NAB Domain 4 Communication and Network Security Practice Test 2025 - Free Communication and Network Security Practice Questions and Study Guide

In a circuit-switched network, a dedicated circuit is established between endpoints for the duration of a communication session. This means that when two parties want to communicate, a complete, unbroken communication path is formed, allowing for a continuous flow of data. This circuit remains exclusive to the call until it is terminated, ensuring that there is a reliable and stable connection for the entirety of the conversation or data transfer.

This dedicated circuit approach contrasts with other types of networks, such as packet-switched networks, where data is broken into packets and may take different paths to reach the destination, potentially allowing for more efficient use of bandwidth but also introducing delays due to routing. Establishing a dedicated circuit provides a consistent quality of service, as the bandwidth is reserved solely for the connected parties. The establishment of this dedicated path is critical for applications that require real-time communication, such as voice calls, where delays or interruptions can significantly degrade the user experience.