CompTIA Network+ Practice Test

Which type of crosstalk is measured away from the transmitter?

1. Near End Crosstalk (NEXT)

2. Attenuation

3. Far End Crosstalk (FEXT)

4. Alien Crosstalk (AXT)

The correct answer is: Far End Crosstalk (FEXT)

Far End Crosstalk (FEXT) is measured away from the transmitter, which directly pertains to the way signal interference occurs in a network cable system. In the context of cabling, crosstalk refers to the unwanted transfer of signals between communication channels, and FEXT specifically occurs when the crosstalk originates from a signal source that is further along the line, impacting a receiver located at the far end of the cable run. In practical terms, as data signals travel through a cable, they can induce interference in neighboring pairs, and FEXT will be relevant for those connections positioned further away from the source of the original signal. The measurement of FEXT is essential for assessing the quality of a link, especially in environments with multiple cables running close together, where such interactions can degrade performance. Other types of crosstalk and signal degradation were also included, but they do not achieve the same context as FEXT does in this situation. Near End Crosstalk (NEXT) is measured at the same end as the transmitter and measures interference at the point of transmission. Attenuation refers to the gradual loss of signal strength over distance, which is a different concept altogether. Alien Crosstalk (AXT) is crosst