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 Windows-only command that displays local IP configuration; the Unix equivalent is ifconfig or ip, and neither tests remote connectivity.

PING sends ICMP Echo Request packets to the specified remote host and reports whether replies are received, measuring round-trip time and packet loss - making it the standard tool for verifying basic network reachability on Unix servers.

ARP (Address Resolution Protocol) displays or manipulates the local ARP cache mapping IP addresses to MAC addresses; it does not test connectivity to a remote host.

IFCONFIG is the Unix command for displaying and configuring local network interfaces; it does not send packets to or test reachability of a remote host.