Refer to the exhibit. You are designing a spanning-tree network for a small campus. Which two of these options would result in a trouble-free spanning-tree network design? (Choose two.)

Converting ports to trunks while actively pruning unused VLANs limits the number of active STP instances per link, reducing the scope of topology change notifications and the risk of widespread forwarding disruptions across the campus.

Introducing Layer 3 SVIs segments the network at Layer 3 and shrinks each STP domain to a single distribution block rather than allowing it to span the entire campus, which isolates topology change impacts and reduces convergence time.

BackboneFast accelerates convergence specifically for indirect link failures by allowing a switch to skip the Max Age timer, but it does not address fundamental STP design problems like excessive VLAN propagation or oversized spanning-tree domains.

UplinkFast is intended only for access-layer switches with redundant uplinks to speed convergence when a direct uplink fails; enabling it between all links including distribution and core tiers can cause unintended MAC address flooding and STP instability.