CompTIA Network+ Practice Test

In a three-tier architecture, what does the distribution layer do?

1. Connects users directly to external networks

2. Manage the path from access switches to the core

3. Serves as the primary connection for web servers

4. Controls data flow only at the user level

The correct answer is: Manage the path from access switches to the core

In a three-tier architecture, the distribution layer plays a critical role in managing the communication between different segments of the network, specifically between access switches and the core layer. This layer is responsible for routing data, making it essential for effective data management and traffic control across the network. By managing paths from access switches to the core layer, the distribution layer ensures that data can be efficiently directed and that various network segments can communicate seamlessly. This strategic function also allows for implementation of policies like traffic filtering and the aggregation of connection points, thereby optimizing performance and enhancing security. The other options do not accurately represent the function of the distribution layer. While connecting users directly to external networks typically falls under the responsibilities of the core layer, managing traffic flow specifically at the user level is mainly a function of the access layer. Serving as the primary connection for web servers is also associated with core functions, as those servers usually need high-level connectivity and routing capabilities. Thus, the distribution layer’s primary role is clear in its task of connecting and managing traffic routes, which is vital for a well-structured network infrastructure.