For a technician to test network connectivity to a remote host on a Unix Server which of the following commands should they run?

IPCONFIG is a command used on Windows systems to display and configure TCP/IP network settings, not a standard command for Unix servers to test connectivity.

The PING command uses ICMP echo requests and replies to verify reachability and measure round-trip time to a network host. This command is a fundamental tool across Unix-like operating systems for diagnosing basic network connectivity issues to a remote destination.

ARP (Address Resolution Protocol) is used to display or manipulate the ARP cache, which maps IP addresses to MAC addresses, and is not for testing end-to-end network connectivity.

IFCONFIG is a Unix-like command used to configure or display network interface parameters, not to test connectivity to a remote host.