If you use the ping command to send an echo request from one host to the other, then which of the following protocols have you used?

If you use the ping command to send an echo request from one host to the other, the protocol that is used is ICM protocol.

Explanation:

When the router encounters a hindrance in the delivery of an internet packet, it registers an error. This error message is sent using the internet control message protocol commonly known as ICMP. Other than error messages, this protocol is also used in automated exchange of operational information.

The adams apple, or laryngeal prominence. is a feature of the human neck, and is the lump or protrusion that is formed by the angle of the thyroid cartilage surrounding the larynx seen especially in males.