[Jan 13, 2025] ISA-IEC-62443 PDF Dumps is essential on your ISA-IEC-62443 Exam Questions Certain Success! [Q16-Q36]

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[Jan 13, 2025] ISA-IEC-62443 PDF Dumps is essential on your ISA-IEC-62443 Exam Questions Certain Success! [Q16-Q36]

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[Jan 13, 2025] ISA-IEC-62443 PDF Dumps is essential on your ISA-IEC-62443 Exam Questions Certain Success!

ISA-IEC-62443 PDF Questions – Perfect Prospect To Go With ISA-IEC-62443 Practice Exam

Q16. Which is the implementation of PROFIBUS over Ethernet for non-safety-related communications?
Available Choices (select all choices that are correct)

PROFIBUS DP

PROFIBUS PA

PROFINET

PROF1SAFE

PROFINET is the implementation of PROFIBUS over Ethernet for non-safety-related communications. It is a standard for industrial Ethernet that enables real-time data exchange between automation devices, controllers, and higher-level systems. PROFINET uses standard Ethernet hardware and software, but adds a thin software layer that allows deterministic and fast communication. PROFINET supports different communication profiles for different applications, such as motion control, process automation, and functional safety. PROFINET is compatible with PROFIBUS, and allows seamless integration of existing PROFIBUS devices and networks123 References: 1: What is PROFINET? – PI North America 2: PROFINET – Wikipedia 3: PROFINET Technology and Application – System Description

Q17. What is OPC?
Available Choices (select all choices that are correct)

An open standard protocol for real-time field bus communication between automation technology
devices

An open standard protocol for the communication of real-time data between devices from different
manufacturers

An open standard serial communications protocol widely used in industrial manufacturing environments

A vendor-specific proprietary protocol for the communication of real-time plant data between control devices

Q18. Who must be included in a training and security awareness program?
Available Choices (select all choices that are correct)

Vendors and suppliers

Employees

All personnel

Temporary staff

Modbus over Ethernet, also known as Modbus/TCP, is a protocol that encapsulates the Modbus/RTU data string inside the data section of the TCP frame. It then sets up a client/server exchange between nodes, using TCP/IP addressing to establish connections1. This makes it easy to manage in a firewall, because the firewall can filter the traffic based on the source and destination IP addresses and the TCP port number. The default TCP port for Modbus/TCP is 502, but it can be changed if needed. Modbus/TCP does not use any other ports or protocols, so the firewall rules can be simple and specific. References:
* 8: Open Modbus/TCP Specification, RTA Automation, 2010.
* [9]: Modbus Application Protocol Specification V1.1b3, Modbus Organization, 2012.

Q19. Who must be included in a training and security awareness program?
Available Choices (select all choices that are correct)

Vendors and suppliers

Employees

All personnel

Temporary staff

Q20. Which layer specifies the rules for Modbus Application Protocol
Available Choices (select all choices that are correct)

Data link layer

Session layer

Presentation layer

Application layer

The Modbus Application Protocol is a messaging protocol that provides client/server communication between devices connected on different types of buses or networks. It is positioned at level 7 of the OSI model, which is the application layer. The application layer is the highest level of the OSI model and defines the rules and formats for data exchange between applications. The Modbus Application Protocol is independent of the underlying communication layers and can be implemented using different transport protocols, such as TCP/IP, serial, or Modbus Plus. The Modbus Application Protocoldefines the function codes, data formats, and error codes for Modbus transactions123 References:
* MODBUS APPLICATION PROTOCOL SPECIFICATION V1
* Modbus – Wikipedia
* Overview of Modbus – EPICS support for Modbus – GitHub Pages

Q21. Which is the PRIMARY objective when defining a security zone?
Available Choices (select all choices that are correct)

All assets in the zone must be from the same vendor.

All assets in the zone must share the same security requirements.

All assets in the zone must be at the same level in the Purdue model.

All assets in the zone must be physically located in the same area.

According to the ISA/IEC 62443-3-2 standard, a security zone is a grouping of systems and components based on their functional, logical, and physical relationship that share common security requirements. The primary objective of defining a security zone is to apply a consistent level of protection to the assets within the zone, based on their criticality and risk assessment. A security zone may contain assets from different vendors, different levels in the Purdue model, or different physical locations, as long as they have the same security requirements. A security zone may also be subdivided into subzones, if there are different security requirements within the zone. A conduit is a logical or physical grouping of communication channels connecting two or more zones that share common security requirements.
References:
* ISA/IEC 62443-3-2:2020, Security for industrial automation and control systems – Part 3-2: Security risk assessment for system design, Clause 4.3.21
* ISA/IEC 62443-1-1:2009, Security for industrial automation and control systems – Part 1-1:
Terminology, concepts and models, Clause 3.2.42

Q22. What type of security level defines what a component or system is capable of meeting?
Available Choices (select all choices that are correct)

Capability security level

Achieved security level

Design security level

Target security level

According to the IEC 62443 standard, a capability security level (SL-C) is defined as “the security level that a component or system is capable of meeting when it is properly configured and protected by an appropriate set of security countermeasures” 1. A component or system can have different SL-Cs for different security requirements, depending on its design and implementation. The SL-C is determined by testing the component or system against a set of security test cases that correspond to the security requirements. The SL-C is not dependent on the actual operational environment orconfiguration of the component or system, but rather on its inherent capabilities. References:
* IEC 62443 – Wikipedia

Q23. Which is a PRIMARY reason why network security is important in IACS environments?
Available Choices (select all choices that are correct)

PLCs are inherently unreliable.

PLCs are programmed using ladder logic.

PLCs use serial or Ethernet communications methods.

PLCs under cyber attack can have costly and dangerous impacts.

Network security is important in IACS environments because PLCs, or programmable logic controllers, are devices that control physical processes and equipment in industrial settings. PLCs under cyber attack can have costly and dangerous impacts, such as disrupting production, damaging equipment, compromising safety, and harming the environment. Therefore, network security is essential to protect PLCs and other IACS components from unauthorized access, modification, or disruption. The other choices are not primary reasons why network security is important in IACS environments. PLCs are not inherently unreliable, but they can be affected by environmental factors, such as temperature, humidity, and electromagnetic interference. PLCs are programmed using ladder logic, which is a graphical programming language that resembles electrical schematics. PLCs use serial or Ethernet communications methods, depending on the type and age of the device, to communicate with other IACS components, such as human-machine interfaces (HMIs), supervisory control and data acquisition (SCADA) systems, and distributed control systems (DCSs). References:
* ISA/IEC 62443 Standards to Secure Your Industrial Control System training course1
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide2
* Using the ISA/IEC 62443 Standard to Secure Your Control Systems3

Q24. Which of the following is a trend that has caused a significant percentage of security vulnerabilities?
Available Choices (select all choices that are correct)

IACS developing into a network of air-gapped systems

IACS evolving into a number of closed proprietary systems

IACS using equipment designed for measurement and control

IACS becoming integrated with business and enterprise systems

Q25. How many security levels are in the ISASecure certification program?
Available Choices (select all choices that are correct)

Q26. Authorization (user accounts) must be granted based on which of the following?
Available Choices (select all choices that are correct)

Individual preferences

Common needs for large groups

Specific roles

System complexity

Authorization is the process of granting or denying access to a network resource or function. Authorization (user accounts) must be granted based on specific roles, which are defined as sets of permissions and responsibilities assigned to a user or a group of users. Roles should be based on the principle of least privilege, which means that users should only have the minimum level of access required to perform their tasks. Roles should also be based on the principle of separation of duties, which means that users should not have conflicting or overlapping responsibilities that could compromise the security or integrity of the system.
Authorization based on individual preferences or common needs for large groups is not recommended, as it could lead to excessive or unnecessary access rights, or to inconsistent or conflicting policies. Authorization based on system complexity is also not a good criterion, as it could result in overcomplicated or unclear roles that are difficult to manage or audit. References:
* ISA/IEC 62443-3-3:2013 – Security for industrial automation and control systems – Part 3-3: System security requirements and security levels1
* ISA/IEC 62443-2-1:2010 – Security for industrial automation and control systems – Part 2-1:
Establishing an industrial automation and control systems security program2
* ISA/IEC 62443-4-1:2018 – Security for industrial automation and control systems – Part 4-1: Product security development life-cycle requirements3

Q27. Which layer in the Open Systems Interconnection (OSI) model would include the use of the File Transfer
Protocol (FTP)?
Available Choices (select all choices that are correct)

Application layer

Data link layer

Session layer

Transport layer

Q28. What does the abbreviation CSMS round in ISA 62443-2-1 represent?
Available Choices (select all choices that are correct)

Control System Management System

Control System Monitoring System

Cyber Security Management System

Cyber Security Monitoring System

The abbreviation CSMS stands for Cyber Security Management System in ISA 62443-2-1. This standard defines the elements necessary to establish a CSMS for industrial automation and control systems (IACS) and provides guidance on how to develop those elements123. A CSMS is a collection of policies, procedures, practices, and personnel that are responsible for ensuring the security of IACS throughout their lifecycle24. References: 1: ISA/IEC 62443 Series of Standards – ISA 2: ISA 62443-2-1 – Security for industrial automation and control systems, Part 2-1: Establishing an Industrial Automation and Control Systems Security Program | GlobalSpec 3: IEC 62443-2-1:2010 | IEC Webstore | cyber security, smart city 4: Structuring the ISA/IEC 62443 Standards – ISAGCA

Q29. What is a feature of an asymmetric key?
Available Choices (select all choices that are correct)

Uses a continuous stream

Uses different keys

Shares the same key OD.

Has lower network overhead

An asymmetric key is a feature of asymmetric cryptography, also known as public-key cryptography, which is a method of encrypting and decrypting data using two different keys: a public key and a private key. The public key can be shared with anyone, while the private key must be kept secret by the owner. The public key and the private key aremathematically related, but it is computationally infeasible to derive one from the other.
Asymmetric cryptography can be used for various purposes, such as digital signatures, key exchange, and encryption. For example, if Alice wants to send a message to Bob, she can use Bob’s public key to encrypt the message, and only Bob can decrypt it using his private key. Alternatively, if Bob wants to prove that he is the author of a message, he can use his private key to sign the message, and anyone can verify it using his public key. Asymmetric cryptography has some advantages over symmetric cryptography, which uses the same key for both encryption and decryption. For instance, asymmetric cryptography does not require a secure channel to distribute the keys, and it can provide non-repudiation and authentication. However, asymmetric cryptography also has some drawbacks, such as higher computational complexity, larger key sizes, and higher network overhead.
References:
* ISA/IEC 62443-3-3:2018, Section 4.2.3.6.1, Cryptography1
* ISA/IEC 62443-4-2:2019, Section 4.2.3.6.1, Cryptography
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 5.3.1, Cryptography
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Exam Specification, Section 5.3.1,
* Cryptography

Q30. Whose responsibility is it to determine the level of risk an organization is willing to tolerate?
Available Choices (select all choices that are correct)

Management

Legal Department

Operations Department

Safety Department

Q31. Which of the following attacks relies on a human weakness to succeed?
Available Choices (select all choices that are correct)

Denial-of-service

Phishing

Escalation-of-privileges

Spoofing

Q32. Which of the following is an industry sector-specific standard?
Available Choices (select all choices that are correct)

ISA-62443 (EC 62443)

NIST SP800-82

API 1164

D. ISO 27001

API 1164 is an industry sector-specific standard that provides guidance on the cybersecurity of pipeline supervisory control and data acquisition (SCADA) systems. API stands for American Petroleum Institute, which is the largest U.S. trade association for the oil and natural gas industry. API 1164 was first published in
2004 and revised in 2009 and 2021. The latest version of the standard aligns with the ISA/IEC 62443 series of standards and incorporates the concepts of security levels, zones, and conduits. API 1164 covers the security lifecycle of pipeline SCADA systems, from risk assessment and policy development to implementation and maintenance. The standard also defines roles and responsibilities, security requirements, security controls, and security assessment methods for pipeline SCADA systems.
References:
* API 1164: Pipeline SCADA Security, Fourth Edition, September 2021
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 2.2.2, Industry Sector-Specific Standards
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Exam Specification, Section 2.2.2, Industry Sector-Specific Standards

Q33. 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)

Asset model

Zone model

Reference model

Reference architecture

The reference model provides the overall conceptual basis in the design of an appropriate security program. It defines the common terminology, concepts, and models that can be used by all stakeholders responsible for IACS security. The reference model describes the general characteristics of IACS, the typical threats and vulnerabilities, the security lifecycle phases, and the security levels. The reference model also introduces the concepts of zones and conduits, which are used to group and isolate assets with similar security requirements and to control the communication between them. Referenceshttps://www.cisco.com/c/en/us/td/docs/solutions/Verticals/IoT_Security_Lab/IEC62443_WP.pd
https://www.cisco.com/c/en/us/td/docs/solutions/Verticals/IoT_Security_Lab/IEC62443_WP.pdf

Q34. Which of the ISA 62443 standards focuses on the process of developing secure products?
Available Choices (select all choices that are correct)

62443-1-1

62443-3-2

62443-3-3

62443-4-1

The ISA/IEC 62443 series of standards is divided into four main parts, each covering a different aspect of industrial automation and control systems (IACS) cybersecurity1:
* Part 1: Terminology, Concepts, and Models
* Part 2: Policies and Procedures
* Part 3: System Requirements
* Part 4: Component Requirements The part 4 of the series focuses on the requirements for the secure development and maintenance of products that are used in IACS, such as controllers, sensors, actuators, network devices, software applications, and cloud services. The part 4 consists of two standards1:

Q35. What is a commonly used protocol for managing secure data transmission over a Virtual Private Network (VPN)?
Available Choices (select all choices that are correct)

HTTPS

IPSec

MPLS

SSH

IPSec is a commonly used protocol for managing secure data transmission over a VPN. IPSec stands for Internet Protocol Security and it is a set of standards that define how to encrypt and authenticate data packets that travel between two or more devices over an IP network. IPSec can operate in two modes: transport mode and tunnel mode. In transport mode, IPSec only encrypts the payload of the IP packet, leaving the header intact. In tunnel mode, IPSec encrypts the entire IP packet and encapsulates it in a new IP header. Tunnel mode is more secure and more suitable for VPNs, as it can protect the original source and destination addresses of the IP packet from eavesdropping or spoofing. IPSec uses two main protocols to provide security services: Authentication Header (AH) and Encapsulating Security Payload (ESP). AH provides data integrity and source authentication, but not confidentiality. ESP provides data integrity, source authentication, and confidentiality. IPSec also uses two protocols to establish and manage security associations (SAs), which are the parameters and keys used for encryption and authentication: Internet Key Exchange (IKE) and Internet Security Association and Key Management Protocol (ISAKMP). IKE is a protocol that negotiates and exchanges cryptographic keys between two devices. ISAKMP is a protocol that defines the format and structure of the messages used for key exchange and SA management.
References:
* ISA/IEC 62443-3-3:2018, Section 4.2.3.7.1, VPN1
* ISA/IEC 62443-4-2:2019, Section 4.2.3.7.1, VPN
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 5.3.2, VPN
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Exam Specification, Section 5.3.2, VPN

Q36. What is defined as the hardware and software components of an IACS?
Available Choices (select all choices that are correct)

COTS software and hardware

Electronic security

Control system

Cybersecuritv

According to the ISA/IEC 62443-1-1 standard, an industrial automation and control system (IACS) is defined as a collection of personnel, hardware, and software that can affect or influence the safe, secure, and reliable operation of an industrial process. The hardware and software components of an IACS include the control system, which is the combination of control devices, networks, and applications that perform the control functions for the industrial process. The control system may consist of various types of devices, such as distributed control systems (DCS), programmable logic controllers (PLC), supervisory control and data acquisition (SCADA) systems, human-machine interfaces (HMI), remote terminal units (RTU), intelligent electronic devices (IED), sensors, actuators, and other field devices. The control system may also use commercial off-the-shelf (COTS) software and hardware, such as operating systems, databases, firewalls, routers, switches, and servers, to support the control functions and communication.
References:
* ISA/IEC 62443-1-1:2009, Security for industrial automation and control systems – Part 1-1:
Terminology, concepts and models, Clause 3.2.11
* ISA/IEC 62443-2-1:2010, Security for industrial automation and control systems – Part 2-1: Establishing an industrial automation and control systems security program, Clause 3.2.12

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