Which choice best describes the term "packet-switched network"?

The term "packet-switched network" is best described as a networking method where data is sent in discrete blocks. In packet-switched networks, data is broken down into smaller packets before being transmitted over the network. Each packet can take different paths to reach its destination, where they are reassembled in the correct order. This approach contrasts with methods that require dedicated circuits because it allows for more efficient use of network resources, as multiple communications can occur simultaneously over the same connection.

Packet-switched networks are fundamental to how data is transmitted on the Internet, facilitating robust and flexible communication. This method enhances the network's ability to handle varying amounts of traffic and can efficiently route data around failures or congested areas. The use of discrete packets also improves error detection and correction, making the network more reliable overall.