SACA Cyber-Physical Systems 2

Question 1

In a cyber-physical system, what is the primary function of the physical layer?

Accepted Answer

To interact with the real world through sensors and actuators

Answer

To store configuration data in the cloud

Answer

To process machine learning algorithms

Answer

To manage user authentication

Question 2

Which concept describes the digital replica of a physical asset used for simulation and monitoring in cyber-physical systems?

Accepted Answer

Digital twin

Answer

Virtual machine

Answer

Shadow model

Answer

Simulation sandbox

Question 3

What communication standard is commonly used in cyber-physical systems to provide deterministic, real-time data exchange between control nodes?

Accepted Answer

OPC UA with TSN

Answer

HTTP/REST

Answer

MQTT over Wi-Fi

Answer

FTP over Ethernet

Question 4

Which security threat is most specific to cyber-physical systems compared to traditional IT systems?

Accepted Answer

Physical damage via manipulated control signals

Answer

Phishing emails

Answer

Browser-based cross-site scripting

Answer

Password brute force attacks

Question 5

In CPS architecture, what does 'closed-loop control' mean?

Accepted Answer

The system uses output feedback to continuously adjust its inputs

Answer

The network topology uses ring connections with no open endpoints

Answer

The PLC program runs in a locked execution mode

Answer

The system operates without external network connectivity

Question 6

What is the role of edge computing in modern cyber-physical systems?

Accepted Answer

To process data near the source to reduce latency and bandwidth usage

Answer

To replace all cloud infrastructure with local servers

Answer

To encrypt all data before sending to PLCs

Answer

To provide user interface displays at machine level