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| Section | Weight | Objectives |
|---|---|---|
| Industrial Automation and Control Systems (IACS) Overview | 15% | - Differences between IT and OT security - Cybersecurity importance in industrial environments - IACS components, architectures and protocols |
| Access Control & Identity Management | 15% | - User authentication and authorization - Security policies and procedures - Role-based access control |
| Security Fundamentals & ISA/IEC 62443 Framework | 20% | - Structure and parts of ISA/IEC 62443 standards - Zones and conduits model - Foundational security requirements - Core security principles: CIA triad, defense-in-depth |
| Industrial Network Security | 30% | - Network segmentation and security architecture - Industrial protocols security - Threats, vulnerabilities and risk assessment |
| Security Operations & Incident Response | 20% | - Cybersecurity Management System (CSMS) - Monitoring, maintenance and continuous improvement - Incident handling and response processes |
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NEW QUESTION # 24
What is defined as the hardware and software components of an IACS?
Available Choices (select all choices that are correct)
Answer: D
Explanation:
According to the ISA/IEC 62443-1-1 standard, an industrial automation and control system (IACS) is defined as a collection of personnel, hardware, and software that can affect or influence the safe, secure, and reliable operation of an industrial process. The hardware and software components of an IACS include the control system, which is the combination of control devices, networks, and applications that perform the control functions for the industrial process. The control system may consist of various types of devices, such as distributed control systems (DCS), programmable logic controllers (PLC), supervisory control and data acquisition (SCADA) systems, human-machine interfaces (HMI), remote terminal units (RTU), intelligent electronic devices (IED), sensors, actuators, and other field devices. The control system may also use commercial off-the-shelf (COTS) software and hardware, such as operating systems, databases, firewalls, routers, switches, and servers, to support the control functions and communication.
References:
* ISA/IEC 62443-1-1:2009, Security for industrial automation and control systems - Part 1-1:
Terminology, concepts and models, Clause 3.2.11
* ISA/IEC 62443-2-1:2010, Security for industrial automation and control systems - Part 2-1: Establishing an industrial automation and control systems security program, Clause 3.2.12
NEW QUESTION # 25
Which of the following is an example of a device used for intrusion detection?
Answer: B
Explanation:
A Host-based Intrusion Detection System (IDS) is a device or software application used to monitor and analyze the internals of a computing system (host) for malicious activity or policy violations. Unlike routers, switches, or even firewalls, which focus on network traffic or connectivity, a host-based IDS operates on individual machines to detect unauthorized activity or changes.
Reference: ISA/IEC 62443-3-3:2013, Section 4.2.3.6 ("Intrusion detection and prevention"); Glossary:
"Intrusion Detection System (IDS)."
NEW QUESTION # 26
Which statement is TRUE regarding Intrusion Detection Systems (IDS)?
Available Choices (select all choices that are correct)
Answer: D
NEW QUESTION # 27
Which of the following is a recommended default rule for IACS firewalls?
Available Choices (select all choices that are correct)
Answer: C
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 # 28
A company is developing an automation solution and wants to align its cybersecurity efforts with ISA/IEC
62443 standards. Which lifecycle phases should be integrated into their project plan to cover both security and automation solution security comprehensively?
Answer: B
Explanation:
ISA/IEC 62443 is explicitly lifecycle-based, requiring cybersecurity considerations to be integrated across all phases of an automation solution's lifecycle. This includes concept, design, implementation, verification, operation, maintenance, and decommissioning.
Step 1: Lifecycle philosophy of ISA/IEC 62443
The standard recognizes that cybersecurity risks emerge and evolve throughout the system lifecycle.
Addressing security in only one phase leaves gaps that attackers can exploit.
Step 2: Design and implementation are not sufficient
While secure architecture and configuration are critical, they must be supported by secure development practices, verification, operational procedures, incident response, patching, and change management.
Step 3: Operational importance
Many cybersecurity failures occur during operation due to poor maintenance, weak access control, or unmanaged changes. ISA/IEC 62443-2-1 and 3-3 explicitly address these phases.
Step 4: End-of-life considerations
Decommissioning must also be planned to ensure data, credentials, and access paths are securely removed.
Because the standard spans management (2-x), system (3-x), and component (4-x) requirements across the lifecycle, all phases must be integrated.
NEW QUESTION # 29
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