Convergence and Reconvergence JN0-364 Practice Questions (Page 1)

Questions 1–5

1. 1application · medium

   A network administrator is configuring RSTP on a switch that connects to a legacy hub. The hub connects multiple end devices, and the administrator wants to ensure the port is treated as a point-to-point link for rapid convergence. Which configuration is required?

   • ASet the port to full-duplex mode.
   • BEnable edge mode on the port.
   • CConfigure the port as a shared link.
   • DDisable RSTP on the port and use STP instead.
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   A network administrator is configuring RSTP on a switch that connects to a server farm. The server farm has multiple servers connected to the switch, and the administrator wants to ensure that the server ports do not cause topology changes when servers are rebooted. Which configuration should be applied?

   • AConfigure the server ports as shared links.
   • BDisable RSTP on the server ports.
   • CSet the server ports to a higher port cost.
   • DEnable edge mode on the server ports.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   A network engineer is troubleshooting a link failure between two RSTP switches. The link was the root port on one of the switches. After the failure, the switch must select a new root port and reconverge. Which mechanism allows RSTP to achieve rapid reconvergence in this scenario?

   • AThe switch uses its alternate port, which is already in a discarding state but ready to transition to forwarding.
   • BThe switch flushes its MAC address table and recalculates the spanning tree from scratch.
   • CThe switch waits for the forwarding delay timer to expire before transitioning the new root port.
   • DThe switch immediately sends a topology change notification to the root bridge.
   Reveal Solution Discussion Select an answer first
5. 4expert · hard

   A service provider has a network with two core switches and multiple access switches using RSTP. A new access switch is added to the network, and the administrator notices that the new switch takes several seconds to converge. The new switch has a lower bridge priority than the existing switches. What is the most likely cause of the slow convergence?

   • AThe new switch is configured with STP instead of RSTP.
   • BThe new switch is not configured with edge ports on its access-facing interfaces.
   • CThe new switch has a higher port cost than the existing switches, causing a delay in path selection.
   • DThe new switch becomes the root bridge, and the proposal/agreement handshake must complete on all links.
   Reveal Solution Discussion Select an answer first
6. 5application · medium

   A service provider is deploying a new access switch to connect two customer-facing VLANs. The switch has several ports connecting to end-user routers and one uplink to the aggregation switch. The network administrator wants to ensure that the end-user ports transition to forwarding immediately without any handshake delay, while the uplink must still participate in normal RSTP operation. Which configuration accomplishes this?

   • AConfigure all ports with RSTP enabled and rely on the default port cost to determine forwarding state.
   • BDisable RSTP on the end-user ports and enable it only on the uplink.
   • CConfigure the end-user ports with edge mode enabled and the uplink with RSTP enabled.
   • DSet the end-user ports to blocking mode and the uplink to forwarding mode manually.
   Reveal Solution Discussion Select an answer first