Build a deeper technical understanding of Border Gateway Protocol behavior through focused coverage of BGP configuration, path selection, and route filtering. This course addresses the protocol areas that determine how BGP routes are received, evaluated, selected, and controlled through policy. It is aimed at network engineers who need to work beyond basic BGP familiarity and examine the routing decisions made within a BGP environment. Configuration coverage establishes the context for BGP operation, while path-selection content examines the logic used to choose among available routes. Route-filtering coverage addresses the policy controls used to determine which prefixes and routes are accepted, advertised, or restricted. Together, these subjects support analysis of routing policy where multiple paths and external route announcements must be evaluated carefully. ENTERONE CPLL-BGP-V4.1 focuses specifically on BGP rather than presenting a broad survey of unrelated networking protocols. Its protocol deep-dive scope makes it relevant to engineers reviewing BGP routing behavior, assessing route-selection outcomes, or working with filtering policies that shape route exchange between BGP peers. The course title identifies configuration, path selection, and route filtering as its core technical subjects.