Cisco ENCOR Practice Exam 2025 – All-in-One Comprehensive Guide to Mastering Enterprise Network Core Technologies!

SPT in multicast routing refers to Shortest Path Tree. In multicast routing protocols, such as Protocol Independent Multicast (PIM), SPT is used to define the most efficient route for multicast data distribution. The Shortest Path Tree is constructed based on the shortest distance from the source of the multicast stream to each recipient. This results in a tree structure where each node represents a router, and the paths reflect the minimal hop counts required to reach the receivers.

This approach is beneficial because it optimizes network resources and minimizes latency, ensuring that multicast traffic reaches its destinations with maximum efficiency. When a source sends multicast traffic, the routers in the network will utilize SPT to forward packets along the paths that have the least number of hops, effectively improving performance and reducing potential bottlenecks.

In contrast, other options such as Static Path Tree, Shared Path Tree, and Standard Path Tree do not represent the commonly accepted terminology for multicast routing in the context of routing protocols. While Shared Path Tree is a valid concept in certain multicast scenarios, it typically refers to a distinct multicast routing strategy that utilizes a common tree structure for all sources, rather than focusing on the individual paths that minimize distance like SPT does. Understanding the significance of SPT is crucial for network