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| Section | Objectives |
|---|---|
| Addressing Risk with Selected Security Counter Measures | - Patch management - Anti-virus and endpoint protection - Virtual Private Networks (VPNs) - Firewalls and network security devices |
| Validating or Verifying the Security of Systems | - Security validation and verification techniques - Continuous improvement of security measures - Auditing and compliance |
| Creating A Security Program | - Developing a long-term security program - Security management organization - Defining information security policy |
| Monitoring and Improving the CSMS | - Security lifecycle management - Continuous monitoring of IACS cybersecurity - Incident detection and response |
| Addressing Risk with Implementation Measures | - Zones and conduits model - Defense-in-depth strategy - Industrial network architecture and segmentation - Access control principles |
| Understanding the Current Industrial Security Environment | - Current state of industrial control systems security - Security challenges in OT environments - Convergence of IT and OT |
| How Cyberattacks Happen | - Cyber threats and attack vectors - Case studies of industrial cyber incidents - Vulnerabilities in industrial systems |
| Addressing Risk with Security Policy, Organization, and Awareness | - Security awareness and training - Security policies and procedures - Organizational security roles and responsibilities |
| Risk Analysis | - Risk management fundamentals - Risk and vulnerability analysis techniques - Cybersecurity risk assessment concepts |
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NEW QUESTION # 93
Which is the PRIMARY reason why Modbus over Ethernet is easy to manaqe in a firewall?
Available Choices (select all choices that are correct)
Answer: B
NEW QUESTION # 94
Which service does an Intrusion Detection System (IDS) provide?
Available Choices (select all choices that are correct)
Answer: B
NEW QUESTION # 95
What is a feature of an asymmetric key?
Available Choices (select all choices that are correct)
Answer: C
Explanation:
An asymmetric key is a feature of asymmetric cryptography, also known as public-key cryptography, which is a method of encrypting and decrypting data using two different keys: a public key and a private key. The public key can be shared with anyone, while the private key must be kept secret by the owner. The public key and the private key aremathematically related, but it is computationally infeasible to derive one from the other.
Asymmetric cryptography can be used for various purposes, such as digital signatures, key exchange, and encryption. For example, if Alice wants to send a message to Bob, she can use Bob's public key to encrypt the message, and only Bob can decrypt it using his private key. Alternatively, if Bob wants to prove that he is the author of a message, he can use his private key to sign the message, and anyone can verify it using his public key. Asymmetric cryptography has some advantages over symmetric cryptography, which uses the same key for both encryption and decryption. For instance, asymmetric cryptography does not require a secure channel to distribute the keys, and it can provide non-repudiation and authentication. However, asymmetric cryptography also has some drawbacks, such as higher computational complexity, larger key sizes, and higher network overhead.
References:
* ISA/IEC 62443-3-3:2018, Section 4.2.3.6.1, Cryptography1
* ISA/IEC 62443-4-2:2019, Section 4.2.3.6.1, Cryptography
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 5.3.1, Cryptography
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Exam Specification, Section 5.3.1,
* Cryptography
NEW QUESTION # 96
Which of the following activities is NOT listed under the "Patch Testing" phase in the asset owner requirements?
Answer: B
Explanation:
According to ISA/IEC 62443-2-3, patch testing involves several tasks to ensure the patch is safe and effective before deployment. These include:
File authenticity verification
Notification of applicable systems/users
Qualification and verification testing
However, a "removal procedure" is not listed as a standard activity under patch testing - although rollback planning might be a best practice, it is not specifically listed in the test phase.
"Patch testing activities include verification of patch authenticity, notification to relevant stakeholders, and qualification testing in a representative environment."
- ISA/IEC 62443-2-3:2015, Clause 6.1.2 - Patch Testing and Validation
References:
ISA/IEC 62443-2-3:2015 - Clause 6.1.2
ISA/IEC 62443-2-1 - Operational patch planning
NEW QUESTION # 97
Which Security Level (SL) would be MOST appropriate for a system that requires protection against attackers with high motivation and extended resources using sophisticated means?
Answer: B
Explanation:
ISA/IEC 62443 defines Security Levels (SL 0-4) based on attacker capability, motivation, and resources.
Step 1: Understanding SL 4
SL 4 is defined as protection against intentional violations using sophisticated means with extended resources.
This includes highly motivated attackers, potentially well-funded and highly skilled.
Step 2: Why SL 4 applies
The question explicitly mentions:
* High motivation
* Extended resources
* Sophisticated means
This description exactly matches the formal definition of SL 4 in ISA/IEC 62443-3-3 and 4-2.
Step 3: Why lower SLs are insufficient
SL 1-3 do not assume extended resources or the highest attacker sophistication.
Thus, SL 4 is the correct target.
NEW QUESTION # 98
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