What is the decibel loss of a signal that loses 25 of its po

What is the decibel loss of a signal that loses 25% of its power during the course of transmission? -0.125 dB -6.0 dB -12.5 dB -1.25 Networks that span a room, a building, or a campus are called: MANs LANs PANs WANS

Solution

1. 1.dB = 10 log10 (powerdrop) = 10log10(25/100) = 10log10(.25) = 10 (-0.6) = -6
   Power drop to 25 % means -6 dB

2. Local Area Network covers computers and other devices in a network within a distinct geographic area such as an office or a building.