Step 1: Definitions.
- Router: A network device that forwards data packets between networks → (II).
- Ethernet Card: Also known as NIC → (IV).
- Ring: A network topology → (I).
- PAN: A network type → (III).
Step 2: Match terms to definitions.
(A) matches (II), (B) matches (IV), (C) matches (I), (D) matches (III).
Final Answer: \[\boxed{(A)-(II), (B)-(IV), (C)-(I), (D)-(III)}\]