Free PDF ISA - ISA-IEC-62443 - ISA/IEC 62443 Cybersecurity Fundamentals Specialist Authoritative Study Materials Review

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ISA ISA-IEC-62443 Exam Syllabus Topics:

SectionObjectives
Topic 1: Risk and Security Management- Risk assessment principles
- Security lifecycle management in industrial systems
Topic 2: Industrial Network and System Security- Asset identification and protection
- Network segmentation and architecture security
Topic 3: Policies, Procedures, and Governance- Compliance and governance considerations
- Security policies for industrial control systems
Topic 4: Introduction to Industrial Cybersecurity- Overview of IT vs OT security concepts
- Fundamentals of cybersecurity in industrial environments
Topic 5: ISA/IEC 62443 Framework Overview- Structure and purpose of IEC 62443 standards
- Key terminology and concepts (zones, conduits, security levels)

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q148-Q153):

NEW QUESTION # 148
What is one reason why IACS systems are highly vulnerable to attack?

Answer: D

Explanation:
ISA/IEC 62443 highlights that many IACS environments operate with long lifecycles and strict availability requirements, which often results in delayed or infrequent patching.
Step 1: Legacy systems and uptime constraints
IACS components may run for decades without replacement. Applying patches can introduce operational and safety risks, so updates are often postponed.
Step 2: Accumulated vulnerabilities
Unpatched systems accumulate known vulnerabilities that attackers can exploit using publicly available tools.
Step 3: Why other options are incorrect
IACS systems are no longer isolated. They do require patches, and they rarely run the latest updates.
Therefore, unpatched software is a major vulnerability factor.


NEW QUESTION # 149
Which of the following is a recommended default rule for IACS firewalls?
Available Choices (select all choices that are correct)

Answer: D

Explanation:
A recommended default rule for IACS firewalls is to block all traffic by default, and then allow only the necessary and authorized traffic based on the security policy and the zone and conduit model. This is also known as the principle of least privilege, which means granting the minimum access required for a legitimate purpose. Blocking all traffic by default provides a higher level of security and reduces the attack surface of the IACS network. The other choices are not recommended default rules for IACS firewalls, as they may expose the IACS network to unnecessary risks. Allowing all traffic by default would defeat the purpose of a firewall, as it would not filter any malicious or unwanted traffic. Allowing IACS devices to access the Internet would expose them to potential cyber threats, such as malware, phishing, or denial-of-service attacks.
Allowing traffic directly from the IACS network to the enterprise network would bypass the demilitarized zone (DMZ), which is a buffer zone that isolates the IACS network from the enterprise network and hosts services that need to communicate between them. References:
ISA/IEC 62443 Standards to Secure Your Industrial Control System training course1 ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide2 Using the ISA/IEC 62443 Standard to Secure Your Control Systems3


NEW QUESTION # 150
Which of the following is the BEST reason for periodic audits?
Available Choices (select all choices that are correct)

Answer: D


NEW QUESTION # 151
What is the FIRST step required in implementing ISO 27001?
Available Choices (select all choices that are correct)

Answer: B


NEW QUESTION # 152
What is defined as the hardware and software components of an IACS?
Available Choices (select all choices that are correct)

Answer: C


NEW QUESTION # 153
......

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