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ISA-IEC-62443 ISA/IEC 62443 Cybersecurity Fundamentals Specialist Questions and Answers

Questions 4

Which steps are included in the ISA/IEC 62443 assess phase?

Available Choices (select all choices that are correct)

Options:

A.

Cybersecurity requirements specification and detailed cyber risk assessment

B.

Cybersecurity requirements specification and allocation of IACS assets to zones and conduits

C.

Detailed cyber risk assessment and cybersecurity maintenance, monitoring, and management of change

D.

Allocation of IACS assets to zones and conduits, and detailed cyber risk assessment

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Questions 5

Which of the following is the underlying protocol for Ethernet/IP?

Available Choices (select all choices that are correct)

Options:

A.

Building Automation and Control Network (BACnet)

B.

Common Industrial Protocol

C.

Highway Addressable Remote Transducer (HART)

D.

Object Linking and Embedding (OLE) for Process Control

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Questions 6

Which analysis method is MOST frequently used as an input to a security risk assessment?

Available Choices (select all choices that are correct)

Options:

A.

Failure Mode and Effects Analysis

B.

Job Safety Analysis

C.

Process Hazard Analysis (PHA)

D.

System Safety Analysis (SSA)

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Questions 7

What is a key aspect of the relationship between physical security measures and cybersecurity?

Options:

A.

Cybersecurity is irrelevant.

B.

Physical security is more important.

C.

They should operate independently.

D.

They should complement each other.

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Questions 8

What does Foundational Requirement 6 (FR 6) - Timely Response to Events (TRE) require?

Options:

A.

Control access to information

B.

Protect against unauthorized operation

C.

Notify the proper authority about security violations

D.

Ensure adequate responses to network resource requests

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Questions 9

What type of attack is characterized by encrypting an organization’s data and demanding payment for restoration?

Options:

A.

Phishing

B.

Ransomware

C.

DDoS attack

D.

Malware variant

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Questions 10

Which of the following is the BEST example of detection-in-depth best practices?

Available Choices (select all choices that are correct)

Options:

A.

Firewalls and unexpected protocols being used

B.

IDS sensors deployed within multiple zones in the production environment

C.

Role-based access control and unusual data transfer patterns

D.

Role-based access control and VPNs

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Questions 11

Which of the following technologies is no longer considered secure?

Options:

A.

Secure Sockets Layer (SSL)

B.

Transport Layer Security (TLS)

C.

Digital Encryption Standard (DES)

D.

Advanced Encryption Standard (AES)

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Questions 12

Which is a reason for

and physical security regulations meeting a mixed resistance?

Available Choices (select all choices that are correct)

Options:

A.

Regulations are voluntary documents.

B.

Regulations contain only informative elements.

C.

Cybersecurity risks can best be managed individually and in isolation.

D.

There are a limited number of enforced cybersecurity and physical security regulations.

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Questions 13

Which of the following can be employed as a barrier device in a segmented network?

Available Choices (select all choices that are correct)

Options:

A.

Router

B.

Unmanaged switch

C.

VPN

D.

Domain controller

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Questions 14

In a defense-in-depth strategy, what is the purpose of role-based access control?

Available Choices (select all choices that are correct)

Options:

A.

Ensures that users can access systems from remote locations

B.

Ensures that users can access only certain devices on the network

C.

Ensures that users can access only the functions they need for their job

D.

Ensures that users correctly manage their username and password

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Questions 15

Which characteristic is MOST closely associated with the deployment of a demilitarized zone (DMZ)?

Available Choices (select all choices that are correct)

Options:

A.

Level 4 systems must use the DMZ to communicate with Level 3 and below.

B.

Level 0 can only interact with Level 1 through the firewall.

C.

Internet access through the firewall is allowed.

D.

Email is prevented, thereby mitigating the risk of phishing attempts.

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Questions 16

Which is one of the PRIMARY goals of providing a framework addressing secure product development life-cycle requirements?

Available Choices (select all choices that are correct)

Options:

A.

Aligned development process

B.

Aligned needs of industrial users

C.

Well-documented security policies and procedures

D.

Defense-in-depth approach to designing

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Questions 17

To which category of the ISA-62443 (IEC 62443) series does the document titled “Patch management in the IACS environment” belong?

Options:

A.

System

B.

General

C.

Component

D.

Policies and Procedures

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Questions 18

Which is the PRIMARY reason why Modbus over Ethernet is easy to manaqe in a firewall?

Available Choices (select all choices that are correct)

Options:

A.

Modbus uses a single master to communicate with multiple slaves usinq simple commands.

B.

Modbus is a proprietary protocol that is widely supported by vendors.

C.

Modbus uses explicit source and destination IP addresses and a sinqle known TCP port.

D.

Modbus has no known security vulnerabilities, so firewall rules are simple to implement.

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Questions 19

What type of cyberattack was discussed in the Ukrainian power grid case study?

Options:

A.

Internal sabotage

B.

Nation state

C.

Insider threat

D.

Random hacking

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Questions 20

Why is it important to document the results of the initial/high-level risk assessment?

Options:

A.

To establish a baseline

B.

To reduce communication

C.

To skip future assessments

D.

To avoid stakeholder involvement

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Questions 21

Which layer is responsible for error checking and MAC addressing?

Options:

A.

Network

B.

Transport

C.

Application

D.

Data link

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Questions 22

Which of the following provides the overall conceptual basis in the design of an appropriate security program?

Available Choices (select all choices that are correct)

Options:

A.

Asset model

B.

Zone model

C.

Reference model

D.

Reference architecture

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Questions 23

Which of the following is NOT a strategy for deploying a WAN?

Options:

A.

Internet

B.

Enterprise WANs

C.

Local area networks

D.

Carrier-managed WANs

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Questions 24

What do the tiers in the NIST CSF represent?

Options:

A.

Stages of incident response

B.

Categories of cybersecurity threats

C.

An organization's cybersecurity profile

D.

Different types of cybersecurity software

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Questions 25

Which organization is responsible for the ISA 62443 series of standards?

Options:

A.

American National Standards Institute (ANSI)

B.

International Electrotechnical Commission (IEC)

C.

National Institute of Standards and Technology (NIST)

D.

European Telecommunications Standards Institute (ETSI)

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Questions 26

Which analysis method is MOST frequently used as an input to a security risk assessment?

Available Choices (select all choices that are correct)

Options:

A.

Failure Mode and Effects Analysis

B.

Job Safety Analysis (JSA)

C.

Process Hazard Analysis (PHA)

D.

System Safety Analysis (SSA)

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Questions 27

As related to IACS Maintenance Service Providers, when do maintenance activities generally start?

Options:

A.

During the design phase

B.

At the beginning of the project

C.

After the handover of the solution

D.

Before the handover of the solution

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Questions 28

What impact do increasing cybercrime attacks have?

Options:

A.

They primarily target personal devices.

B.

They focus solely on financial institutions.

C.

They affect suppliers of essential services.

D.

They lead to improved cybersecurity measures.

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Questions 29

Which of the ISA 62443 standards focuses on the process of developing secure products?

Available Choices (select all choices that are correct)

Options:

A.

62443-1-1

B.

62443-3-2

C.

62443-3-3

D.

62443-4-1

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Questions 30

What does the abbreviation CSMS round in ISA 62443-2-1 represent?

Available Choices (select all choices that are correct)

Options:

A.

Control System Management System

B.

Control System Monitoring System

C.

Cyber Security Management System

D.

Cyber Security Monitoring System

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Questions 31

Which is a commonly used protocol for managing secure data transmission on the Internet?

Available Choices (select all choices that are correct)

Options:

A.

Datagram Transport Layer Security (DTLS)

B.

Microsoft Point-to-Point Encryption

C.

Secure Telnet

D.

Secure Sockets Layer

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Questions 32

Which is a role of the application layer?

Available Choices (select all choices that are correct)

Options:

A.

Includes protocols specific to network applications such as email, file transfer, and reading data registers in a PLC

B.

Includes user applications specific to network applications such as email, file transfer, and reading data registers in a PLC

C.

Provides the mechanism for opening, closing, and managing a session between end-user application processes

D.

Delivers and formats information, possibly with encryption and security

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Questions 33

Which of the following ISA-99 (IEC 62443) Reference Model levels is named correctly?

Available Choices (select all choices that are correct)

Options:

A.

Level 1: Supervisory Control

B.

Level 2: Quality Control

C.

Level 3: Operations Management

D.

Level 4: Process

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Questions 34

What is recommended to use between the plant floor and the rest of the company networks?

Options:

A.

Hub

B.

Router

C.

Switch

D.

Firewall

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Questions 35

Which of the following is a recommended default rule for IACS firewalls?

Available Choices (select all choices that are correct)

Options:

A.

Allow all traffic by default.

B.

Allow IACS devices to access the Internet.

C.

Allow traffic directly from the IACS network to the enterprise network.

D.

Block all traffic by default.

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Questions 36

Which is the BEST practice when establishing security zones?

Available Choices (select all choices that are correct)

Options:

A.

Security zones should contain assets that share common security requirements.

B.

Security zones should align with physical network segments.

C.

Assets within the same logical communication network should be in the same security zone.

D.

All components in a large or complex system should be in the same security zone.

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Questions 37

What is a frequent mistake made with cybersecurity management?

Options:

A.

Ignoring organizational culture

B.

Focusing solely on technology solutions

C.

Implementing too many security practices at once

D.

Initially addressing smaller pieces of the entire system

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Questions 38

Which of the following is NOT a general class of firewalls?

Options:

A.

Packet filter

B.

Network monitor

C.

Application proxy

D.

Stateful inspection

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Questions 39

What is one of the primary causes of cyber-related production losses in process control systems?

Options:

A.

Human error

B.

Hardware failure

C.

Malware incidents

D.

Network congestion

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Questions 40

Which factor drives the selection of countermeasures?

Available Choices (select all choices that are correct)

Options:

A.

Foundational requirements

B.

Output from a risk assessment

C.

Security levels

D.

System design

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Questions 41

Which protocol is commonly used for managing the security of message transmission on the Internet via web browsers?

Options:

A.

TLS

B.

L2TP

C.

PPTP

D.

IPsec

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Questions 42

Security Levels (SLs) are broken down into which three types?

Available Choices (select all choices that are correct)

Options:

A.

SL-1, SL-2, and SL-3

B.

Target.capability, and achieved

C.

Target.capability, and availability

D.

Target.capacity, and achieved

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Questions 43

Which standard is recognized as part of the NIST CSF Informative References?

Options:

A.

COBIT 5

B.

PCI DSS

C.

ISO 9001

D.

ISA/IEC 62443

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Questions 44

Which layer specifies the rules for Modbus Application Protocol

Available Choices (select all choices that are correct)

Options:

A.

Data link layer

B.

Session layer

C.

Presentation layer

D.

Application layer

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Questions 45

How many maturity levels (ML) are established for evaluation criteria according to ISA/IEC 62443-2-4?

Options:

A.

2

B.

3

C.

4

D.

5

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Exam Code: ISA-IEC-62443
Exam Name: ISA/IEC 62443 Cybersecurity Fundamentals Specialist
Last Update: Aug 13, 2025
Questions: 151

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