Either electrical signaling establishes Ethernet communications over copper twisted pair cable or pulses of light transmitted over fiber optic cable. Where is the physical connection to the cable made in the computer using a transceiver port?

Cartoon network topology

a$.$

Network interface card $($NIC$)$

b$.$

Docking station

c$.$

Optical network terminal $($ONT$)$

d$.$

Digital subscriber line $($DSL$)$