What is a common reason for configuring multicast in a network?

Configuring multicast in a network is primarily done to reduce bandwidth usage when transmitting data to multiple destinations. Unlike unicast communication, where a single sender transmits data to a single receiver, multicast allows a sender to send a single data stream that can be received by multiple specific receivers simultaneously. This is particularly beneficial in applications such as video streaming, online gaming, or live broadcasts, where the same content is delivered to numerous users. By using multicast, the network conserves bandwidth because the data packets are not duplicated for each receiver, resulting in more efficient utilization of network resources.

The other options, while relevant in certain contexts, do not align with the primary function of multicast. Enhancing network security typically involves protocols and measures that focus on safeguarding data and devices, rather than the distribution model of the data itself. Increasing the number of devices on a network is more associated with scaling infrastructure and doesn't directly correlate to the purpose of multicast. Lastly, although IP address management is essential in networking, multicast does not inherently simplify this process; it's mainly concerned with efficient data distribution.