A consensus standard published by the National Fire Protection Association (NFPA); commonly called "code".

NetBIOS is an acronym for Network Basic Input/Output System. It provides services related to the session layer of the OSI model allowing applications on separate computers to communicate over a local area network.

The unwanted and/or unintelligible signals picked up on a cable circuit.

The condition or position of contact prior to initiation or energizing, in this case, a closed condition.

The condition or position of contact prior to initiation or energizing, in this case, an open condition.