Cisco Certified Network Associate (CCNA) Practice Exam

What is the purpose of the global addressing extension in Frame Relay?

1. To optimize network performance

2. To make DLCIs globally significant

3. To enhance security features

4. To increase the speed of data transmission

The correct answer is: To make DLCIs globally significant

The global addressing extension in Frame Relay is primarily intended to make Data Link Connection Identifiers (DLCIs) globally significant. By allowing DLCIs to be unique across the entire service provider's network, rather than just within a single local segment, the global addressing extension facilitates better management and routing of frames in a Frame Relay environment. This uniqueness means that frames can be routed appropriately without confusion, even if multiple end users utilize similar DLCIs on different segments of the provider’s network. Consequently, this enables seamless communication and connectivity across diverse geographical areas, making the network more efficient and less prone to address conflicts. The other options do address important concepts, but they do not directly relate to the primary goal of this global addressing feature in Frame Relay. For example, optimizing network performance, enhancing security, or increasing speed may form part of the broader functionality of Frame Relay, but they are not directly tied to the purpose of making DLCIs globally significant.