What is the purpose of the command 'traceroute'?

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The command 'traceroute' is used to identify the path taken by packets to reach a specific destination across a network. When executed, it sends out packets and records the route these packets take through each intermediary device, such as routers, on the way to the destination. This information is significant for diagnosing network issues, understanding latency, and optimizing network performance. By showing each hop along the route, it helps network administrators identify where delays might be occurring, which devices are involved in the packet delivery, and can assist in troubleshooting connectivity problems.

The other options do not accurately describe the function of the 'traceroute' command. It doesn’t measure upload speed, identify the number of devices on the network, or configure routing protocols, as those tasks involve different commands and tools within network management.