A circuit switch is a type of network switch that establishes a dedicated communication path between two endpoints for the duration of a call or data session. This means that once the connection is made, the entire bandwidth of the circuit is reserved for that specific communication, ensuring consistent and reliable transmission. Circuit switching is commonly used in traditional telephone networks, where a call requires a continuous connection between the caller and receiver. Unlike packet switching, which divides data into packets and sends them independently, circuit switching provides a stable connection, making it ideal for voice communication and real-time applications.