ICS SCADA & Industrial Protocol Security

Question 1

What does SCADA stand for in the context of industrial control systems?

Accepted Answer

Supervisory Control And Data Acquisition

Answer

SCADA stands for Supervisory Control And Data Acquisition, referring to systems that monitor and control industrial infrastructure.

Question 2

Which protocol is most widely used in SCADA systems for communication between master stations and Remote Terminal Units (RTUs), particularly in electric utilities?

Accepted Answer

DNP3

Answer

DNP3 (Distributed Network Protocol 3) was designed specifically for SCADA communication with RTUs, especially in the electric power and water industries, and supports time-stamped data.

Question 3

A Programmable Logic Controller (PLC) is best described as:

Accepted Answer

An industrial digital computer used to automate electromechanical processes

Answer

A PLC is a ruggedized industrial computer that continuously monitors inputs from sensors and executes programmed logic to control outputs such as motors and valves.

Question 4

Which Modbus function code is used to read the values of holding registers?

Accepted Answer

Function Code 03

Answer

Modbus Function Code 03 (Read Holding Registers) is used to read the contents of a contiguous block of holding registers in a remote device.

Question 5

What is a Human-Machine Interface (HMI) in an ICS environment?

Accepted Answer

A dashboard providing operators a visual representation of industrial processes for monitoring and control

Answer

An HMI is the operator interface that displays process data graphically, allowing operators to monitor system status and issue control commands.

(ICS) Industrial Control Systems Security Certification Practice Test

(ICS) Industrial Control Systems Security Certification Practice Test

ICS SCADA & Industrial Protocol Security