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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q161-Q166):

NEW QUESTION # 161
Which of the following starts at a high level and includes all ANSI/ISA-95 Level 0,1,2,3,4 equipment and information systems?

A. Zone model
B. Asset model
C. Reference architecture
D. Reference model

Answer: D

Explanation:
The reference model described in ISA/IEC 62443-1-1 (see Figure 2) starts at a high level and encompasses all levels of the ISA-95 model (Levels 0 to 4), which range from field devices up to business logistics systems.
This model provides a holistic, layered view of all the equipment, systems, and information flows in industrial automation.
Reference: ISA/IEC 62443-1-1:2007, Section 4.2 ("Reference Model"); Figure 2 (Relationship to ANSI/ISA-
95 Levels).

NEW QUESTION # 162
What do packet filter firewalls examine?
Available Choices (select all choices that are correct)

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

Answer: B

NEW QUESTION # 163
What is the name of the missing layer in the Open Systems Interconnection (OSI) model shown below?

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

Answer: C

Explanation:
The OSI model defines 7 layers for standardizing communications in network systems. The Transport Layer is responsible for reliable data transfer between end systems, including flow control, error correction, and segmentation. It sits between the Network Layer and the Session Layer.
The correct OSI model from top to bottom is:
Application
Presentation
Session
Transport # Missing layer
Network
Data Link
Physical
"The transport layer provides transparent transfer of data between end users, ensuring complete data transfer."
- ISA/IEC 62443-3-3:2013, Annex A - Communications Stack and Layered Security Concepts Understanding the OSI model is crucial when designing secure industrial networks, as ISA/IEC 62443 advocates for layered defense ("defense in depth") at all levels.
References:
ISA/IEC 62443-3-3:2013 - Annex A
ISA/IEC 62443-1-1:2007 - Section on OSI Reference Model

NEW QUESTION # 164
Which organization manages the ISASecure conformance certification program?
Available Choices (select all choices that are correct)

A. National Institute of Standards and Technology
B. American Society for Industrial Security
C. Security Compliance Institute
D. Automation Federation

Answer: C

Explanation:
The ISASecure conformance certification program is managed by the Security Compliance Institute (ISCI), a non-profit organization established in 2007 by a group of industry stakeholders, including end users, suppliers, and integrators. ISCI's mission is to provide a common industry-accepted set of device and process requirements that drive device security, simplifying procurement for asset owners and device assurance for equipment vendors12. References: 1: ISASecure - IEC 62443 Conformance Certification - Official Site 2:
Certifications - ISASecure

NEW QUESTION # 165
What are the four documents that belong to the General category of the ISA-62443 (IEC 62443) series?

A. Part 1-1: Terminology, concepts, and models; Part 1-2: Master glossary of terms and definitions; Part 1-
3: Security technologies for IACS; and Part 1-4: IACS security lifecycle and use cases
B. Part 1-1: Terminology, concepts, and models; Part 1-2: Master glossary of terms and definitions; Part 1-
3: System security conformance metrics; and Part 1-4: IACS security lifecycle and use cases
C. Part 1-1: Terminology, concepts, and models; Part 1-2: Master glossary of terms and definitions; Part 1-
3: System security conformance metrics; and Part 1-4: Security program requirements for IACS service providers
D. Part 1-1: Terminology, concepts, and models; Part 1-2: Master glossary of terms and definitions; Part 1-
3: Security program ratings; and Part 1-4: IACS security lifecycle and use cases

Answer: B

Explanation:
The four documents classified under the General category of ISA/IEC 62443 are:
* Part 1-1: Terminology, concepts, and models
* Part 1-2: Master glossary of terms and definitions
* Part 1-3: System security conformance metrics
Reference: ISA/IEC 62443-1-1:2007, Section 4.1.2 ("Document structure and categorization"); 62443 standards overview chart.

NEW QUESTION # 166
......

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