What command can help resolve network interface card (NIC) configuration issues?

The command that can help resolve network interface card (NIC) configuration issues is nmcli. This command is a command-line interface used to manage NetworkManager, a service that handles network connections in many Linux distributions. With nmcli, users can check the status of their network devices, manage connections, and configure or troubleshoot network settings.

For example, using nmcli, you can view your network connections and their statuses, enable or disable specific connections, and even modify the configuration of network interfaces. This makes it a powerful tool for diagnosing and fixing issues related to network connectivity.

In contrast, ifconfig is an older command used to configure and display network interfaces but has been largely supplanted by the "ip" command in modern distributions. The ipconfig command is specific to Windows systems and is not available in Linux environments. The netstat command is primarily used for displaying network connections, routing tables, interface statistics, and other networking-related information, but it does not configure network interfaces directly. This makes nmcli the most suitable choice for addressing NIC configuration problems.