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[General] Test ISA-IEC-62443 Questions Answers & ISA-IEC-62443 Reliable Braindumps Que

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【General】 Test ISA-IEC-62443 Questions Answers & ISA-IEC-62443 Reliable Braindumps Que

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q189-Q194):NEW QUESTION # 189
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)
  • A. MPLS
  • B. SSH
  • C. HTTPS
  • D. IPSec
Answer: D
Explanation:
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

NEW QUESTION # 190
What should the identification analysis of discovered vulnerabilities determine?
  • A. User interface improvements
  • B. The cost of patch development
  • C. Root cause analysis
  • D. Marketing strategy for the product
Answer: C
Explanation:
ISA/IEC 62443 requires that vulnerability management go beyond detection and focus on understanding why vulnerabilities exist. Identification analysis is a critical step in this process.
Step 1: Purpose of identification analysis
The standard requires asset owners and suppliers to analyze discovered vulnerabilities to determine their origin and contributing factors. This ensures corrective actions address systemic issues, not just symptoms.
Step 2: Root cause focus
Root cause analysis identifies whether vulnerabilities result from configuration errors, insecure design, missing controls, or process failures. This aligns with the standard's emphasis on prevention and continuous improvement.
Step 3: Why other options are incorrect
User interface improvements and marketing strategies are unrelated to cybersecurity risk reduction. Cost considerations may follow remediation planning but are not the purpose of identification analysis.
Step 4: Lifecycle relevance
By identifying root causes, organizations can prevent recurrence and strengthen controls across the IACS lifecycle.
Thus, the correct answer is Root cause analysis.

NEW QUESTION # 191
A company discovers malware on a portable USB device used within their IACS environment. According to the document, which SP Element and controls would be MOST relevant to address this issue?
  • A. SP Element 7 - Incident handling and response
  • B. SP Element 2 - Asset inventory baseline
  • C. SP Element 1 - Processes for discovery of security anomalies
  • D. SP Element 4 - Component hardening and dedicated portable media
Answer: D
Explanation:
According to ISA/IEC 62443-2-1, SP Element 4 is focused on system integrity and includes controls such as component hardening and managing dedicated portable media (e.g., USB drives). These controls help mitigate malware risks from removable devices.
"SP Element 4: System integrity. This element includes controls for system hardening and the use of dedicated, protected portable media to reduce infection risk and prevent unauthorized software installation."
- ISA/IEC 62443-2-1:2010, Clause 4.3.4 - SP Elements
While SP Element 7 (Incident Handling) may be involved post-discovery, the primary preventive control is under SP Element 4.
References:
ISA/IEC 62443-2-1:2010 - Clause 4.3.4, Table 2 - SP Element 4
ISA/IEC 62443-2-4 - Security controls for service providers managing portable devices

NEW QUESTION # 192
When selecting a risk assessment methodology for a complex industrial automation system, which approach aligns BEST with ISA/IEC 62443 guidance?
  • A. Follow any documented methodology as long as it uses a consistent risk ranking scale.
  • B. Avoid using standards or frameworks to maintain flexibility.
  • C. Use different methodologies for initial and detailed assessments to cover more perspectives.
  • D. Only perform qualitative assessments without quantitative measures.
Answer: A
Explanation:
ISA/IEC 62443-3-2 intentionally avoids mandating a single risk assessment methodology. Instead, it defines requirements for the outcome and consistency of the risk assessment process.
Step 1: Methodology flexibility
The standard allows asset owners to use qualitative, quantitative, or hybrid methods based on system complexity, organizational maturity, and available data.
Step 2: Consistency requirement
What ISA/IEC 62443 does require is that the methodology be documented, repeatable, and consistent, particularly in how risks are ranked and compared.
Step 3: Security Level determination
Consistent risk ranking is essential for determining Target Security Levels (SL-T) and for justifying security decisions during audits.
Step 4: Why other options are incorrect
Avoiding standards undermines rigor. Using only qualitative methods may be insufficient. Mixing methodologies can introduce inconsistency and invalidate comparisons.
Therefore, the approach that best aligns with ISA/IEC 62443 is to follow any documented methodology that uses a consistent risk ranking scale.

NEW QUESTION # 193
Which of the following provides the overall conceptual basis in the design of an appropriate security program?
  • A. Reference model
  • B. Zone model
  • C. Reference architecture
  • D. Asset model
Answer: A
Explanation:
The reference model provides the overall conceptual basis for designing an appropriate security program. The ISA/IEC 62443-1-1 standard introduces the reference model to explain the structure, concepts, and relationships within an industrial automation and control system (IACS). It establishes the foundation for applying zones and conduits and for understanding security levels and how assets interact. This model is the cornerstone for implementing other architectural and technical security controls.
Reference: ISA/IEC 62443-1-1:2007, Section 4.2, "Reference Model"; also see Figure 1 in 62443-1-1.

NEW QUESTION # 194
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