CISSP Practice Exam 2025 – Complete Prep Guide

BGP, or Border Gateway Protocol, is primarily used as a routing protocol for the Internet. It is designed to exchange routing information between different autonomous systems (AS), which are networks or collections of networks under a common administration. BGP helps ensure data packets are sent through the most efficient path across interconnected networks, allowing for the scalability and robustness required for global Internet routing.

By utilizing BGP, Internet Service Providers and large organizations can manage how data hops across multiple networks, contributing to the overall functionality and resilience of Internet traffic. It handles routing policies and ensures that traffic from one AS to another takes the optimal route, adjusting dynamically to changes and outages in the network.

In this context, the other options do not accurately describe the primary function of BGP. Encrypting data in transit is related to secure communication protocols rather than routing. Network intrusion detection pertains to security measures to monitor and respond to unauthorized access or anomalies in a network, which falls outside the realm of routing protocols. Managing IP addresses within a local network typically involves protocols like DHCP or static IP assignments rather than BGP, which operates at a broader, inter-network level.