CPT Computer Systems & Software Updates 3

Question 1

Which of the following best describes a 'hot standby' redundancy configuration in a process control computer system?

Accepted Answer

A secondary system running in parallel that takes over instantly on primary failure

Answer

Hot standby means the secondary system is live and synchronized so it can assume control immediately without operator intervention.

Question 2

In industrial cybersecurity, what is an 'air gap'?

Accepted Answer

Physical or logical isolation of a control network from external networks

Answer

An air gap isolates the OT network from the internet or corporate IT network to prevent cyber intrusions.

Question 3

What is the primary function of an OPC server in a process plant?

Accepted Answer

To act as a standardized middleware that allows different software applications to share process data

Answer

OPC (OLE for Process Control) servers provide a standard data-sharing interface between controllers, historians, and HMI applications from different vendors.

Question 4

Which maintenance strategy schedules software updates based on elapsed time or usage cycles rather than detected faults?

Accepted Answer

Preventive maintenance

Answer

Preventive maintenance applies updates on a fixed schedule to reduce failure risk before problems occur.

Question 5

A process plant's control system logs show repeated 'memory overflow' errors on a workstation. What is the most likely corrective action?

Accepted Answer

Upgrade RAM or optimize/patch the software causing excessive memory use

Answer

Memory overflow errors indicate the application is consuming more RAM than available, requiring a hardware upgrade or software patch.

(CPT) Certified Process Technician Practice Test

(CPT) Certified Process Technician Practice Test

CPT Computer Systems & Software Updates 3