Which ISO class associates a frequency of 16 MHz with balanced twisted-pair cabling channel performance?

The correct answer is associated with ISO class C because this classification specifies the cabling performance criteria for balanced twisted-pair cabling systems, particularly in terms of frequency and data transmission capabilities.

ISO class C supports a frequency range up to 16 MHz, which is significant for applications requiring moderate data rates. This frequency level allows for effective transmission of data, accommodating various networking protocols and ensuring reliable communication in structured cabling systems.

Classes A and B pertain to performance parameters at lower frequencies, which do not meet the requirements for higher data rates associated with class C. Class D, on the other hand, covers higher frequency ranges starting from 100 MHz, thus it does not apply to the specified frequency of 16 MHz. This specificity of class C makes it crucial for understanding cabling performance standards in networks utilizing balanced twisted-pair cables.