What is MSTP used to achieve in VLAN deployments?

• A. Maps VLANs to a single spanning-tree
• B. Maps multiple VLANs to multiple STP instances for scalable loop-free topologies
• C. Replaces Ethernet
• D. Increases network loops

Answer: (D)

MSTP is used to create scalable, loop-free networks in VLAN deployments by organizing multiple spanning-tree instances and mapping VLANs to those instances. Instead of running one global tree for every VLAN, MSTP lets you group VLANs into different MST instances, so each instance can have its own forwarding paths. This lets traffic for some VLANs take one set of links while traffic for other VLANs uses different links, improving load balancing and scalability. The result is a topology that avoids loops while efficiently using available links, especially as the number of VLANs grows. It doesn’t replace Ethernet and it doesn’t aim to increase loops; rather, it prevents loops and provides multiple, controlled paths for VLAN traffic.