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| Section | Objectives |
|---|---|
| Topic 1: Industrial Network and System Security | - Asset identification and protection - Network segmentation and architecture security |
| Topic 2: Policies, Procedures, and Governance | - Compliance and governance considerations - Security policies for industrial control systems |
| Topic 3: ISA/IEC 62443 Framework Overview | - Key terminology and concepts (zones, conduits, security levels) - Structure and purpose of IEC 62443 standards |
| Topic 4: Risk and Security Management | - Security lifecycle management in industrial systems - Risk assessment principles |
| Topic 5: Introduction to Industrial Cybersecurity | - Fundamentals of cybersecurity in industrial environments - Overview of IT vs OT security concepts |
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50. Frage
Which of the following is a recommended default rule for IACS firewalls?
Available Choices (select all choices that are correct)
Antwort: D
51. Frage
Which protocol is commonly used for managing the security of message transmission on the Internet via web browsers?
Antwort: C
Begründung:
Transport Layer Security (TLS) is the standard protocol for securing web communications, including HTTP over TLS (HTTPS) in web browsers. TLS provides encryption, authentication, and data integrity, and has replaced SSL as the primary means of securing browser-based communications.
Reference: ISA/IEC 62443-3-3:2013, Section 4.2.3.7 ("Use of TLS for secure communication"); NIST SP
800-52 Rev. 2.
52. Frage
What change was introduced in the second edition (2024) of ISA-62443-2-1 compared to the first edition (2010)?
Antwort: D
Begründung:
The second edition (2024) of ISA/IEC 62443-2-1 introduced a significant structural improvement by eliminating duplication of Information Security Management System (ISMS) requirements. The first edition (2010) contained content that overlapped substantially with ISO/IEC 27001-style ISMS controls, leading to redundancy and unnecessary implementation burden.
In the updated edition, ISA clarified that 62443-2-1 is not intended to replace a general-purpose ISMS, but rather to extend and specialize it for Industrial Automation and Control Systems (IACS). As a result, duplicated ISMS clauses were removed or streamlined, and the focus shifted to IACS-specific risks, operational realities, and lifecycle concerns.
This change improves:
* Compatibility with existing enterprise ISMS implementations
* Clarity of roles between IT security governance and OT security management
* Practical adoption by asset owners operating both IT and OT environments Importantly, supply chain security, lifecycle management, and organizational governance were not removed.
Instead, they were better aligned and referenced to avoid redundancy. The PDCA model remains implicit but was not newly introduced in 2024.
Thus, the defining change is the elimination of duplicated ISMS requirements, making Option B correct.
53. Frage
Which is a physical layer standard for serial communications between two or more devices?
Available Choices (select all choices that are correct)
Antwort: C
Begründung:
RS232 is a physical layer standard for serial communication between two or more devices. It defines the electrical characteristics, timing, and pinout of connectors for serial data transmission. RS232 is widely used in industrial communication devices, such as PLCs, measuring instruments, and network servers. RS232 allows only one master and one slave to communicate on each line, and operates in a full duplex mode. RS232 haslower transmission speed, shorter maximum cable length, and larger voltage swing than later standards such as RS422 and RS485123 References: 1: Basics of RS232, RS422, and RS485 Serial Communication 2: RS-232 - Wikipedia 3: RS232 Serial Communication Protocol: Basics, Working & Specifications
54. Frage
What are the four main categories for documents in the ISA-62443 (IEC 62443) series?
Available Choices (select all choices that are correct)
Antwort: C
55. Frage
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