A person is troubleshooting a network issue and needs to view all active connections and listening ports. Which Windows command should be used?

The `arp -a` command displays the ARP (Address Resolution Protocol) table, which maps IP addresses to MAC addresses. While useful for troubleshooting network layer issues, it does not provide information on active connections or listening ports, making it unsuitable for this specific troubleshooting task.

The `tracert` command is used to determine the path that a packet takes to reach a destination across the network. It shows the route and the time taken for each hop but does not provide information about active connections or listening ports, thus failing to serve the user's needs in this scenario.

The `ipconfig` command is utilized to display the current IP configuration of the machine, including IP address, subnet mask, and default gateway. While it is helpful for understanding network settings, it does not list active connections or listening ports, making it irrelevant for the task at hand.