Jun 09, 2024 Detailed New ISA-IEC-62443 Exam Questions for Concept Clearance [Q11-Q26]

Jun 09, 2024 Detailed New ISA-IEC-62443 Exam Questions for Concept Clearance

ISA-IEC-62443 Exam Preparation Material with New ISA-IEC-62443 Dumps Questions.

NEW QUESTION # 11
What are the four main categories for documents in the ISA-62443 (IEC 62443) series?
Available Choices (select all choices that are correct)

A. People. Processes. Technology, and Training
B. End-User, Integrator, Vendor, and Regulator
C. Assessment. Mitigation. Documentation, and Maintenance
D. General. Policies and Procedures. System, and Component

Answer: D

NEW QUESTION # 12
Why is patch management more difficult for IACS than for business systems?
Available Choices (select all choices that are correct)

A. Overtime pay is required for technicians.
B. Many more approvals are required.
C. Patching a live automation system can create safety risks.
D. Business systems automatically update.

Answer: C

NEW QUESTION # 13
Which is the BEST practice when establishing security zones?
Available Choices (select all choices that are correct)

A. Security zones should align with physical network segments.
B. Assets within the same logical communication network should be in the same security zone.
C. All components in a large or complex system should be in the same security zone.
D. Security zones should contain assets that share common security requirements.

Answer: D

Explanation:
Security zones are logical groupings of assets that share common security requirements based on factors such as criticality, consequence, vulnerability, and threat. Security zones are used to apply the principle of defense in depth, which means creating multiple layers of protection to prevent or mitigate cyberattacks. By creating security zones, asset owners can isolate the most critical or sensitive assets from the less critical or sensitive ones, and apply different levels of security controls to each zone according to the risk assessment. Security zones are not necessarily aligned with physical network segments, as assets within the same network may have different security requirements. For example, a network segment may contain both a safety instrumented system (SIS) and a human-machine interface (HMI), but the SIS has a higher security requirement than the HMI. Therefore, the SIS and the HMI should be in different security zones, even if they are in the same network segment. Similarly, assets within the same logical communication network may not have the same security requirements, and therefore should not be in the same security zone. For example, a logical communication network may span across multiple physical locations, such as a plant and a corporate office, but the assets in the plant may have higher security requirements than the assets in the office. Therefore, the assets in the plant and the office should be in different security zones, even if they are in the same logical communication network. Finally, all components in a large or complex system should not be in the same security zone, as this would create a single point of failure and expose the entire system to potential cyberattacks. Instead, the components should be divided into smaller and simpler security zones, based on their security requirements, and the communication between the zones should be controlled by conduits.
Conduits are logical or physical connections between security zones that allow data flow and access control.
Conduits should be designed to minimize the attack surface and the potential impact of cyberattacks, by applying security controls such as firewalls, encryption, authentication, and authorization. References:
* How to Define Zones and Conduits1
* Securing industrial networks: What is ISA/IEC 62443?2
* ISA/IEC 62443 Series of Standards3

NEW QUESTION # 14
Which of the following is an activity that should trigger a review of the CSMS?
Available Choices (select all choices that are correct)

A. Organizational restructuring
B. New technical controls
C. Budgeting
D. Security incident exposing previously unknown risk.

Answer: D

NEW QUESTION # 15
Multiuser accounts and shared passwords inherently carry which of the followinq risks?
Available Choices (select all choices that are correct)

A. Privilege escalation
B. Unauthorized access
C. Buffer overflow
D. Race conditions

Answer: A

NEW QUESTION # 16
Which service does an Intrusion Detection System (IDS) provide?
Available Choices (select all choices that are correct)

A. It is effective against all vulnerabilities in networks and computer systems.
B. It is the lock on the door for networks and computer systems.
C. It blocks malicious activity in networks and computer systems.
D. It detects attempts to break into or misuse a computer system.

Answer: D

NEW QUESTION # 17
What is the name of the missing layer in the Open Systems Interconnection (OSI) model shown below?

A. Transport
B. Control
C. Protocol
D. User

Answer: A

NEW QUESTION # 18
Which is a role of the application layer?
Available Choices (select all choices that are correct)

A. Delivers and formats information, possibly with encryption and security
B. Includes user applications specific to network applications such as email, file transfer, and reading data
registers in a PLC
C. Includes protocols specific to network applications such as email, file transfer, and reading data registers
in a PLC
D. Provides the mechanism for opening, closing, and managing a session between end-user application
processes

Answer: B

NEW QUESTION # 19
What do packet filter firewalls examine?
Available Choices (select all choices that are correct)

A. Only the source, destination, and ports in the header of each packet
B. Every incoming packet up to the application layer
C. The packet structure and sequence
D. The relationships between packets in a session

Answer: A

Explanation:
Packet filter firewalls, as defined by ISA/IEC 62443 standards on cybersecurity, primarily examine the source, destination, and ports in the header of each packet. This type of firewall does not inspect the packet content deeply (such as its structure or sequence) or maintain awareness of the relationships between packets in a session. Instead, it operates at a more superficial level, filtering packets based solely on IP addresses and TCP/UDP ports. This approach allows packet filter firewalls to quickly process and either accept or block packets based on these predefined criteria without delving into the complexities of session management or the content of the packets up to the application layer.

NEW QUESTION # 20
Which of the following is the BEST reason for periodic audits?
Available Choices (select all choices that are correct)

A. To meet regulations
B. To adhere to a published or approved schedule
C. To confirm audit procedures
D. To validate that security policies and procedures are performing

Answer: D

Explanation:
Periodic audits are an essential part of the ISA/IEC 62443 cybersecurity standards, as they help to verify the effectiveness and compliance of the security program. According to the ISA/IEC 62443-2-1 standard, periodic audits should be conducted to evaluate the following aspects1:
* The security policies and procedures are consistent with the security requirements and objectives of the organization
* The security policies and procedures are implemented and enforced in accordance with the security program
* The security policies and procedures are reviewed and updated regularly to reflect changes in the threat landscape, the IACS environment, and the business needs
* The security performance indicators and metrics are measured and reported to the relevant stakeholders
* The security incidents and vulnerabilities are identified, analyzed, and resolved in a timely manner
* The security awareness and training programs are effective and aligned with the security roles and responsibilities of the personnel
* The security audits and assessments are conducted by qualified and independent auditors
* The security audit and assessment results are documented and communicated to the appropriate parties
* The security audit and assessment findings and recommendations are addressed and implemented in a prioritized and systematic way Periodic audits are not only a means to meet regulations or adhere to a schedule, but also a way to validate that the security policies and procedures are performing as intended and achieving the desired security outcomes. Periodic audits also help to identify gaps and weaknesses in the security program and provide opportunities for improvement and enhancement. References: Periodic audits are an essential part of the ISA/IEC 62443 cybersecurity
* standards, as they help to verify the effectiveness and compliance of the security program. According to the ISA/IEC 62443-2-1 standard, periodic audits should be conducted to evaluate the following aspects1:
* The security policies and procedures are consistent with the security requirements and objectives of the organization
* The security policies and procedures are implemented and enforced in accordance with the security program
* The security policies and procedures are reviewed and updated regularly to reflect changes in the threat landscape, the IACS environment, and the business needs
* The security performance indicators and metrics are measured and reported to the relevant stakeholders
* The security incidents and vulnerabilities are identified, analyzed, and resolved in a timely manner
* The security awareness and training programs are effective and aligned with the security roles and responsibilities of the personnel
* The security audits and assessments are conducted by qualified and independent auditors
* The security audit and assessment results are documented and communicated to the appropriate parties
* The security audit and assessment findings and recommendations are addressed and implemented in a prioritized and systematic way Periodic audits are not only a means to meet regulations or adhere to a schedule, but also a way to validate that the security policies and procedures are performing as intended and achieving the desired security outcomes. Periodic audits also help to identify gaps and weaknesses in the security program and provide opportunities for improvement and enhancement. References:

NEW QUESTION # 21
Which is the BEST practice when establishing security zones?
Available Choices (select all choices that are correct)

A. Security zones should align with physical network segments.
B. Assets within the same logical communication network should be in the same security zone.
C. All components in a large or complex system should be in the same security zone.
D. Security zones should contain assets that share common security requirements.

Answer: D

NEW QUESTION # 22
Which statement is TRUE regarding Intrusion Detection Systems (IDS)?
Available Choices (select all choices that are correct)

A. They require a small amount of care and feeding
B. They are effective against known vulnerabilities.
C. They are very inexpensive to design and deploy.
D. Modern IDS recognize IACS devices by default.

Answer: D

NEW QUESTION # 23
Using the risk matrix below, what is the risk of a medium likelihood event with high consequence?

A. Option A
B. Option B
C. Option D
D. Option C

Answer: B

NEW QUESTION # 24
Who must be included in a training and security awareness program?
Available Choices (select all choices that are correct)

A. All personnel
B. Vendors and suppliers
C. Employees
D. Temporary staff

Answer: A

NEW QUESTION # 25
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)