Final answer:
Ethernet, Token Ring, FDDI, X.25, Frame Relay, RS-232, and V.35 are used in the Link layer of the TCP/IP model.
Step-by-step explanation:
The TCP/IP model is a network protocol suite that consists of several layers. The layers in the TCP/IP model are:
- Application layer
- Transport layer
- Network layer
- Link layer (also known as the Data Link layer)
In this question, the protocols mentioned (Ethernet, Token Ring, FDDI, X.25, Frame Relay, RS-232, V.35) are used at the Link layer of the TCP/IP model. The Link layer is responsible for the physical connection between nodes on a network and the transmission of data over that connection.