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

Security Control And Data Acquisition

Answer

System Command And Data Authorization

Answer

Supervisory Command And Data Analysis

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

Modbus RTU

Answer

BACnet

Answer

PROFIBUS

Question 3

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

Accepted Answer

An industrial digital computer used to automate electromechanical processes

Answer

A network firewall designed for OT environments

Answer

A software application for visualizing industrial data

Answer

A communication gateway between IT and OT networks

Question 4

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

Accepted Answer

Function Code 03

Answer

Function Code 01

Answer

Function Code 05

Answer

Function Code 15

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

A protocol for encrypted communications between PLCs

Answer

A hardware device that bridges SCADA to the internet

Answer

A firewall specifically designed for operational technology networks

Question 6

What is the primary security concern with legacy SCADA systems?

Accepted Answer

They often lack built-in encryption and authentication because they were designed before cybersecurity was a concern

Answer

They generate excessive log volumes that overwhelm SIEM systems

Answer

They use proprietary hardware that is too expensive to replace

Answer

They cannot be monitored by modern security tools

Question 7

Which industrial protocol is the standard for building automation systems, including HVAC, lighting, and access control?

Accepted Answer

BACnet

Answer

Modbus

Answer

DNP3

Answer

PROFINET