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| Section | Weight | Objectives |
|---|---|---|
| Security Operations & Incident Response | 20% | - Monitoring, maintenance and continuous improvement - Cybersecurity Management System (CSMS) - Incident handling and response processes |
| Industrial Automation and Control Systems (IACS) Overview | 15% | - IACS components, architectures and protocols - Differences between IT and OT security - Cybersecurity importance in industrial environments |
| Access Control & Identity Management | 15% | - Role-based access control - User authentication and authorization - Security policies and procedures |
| Industrial Network Security | 30% | - Network segmentation and security architecture - Industrial protocols security - Threats, vulnerabilities and risk assessment |
| Security Fundamentals & ISA/IEC 62443 Framework | 20% | - Zones and conduits model - Core security principles: CIA triad, defense-in-depth - Structure and parts of ISA/IEC 62443 standards - Foundational security requirements |
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NEW QUESTION # 74
Why is OPC Classic considered firewall unfriendly?
Available Choices (select all choices that are correct)
Answer: D
Explanation:
OPC Classic uses DCOM, which dynamically assigns any port between 1024 and 65535. Comprehensive Explanation: OPC Classic is a software interface technology that uses the Distributed Component Object Model (DCOM) protocol to facilitate the transfer of data between different industrial control systems. DCOM is a Microsoft technology that allows applications to communicate across a network. However, DCOM is not designed with security in mind, and it poses several challenges for firewall configuration. One of the main challenges is that DCOM does not use fixed TCP port numbers, but rather negotiates new port numbers within the first open connection. This means that intermediary firewalls can only be used with wide-open rules, leaving a large range of ports open for potential attacks. This makes OPC Classic very "firewall unfriendly" and reduces the security and protection they provide. References:
* Tofino Security OPC Foundation White Paper
* Step 2 (for client or server): Configuring firewall settings - GE
* Secure firewall for OPC Classic - Design World
NEW QUESTION # 75
Which is the BEST deployment system for malicious code protection?
Available Choices (select all choices that are correct)
Answer: A
NEW QUESTION # 76
Which NIST Special Publication focuses specifically on securing Industrial Control Systems (ICS)?
Answer: A
Explanation:
ISA/IEC 62443 recognizes that organizations may align their IACS cybersecurity programs with other authoritative guidance. Within the NIST Special Publications, SP 800-82 is the document specifically dedicated to Industrial Control Systems security.
Step 1: Scope of SP 800-82
SP 800-82 provides guidance tailored to ICS environments, including SCADA, DCS, and PLC-based systems. It addresses availability, safety, and real-time constraints similar to ISA/IEC 62443.
Step 2: Complementary relationship
ISA/IEC 62443 and SP 800-82 are often used together: ISA/IEC 62443 provides auditable requirements, while SP 800-82 provides practical implementation guidance.
Step 3: Why other options are incorrect
* SP 800-30 focuses on risk assessment
* SP 800-53 defines general security controls
* SP 800-171 focuses on protecting CUI in non-federal systems
Therefore, the correct answer is SP 800-82.
NEW QUESTION # 77
How many maturity levels (ML) are established for evaluation criteria according to ISA/IEC 62443-2-4?
Answer: A
Explanation:
According to ISA/IEC 62443-2-4, which defines security requirements for IACS service providers, four maturity levels (ML1-ML4) are established as evaluation criteria for measuring the maturity of cybersecurity practices.
These are:
ML1 - Initial
ML2 - Managed
ML3 - Defined
ML4 - Improving
"This standard defines four maturity levels (ML1 through ML4) to assess the extent of cybersecurity process implementation for service providers."
- ISA/IEC 62443-2-4:2015, Clause 5.1 - Maturity Level Overview
These maturity levels are used to benchmark and certify service provider practices across different domains like patching, access control, and incident response.
References:
ISA/IEC 62443-2-4:2015 - Clause 5.1
ISA/IEC 62443-1-1 - Definitions of maturity models
NEW QUESTION # 78
Authorization (user accounts) must be granted based on which of the following?
Available Choices (select all choices that are correct)
Answer: C
NEW QUESTION # 79
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