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| Section | Objectives |
|---|---|
| Understanding the Current Industrial Security Environment | - Current state of industrial control systems security - Convergence of IT and OT - Security challenges in OT environments |
| Addressing Risk with Selected Security Counter Measures | - Anti-virus and endpoint protection - Patch management - Firewalls and network security devices - Virtual Private Networks (VPNs) |
| Risk Analysis | - Risk management fundamentals - Cybersecurity risk assessment concepts - Risk and vulnerability analysis techniques |
| How Cyberattacks Happen | - Case studies of industrial cyber incidents - Cyber threats and attack vectors - Vulnerabilities in industrial systems |
| Addressing Risk with Implementation Measures | - Access control principles - Industrial network architecture and segmentation - Defense-in-depth strategy - Zones and conduits model |
| Monitoring and Improving the CSMS | - Security lifecycle management - Continuous monitoring of IACS cybersecurity - Incident detection and response |
| Addressing Risk with Security Policy, Organization, and Awareness | - Organizational security roles and responsibilities - Security policies and procedures - Security awareness and training |
| Creating A Security Program | - Defining information security policy - Developing a long-term security program - Security management organization |
| Validating or Verifying the Security of Systems | - Security validation and verification techniques - Continuous improvement of security measures - Auditing and compliance |
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質問 # 38
Which layer in the Open Systems Interconnection (OSI) model would include the use of the File Transfer Protocol (FTP)?
Available Choices (select all choices that are correct)
正解：B
解説：
The File Transfer Protocol (FTP) is an application layer protocol that moves files between local and remote file systems. It runs on top of TCP, like HTTP. To transfer a file, 2 TCP connections are used by FTP in parallel: control connection and data connection. The control connection is used to send commands and responses between the client and the server, while the data connection is used to transfer the actual file. FTP is one of the standard communication protocols defined by the TCP/IP model and it does not fit neatly into the OSI model. However, since the OSI model is a reference model that describes the general functions of each layer, FTP can be considered as an application layer protocol in the OSI model, as it provides user services and interfaces to the network. The application layer is the highest layer in the OSI model and it is responsible for providing various network services to the users, such as email, web browsing, file transfer, remote login, etc. The application layer interacts with the presentation layer, which is responsible for data formatting, encryption, compression, etc. The presentation layer interacts with the session layer, which is responsible for establishing, maintaining, and terminating sessions between applications. The session layer interacts with the transport layer, which is responsible for reliable end-to-end data transfer and flow control. The transport layer interacts with the network layer, which is responsible for routing and addressing packets across different networks. The network layer interacts with the data link layer, which is responsible for framing, error detection, and medium access control. The data link layer interacts with the physical layer, which is responsible for transmitting and receiving bits over the physical medium. References:
* File Transfer Protocol (FTP) in Application Layer1
* FTP Protocol2
* What OSI layer is FTP?3
質問 # 39
In a defense-in-depth strategy, what is the purpose of role-based access control?
Available Choices (select all choices that are correct)
正解：B
質問 # 40
Which is NOT a potential consequence for organizations that fail to prioritize control system security?
正解：A
解説：
Decreased energy consumption is not a consequence of poor control system security. In fact, security breaches often lead to increased (not decreased) energy consumption due to inefficiencies, system downtime, or damage. Real consequences of failing to prioritize control system security include personal injury (due to process hazards), unauthorized data access, theft or misuse, and violation of regulations (with possible legal penalties).
Reference: ISA/IEC 62443-1-1:2007, Section 4.4; ISA/IEC 62443-2-1:2009, Section 4.2.2 (Potential Consequences Table).
質問 # 41
If an industrial control system experiences frequent unexpected shutdowns causing downtime, which SP Element activities should be reviewed to improve system availability?
正解：A
解説：
System availability is a core objective of ISA/IEC 62443, reflected in the Resource Availability (RA) foundational requirement. When frequent shutdowns occur, the standard directs attention to recovery and resilience mechanisms.
Step 1: Role of SP Element 8
SP Element 8 addresses backup, restore, and recovery capabilities. These activities ensure that systems can be restored quickly and reliably following failures, cyber incidents, or operational errors.
Step 2: Availability focus
Unexpected shutdowns often reveal weaknesses in backup integrity, restoration procedures, or recovery testing. ISA/IEC 62443 requires backups to be verified, protected, and periodically tested to ensure operational continuity.
Step 3: Why other SP Elements are secondary
Supply chain security, change control, and logging are important but do not directly restore operations after shutdowns. Backup and recovery directly impact downtime reduction.
Step 4: Operational outcome
Reviewing SP Element 8 activities helps identify gaps in restoration time objectives, backup completeness, and recovery procedures.
Thus, SP Element 8 - Backup restoration is the most relevant.
質問 # 42
Which organization manages the ISASecure conformance certification program?
Available Choices (select all choices that are correct)
正解：A
質問 # 43
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