Which standard below does NOT specify fiber optic cabling as its physical media?

A.
1000BaseSX

B.
100BaseFX

C.
1000BaseCX

D.
1000BaseLX

Explanation:
1000BaseCX refers to 1000Mbps baseband copper cable, using two pairs of 150 ohm balanced cable
for CSMA/CD LANs. * 100BaseFX, specifies a 100 Mbps baseband fiber optic CSMA/CD LAN. Answer
c, 1000BaseLX, specifies a 1000Mbps CSMA/CD LAN over long wavelength fiber optics. *
1000BaseSX, specifies a 1000Mbps CSMA/CD LAN over short wavelength fiber optics.