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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q50-Q55):

NEW QUESTION # 50
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?

A. Design and Implement phases
B. Verification and Validation phase only
C. Operate and Maintain phases exclusively
D. All phases

Answer: D

Explanation:
ISA/IEC 62443 outlines a comprehensive security lifecycle that spans all phases of an automation system's development and deployment - from concept through decommissioning. This includes:
Specification
Design
Implementation
Integration and commissioning
Operation and maintenance
Decommissioning
"The IACS cybersecurity lifecycle includes all phases - from concept through retirement - to ensure security is addressed continuously and consistently."
- ISA/IEC 62443-1-1:2007, Clause 5 - Lifecycle Model
- ISA/IEC 62443-4-1:2018 - Secure Development Lifecycle (SDL)
Security must be integrated early (during design/specification) and maintained throughout the system's life.
References:
ISA/IEC 62443-1-1 - Clause 5
ISA/IEC 62443-2-1 - Lifecycle security program
ISA/IEC 62443-4-1 - SDL phases

NEW QUESTION # 51
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?

A. SL2
B. SL3
C. SL1
D. SL4

Answer: D

Explanation:
SL4 is the highest Security Level defined in ISA/IEC 62443 and is intended to defend against:
Highly motivated attackers
Those with extensive resources
Capable of using sophisticated techniques
"SL4 provides protection against intentional violation using sophisticated means with extended resources, high motivation, and IACS-specific knowledge."
- ISA/IEC 62443-3-3:2013, Table 3 - Security Level Definitions
This level is typically reserved for critical infrastructure or national security environments.
References:
ISA/IEC 62443-3-3:2013 - Table 3
ISA/IEC 62443-1-1 - SL Overview and Definitions

NEW QUESTION # 52
Which protocol is commonly used for managing the security of message transmission on the Internet via web browsers?

A. TLS
B. IPsec
C. PPTP
D. L2TP

Answer: A

Explanation:
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.

NEW QUESTION # 53
What are the four main categories for documents in the ISA-62443 (IEC 62443) series?
Available Choices (select all choices that are correct)

A. General. Policies and Procedures. System, and Component
B. End-User, Integrator, Vendor, and Regulator
C. People. Processes. Technology, and Training
D. Assessment. Mitigation. Documentation, and Maintenance

Answer: A

NEW QUESTION # 54
Which is a commonly used protocol for managing secure data transmission on the Internet?
Available Choices (select all choices that are correct)

A. Secure Telnet
B. Microsoft Point-to-Point Encryption
C. Datagram Transport Layer Security (DTLS)
D. Secure Sockets Layer

Answer: C,D

Explanation:
Datagram Transport Layer Security (DTLS) and Secure Sockets Layer (SSL) are both commonly used protocols for managing secure data transmission on the Internet. DTLS is a variant of SSL that is designed to work over datagram protocols such as UDP, which are used for real-time applications such as voice and video. SSL is a protocol that provides encryption, authentication, and integrity for data transmitted over TCP, which is used for reliable and ordered delivery of data. Both DTLS and SSL use certificates and asymmetric cryptography to establish a secure session between the communicating parties, and then use symmetric cryptography to encrypt the data exchanged. DTLS and SSL are widely used in web browsers, email clients, VPNs, and other applications that require secure communication over the Internet. References:
* ISA/IEC 62443 Standards to Secure Your Industrial Control System, Module 3: Introduction to Cryptography, pages 3-5 to 3-7
* Using the ISA/IEC 62443 Standards to Secure Your Control System, Chapter 6: Securing Communications, pages 125-126

NEW QUESTION # 55
......

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Latest ISA-IEC-62443 Latest Exam Papers–First-Grade Free Sample Questions for ISA-IEC-62443: ISA/IEC 62443 Cybersecurity Fundamentals Specialist

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q50-Q55):

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