Which of the following internet service types requires filters to be installed on telephone lines at the location?

Fiber internet uses optical cables to transmit data as light signals and does not utilize or interfere with traditional telephone lines, thus requiring no filters on them.

Digital Subscriber Line (DSL) internet service transmits data over traditional copper telephone lines, but it requires special filters (often called DSL filters or splitters) to separate the data signals from voice signals, preventing interference and allowing both services to operate simultaneously on the same line.

Cable internet uses coaxial cables that are separate from telephone lines for data transmission and therefore does not require filters on telephone lines.

Satellite internet uses a satellite dish to communicate with satellites for internet access, operating independently of telephone lines and requiring no filters.