Final answer:
A technician should use the command ping -t to verify if a remote printer is back online after being power cycled. This command continuously sends echo requests to monitor the device's connectivity.
Step-by-step explanation:
To verify if a remote printer that has been power cycled is back online, the technician should use the command C. ping -t. The ping command is a network utility that is used to test the reachability of a host on an Internet Protocol (IP) network and to measure the round-trip time for messages sent from the originating host to a destination computer. The -t switch tells the ping command to continue sending echo requests to the host until it is manually stopped. This allows the technician to continuously monitor the printer's status as it comes back online.
For example, to ping a printer with the IP address 192.168.1.10, the technician would open a command prompt and enter ping -t 192.168.1.10. If the printer is online, the technician will see replies with the time it took for the packet to travel to the printer and back. If there are no replies, or the replies are inconsistent, this could indicate an issue with the printer's connectivity.