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Research and identify the common subprotocols associated with transmission control protocol (TCP) and internet protocol. Using a combination of text and graphic illustrations, explain their functions and how they correlate to the layers of the open systems connection (OSI) model. Examples of subprotocols include, but are not limited to: hypertext transfer protocol (HTTP), user diagram protocol (UDP), internet control message protocol (ICMP), internet group management protocol (IGMP), address resolution protocol (ARP), domain name system (DNS), network time protocol (NTP), file transfer protocol (FTP), and trivial file transfer protocol (TFTP).