"An" is one of two indefinite articles.
Hmm... I wanna say either 1 or 4? but I could be wrong-
<span>The noise factor involves how immune a communication medium is to outside electronic interference. When creating a global communications network, an IT manager must balance the costs and results for the quality of fiber optics and components. Transmission strength and bandwidth are also keys to quality telecommunications. Without the right network and protocol, the network is useless.</span>
Justice is a value that is shared across religions, cultures and even time. A sense of justice can lead us to make right decisions on current problems.