on hearing my name you may think that i am interative, but i play a vital role in network by boosting the signal strenght to overcome attenuation. who am i?

A Network Repeater or Repeater

Explanation:

A Network Repeater also called Signal booster is an electronic device that receives a signal and retransmits the signals in such a way that can cover a wide range of distance without reducing the signal strength or causing Attenuation( a reduction or loss in signal strength which occurs when there is a transmission of signals over long distances).

An example is a Radio repeater.

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