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Question 1

What are the two types of Control Systems?

Answer 1

Open-loop, Closed-loop

Question 2

Which zone in the Purdue model is associated with business-related systems?

Answer 2

Enterprise Zone

Question 3

What is the main purpose of the Perception layer in CPS?

Answer 3

Measurement

Question 4

In Modbus, what is the function of Coils?

Answer 4

1-bit data that can be written to or read from

Question 5

Which protocol is commonly used for communication in ICS?

Answer 5

Modbus

Question 6

What does the Defense-in-Depth strategy involve?

Answer 6

Multiple layers of security

Question 7

Which attack type involves injecting false sensor signals to manipulate control logic?

Answer 7

Sensor erasure attack

Question 8

What is the purpose of the Transmission layer in CPS?

Answer 8

Transmitting data

Question 9

What does the acronym ICS stand for?

Answer 9

Industrial Control System

Question 10

Which layer in the Purdue model contains systems for monitoring and controlling physical processes?

Answer 10

Control Zone

Question 11

Which Modbus data type is 16-bit input data controlled by I/O?

Answer 11

Input register

Question 12

What is the main goal of the Closed-loop control system?

Answer 12

Continuously adjust output to maintain a desired state

Question 13

What is the primary challenge associated with CPS security?

Answer 13

Interoperability

Question 14

Which layer in the Purdue model involves physical processes, operations, and equipment?

Answer 14

Field Zone

Question 15

What is the primary function of the Application layer in CPS?

Answer 15

Computation

Question 16

What is the primary purpose of the Digital Twin model?

Answer 16

Detect anomalies

Question 17

Which attack involves blocking information from sensors to the controller?

Answer 17

DoS attacks

Question 18

What is the main purpose of the Enterprise Zone in the Purdue model?

Answer 18

Business-related systems

Question 19

Which protocol is commonly associated with the “master-slave” terminology?

Answer 19

Modbus

Question 20

What is the main function of Coils in Modbus?

Answer 20

1-bit data that can be written to or read from

Question 21

Which layer in the Purdue model involves hardware and software that detects or causes a change through direct monitoring and control of physical devices?

Answer 21

Operational Domain

Question 22

What is the primary difference between Open-loop and Closed-loop control systems?

Answer 22

No feedback on output

Question 23

Which type of attack involves injecting false sensor events or erasing genuine sensor events?

Answer 23

Sensor insertion attack

Question 24

What is the main purpose of the Transmission layer in CPS?

Answer 24

Transmitting data

Question 25

Which layer in the Purdue model involves information technology for the processing and distribution of data?

Answer 25

Technical Domain

Question 26

What is the primary purpose of the Control Zone in the Purdue model?

Answer 26

Monitoring and controlling physical processes

Question 27

Which Modbus data type is 16-bit output data controlled by the user program?

Answer 27

Holding register

Question 28

What is the primary challenge associated with CPS security?

Answer 28

Interoperability

Question 29

What type of attacks can be mitigated using Cryptographic-based solutions?

Answer 29

DoS attacks

Question 30

Which ICS component is responsible for controlling physical processes?

Answer 30

PLC