[Jan-2025] ISA-IEC-62443 Free PDF from ExamsTorrent [Q54-Q72]

NEW QUESTION 54
Safety management staff are stakeholders of what security program development?
Available Choices (select all choices that are correct)

CSMS

SPRP

CSA

ERM

NEW QUESTION 55
What is the FIRST step required in implementing ISO 27001?
Available Choices (select all choices that are correct)

Create a security management organization.

Define an information security policy.

Implement strict security controls.

Perform a security risk assessment.

NEW QUESTION 56
Which analysis method is MOST frequently used as an input to a security risk assessment?
Available Choices (select all choices that are correct)

Failure Mode and Effects Analysis

Job Safety Analysis(JSA)

Process Hazard Analysis (PHA)

System Safety Analysis(SSA)

NEW QUESTION 57
Which of the following is the BEST example of detection-in-depth best practices?
Available Choices (select all choices that are correct)

Firewalls and unexpected protocols being used

IDS sensors deployed within multiple zones in the production environment

Role-based access control and unusual data transfer patterns

Role-based access control and VPNs

NEW QUESTION 58
Which of the following is the BEST example of detection-in-depth best practices?
Available Choices (select all choices that are correct)

Firewalls and unexpected protocols being used

IDS sensors deployed within multiple zones in the production environment

Role-based access control and unusual data transfer patterns

Role-based access control and VPNs

NEW QUESTION 59
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

NEW QUESTION 60
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

Phishing is a type of cyberattack that relies on a human weakness to succeed. Phishing is the practice of sending fraudulent emails or other messages that appear to come from a legitimate source, such as a bank, a government agency, or a trusted person, in order to trick the recipient into revealing sensitive information, such as passwords, credit card numbers, or personal details, or into clicking on malicious links or attachments that may install malware or ransomware on their devices. Phishing is a common and effective way of compromising the security of industrial automation and control systems (IACS), as it can bypass technical security measures by exploiting the human factor. Phishing can also be used to gain access to the IACS network, to conduct reconnaissance, to launch further attacks, or to cause damage or disruption to the IACS operations. The ISA/IEC 62443 series of standards recognize phishing as a potential threat vector for IACS and provide guidance and best practices on how to prevent, detect, and respond to phishing attacks. Some of the recommended countermeasures include:
* Educating and training the IACS staff on how to recognize and avoid phishing emails and messages, and how to report any suspicious or malicious activity.
* Implementing and enforcing policies and procedures for email and message security, such as using strong passwords, verifying the sender’s identity, and not opening or clicking on unknown or unsolicited links or attachments.
* Applying technical security controls, such as antivirus software, firewalls, spam filters, encryption, and authentication, to protect the IACS devices and network from phishing attacks.
* Monitoring and auditing the IACS network and devices for any signs of phishing attacks, such as
* anomalous or unauthorized traffic, connections, or activities, and taking appropriate actions to contain and mitigate the impact of any incidents. References:
* ISA/IEC 62443-1-1:2009, Security for industrial automation and control systems – Part 1-1:
Terminology, concepts and models1
* ISA/IEC 62443-2-1:2009, Security for industrial automation and control systems – Part 2-1: Establishing an industrial automation and control systems security program2
* ISA/IEC 62443-2-4:2015, Security for industrial automation and control systems – Part 2-4: Security program requirements for IACS service providers3
* ISA/IEC 62443-3-3:2013, Security for industrial automation and control systems – Part 3-3: System security requirements and security levels4
* ISA/IEC 62443-4-2:2019, Security for industrial automation and control systems – Part 4-2: Technical security requirements for IACS components5

NEW QUESTION 61
At Layer 4 of the Open Systems Interconnection (OSI) model, what identifies the application that will handle a packet inside a host?
Available Choices (select all choices that are correct)

ATCP/UDP application ID

A TCP/UDP host ID

ATCP/UDP port number

ATCP/UDP registry number

At layer 4 of the OSI model, also known as the transport layer, the application that will handle a packet inside a host is identified by a TCP/UDP port number. A port number is a 16-bit integer that is assigned to a specific application or service that runs on a host. Port numbers are used to multiplex and demultiplex the data streams that are exchanged between hosts and end systems. Multiplexing is the process of combining multiple data streams into one, while demultiplexing is the process of separating one data stream into multiple ones. Port numbers are part of the header of the transport layer protocol data unit (PDU), which is called a segment for TCP and a datagram for UDP. The header contains the source port number and the destination port number, which indicate the applications that are involved in the communication. For example, if a host sends a packet to another host using the HTTP protocol, which runs on port 80 by default, the source port number would be a random number chosen by the sender, and the destination port number would be 80. The receiver would then use the destination port number to demultiplex the packet and deliver it to the HTTP application.
Port numbers are divided into three ranges: well-known ports (0-1023), registered ports (1024-49151), and dynamic or private ports (49152-65535). Well-known ports are reserved for common and standardized applications and services, such as HTTP (80), FTP (21), and SSH (22). Registered ports are assigned by the Internet Assigned Numbers Authority (IANA) to specific applications and services that request them, such as Skype (49175) and Minecraft (25565). Dynamic or private ports are not assigned by any authority and can be used by any application or service that needs them, such as ephemeral ports that are used for temporary connections.
The other options are not valid identifiers for the application that will handle a packet inside a host at layer 4 of the OSI model. A TCP/UDP application ID is not a term that is used in the OSI model or the TCP/IP model.
A TCP/UDP host ID is not a term that is used in the OSI model or the TCP/IP model, and it would be more appropriate for layer 3, which is the network layer, where the host is identified by an IP address. A TCP/UDP registry number is not a term that is used in the OSI model or the TCP/IP model, and it would be more appropriate for layer 5, which is the session layer, where the registry number is used to identify a session between two hosts.
References:
* Transport Layer | Layer 4 | The OSI-Model1
* OSI model – Wikipedia2
* What is Layer 4 of the OSI Model? | Glossary | A10 Networks3
* What Are the 7 Layers of the OSI Model? | Webopedia4

NEW QUESTION 62
Which steps are part of implementing countermeasures?
Available Choices (select all choices that are correct)

Establish the risk tolerance and select common countermeasures.

Establish the risk tolerance and update the business continuity plan.

Select common countermeasures and update the business continuity plan.

Select common countermeasures and collaborate with stakeholders.

NEW QUESTION 63
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)

Aligned development process

Aligned needs of industrial users

Well-documented security policies and procedures

Defense-in-depth approach to designing

NEW QUESTION 64
In a defense-in-depth strategy, what is the purpose of role-based access control?
Available Choices (select all choices that are correct)

Ensures that users can access systems from remote locations

Ensures that users can access only certain devices on the network

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

Ensures that users correctly manage their username and password

NEW QUESTION 65
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

NEW QUESTION 66
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

NEW QUESTION 67
Which statement is TRUE reqardinq application of patches in an IACS environment?
Available Choices (select all choices that are correct)

Patches should be applied as soon as they are available.

Patches should be applied within one month of availability.

Patches never should be applied in an IACS environment.

Patches should be applied based on the organization’s risk assessment.

NEW QUESTION 68
Which is the PRIMARY responsibility of the network layer of the Open Systems Interconnection (OSI)
model?
Available Choices (select all choices that are correct)

Forwards packets, including routing through intermediate routers

Gives transparent transfer of data between end users

Provides the rules for framing, converting electrical signals to data

Handles the physics of getting a message from one device to another

NEW QUESTION 69
Which of the following is an example of separation of duties as a part of system development and
maintenance?
Available Choices (select all choices that are correct)

Changes are approved by one party and implemented by another.

Configuration settings are made by one party and self-reviewed using a checklist.

Developers write and then test their own code.

Design and implementation are performed by the same team.

NEW QUESTION 70
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

NEW QUESTION 71
Which activity is part of establishing policy, organization, and awareness?
Available Choices (select all choices that are correct)

Communicate policies.

Establish the risk tolerance.

Identify detailed vulnerabilities.

Implement countermeasures.

NEW QUESTION 72
Which is a role of the application layer?
Available Choices (select all choices that are correct)

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

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

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

Delivers and formats information, possibly with encryption and security