Final answer:
The command that a technician would use to display network connections on a host computer is netstat.
Step-by-step explanation:
The command that a technician would use to display network connections on a host computer is netstat. Netstat is a command-line tool that shows active network connections, listening ports, and routing tables on a host. It provides detailed information about each active connection, including the protocol, local and remote IP addresses, and the state of the connection.