The given list of network standards corresponds to different physical media:
- **10Base5**: Also known as thick coaxial cable (I), it was one of the original Ethernet standards.
- **10Base2**: Known as thin coaxial cable (II), it is another Ethernet standard for local area networking.
- **10Base-T**: This standard uses twisted pair cables (IV), which is one of the most common cable types in modern networking.
- **10Base-F**: This standard uses fiber optics (III) for faster data transmission and higher resistance to interference.
Thus, the correct matching is **A - I, B - II, C - III, D - IV**.