Vulnerabilities are often introduced into industrial control systems (ics) because of incomplete, inappropriate, or nonexistent security documentation.

Industrial control system (ICS)  is typically used in industries such as electrical, water and wastewater, oil and natural gas, chemical, transportation, pharmaceutical..
The components of the ICS system are: SCADA, PLCs, and RTUs, and other elements.
Policy and Procedure vulnerabilities are often introduced into industrial control systems (ICS) because of incomplete, inappropriate, or nonexistent security documentation.

Di think, lol but not 100% sure

Once the twisted pair cable is connected and a network is established the led lights at the back of the computer should be steady. on most ethernet adapters nowadays, a steady green light means that the connection is actively connected to a valid partner at the opposite end. if the status of the led starts flashing, this means that there’s some activity and data is being transferred.