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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q41-Q46):
NEW QUESTION # 41
What.are the two elements of the risk analysis category of an IACS?
Available Choices (select all choices that are correct)
Answer: A
NEW QUESTION # 42
Which ISA/IEC 62443 part covers technical security requirements used by product suppliers, integration service providers, and asset owners?
Answer: C
Explanation:
ISA/IEC 62443-3-3 defines system-level security requirements applicable across roles.
Step 1: System focus
Part 3-3 specifies technical security requirements for IACS systems, independent of who implements them.
Step 2: Multi-role applicability
These requirements are used by:
* Product suppliers (design alignment)
* System integrators (implementation)
* Asset owners (operation and verification)
Step 3: Distinction from other parts
* 2-1 focuses on management systems
* 2-4 focuses on service providers
* 4-2 focuses on component-level requirements
Thus, Option C is correct.
NEW QUESTION # 43
Which is the PRIMARY objective when defining a security zone?
Available Choices (select all choices that are correct)
Answer: B
Explanation:
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
NEW QUESTION # 44
Which protocol is commonly used for managing the security of message transmission on the Internet via web browsers?
Answer: B
Explanation:
Transport Layer Security (TLS) is the primary cryptographic protocol used to secure web-based communications such as HTTPS in web browsers.
From ISA/IEC 62443-3-3 (System Security Requirements and Security Levels), Annex B:
"TLS provides confidentiality, integrity, and authentication for communications over untrusted networks. It is commonly used to secure HTTPS, SMTP, and other application protocols." TLS superseded SSL and is the backbone of secure data transmission over the Internet.
Incorrect Options:
B). L2TP - Used for VPNs; not typically browser-related.
C). PPTP - An older VPN protocol, not used for browser encryption.
D). IPsec - Used to secure IP traffic at the network layer; not directly used in browser-based communication.
References:
ISA/IEC 62443-3-3:2013 - "System Security Requirements and Security Levels" NIST SP 800-52 (supports use of TLS in government systems) ISA/IEC 62443 Study Guide
NEW QUESTION # 45
Which part of the standard provides a list of possible Foundational Requirements to address assessed risks?
Answer: A
Explanation:
ISA/IEC 62443-3-3 provides the list of Foundational Requirements (FRs) for IACS cybersecurity, mapping security controls to each FR to address risks identified during the risk assessment process. The seven FRs include: Identification & Authentication Control (IAC), Use Control (UC), System Integrity (SI), Data Confidentiality (DC), Restricted Data Flow (RDF), Timely Response to Events (TRE), and Resource Availability (RA).
Reference: ISA/IEC 62443-3-3:2013, Section 4.3 and Table 3 ("List of Foundational Requirements").
NEW QUESTION # 46
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