • BBackup port, providing a backup to the designated port on the same segment.
   • CAlternate port, providing a backup path to the root bridge.
   • DDisabled port, because it is not part of the spanning tree.
   Reveal Solution Discussion Select an answer first
6. 10expert · hard

   A network administrator is troubleshooting a convergence issue in an RSTP network. The administrator notices that a port is not transitioning to forwarding as quickly as expected. The port is connected to a switch that does not support RSTP and is running standard STP. What is the most likely cause of the slow convergence?

   • AThe port is configured as an edge port.
   • BThe port is a backup port.
   • CThe port is a root port.
   • DThe RSTP switch is falling back to STP on that port.
   Reveal Solution Discussion Select an answer first