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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q132-Q137):

NEW QUESTION # 132
How many security levels are in the ISASecure certification program?
Available Choices (select all choices that are correct)

A. 0
B. 1
C. 2
D. 3

Answer: D

NEW QUESTION # 133
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)

A. Application layer
B. Data link layer
C. Session layer
D. Transport layer

Answer: A

Explanation:
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

NEW QUESTION # 134
How many security levels are in the ISASecure certification program?
Available Choices (select all choices that are correct)

A. 0
B. 1
C. 2
D. 3

Answer: D

Explanation:
The ISASecure certification program, aligned with the ISA/IEC 62443 standards, defines three distinct security levels that categorize the robustness of industrial control systems against known cybersecurity threats. These levels are designed to provide a scalable approach to securing industrial automation and control systems, with each level offering a higher degree of security. The levels are typically identified as SL1 (Security Level 1), SL2 (Security Level 2), and SL3 (Security Level 3), each addressing increasingly stringent security capabilities and resilience against cyber attacks.

NEW QUESTION # 135
What is the purpose of ISO/IEC 15408 (Common Criteria)?
Available Choices (select all choices that are correct)

A. To define a security management organization
B. To describe what constitutes a secure product
C. To define a product development evaluation methodology
D. To describe a process for risk management

Answer: C

Explanation:
ISO/IEC 15408, also known as the Common Criteria for Information Technology Security Evaluation, is an international standard that provides a framework for evaluating the security of IT products and systems. The purpose of the standard is to define a common set of requirements for the security functions and assurance measures of IT products and systems, and to establish a common methodology for conducting security evaluations. The standard allows users to specify their security needs and expectations in a Security Target (ST), which may be based on one or more Protection Profiles (PPs)that define security requirements for a class of products or systems. Vendors can then implement or claim compliance with the ST or PPs, and have their products or systems evaluated by independent testing laboratories against the security criteria defined in the standard. The standard also defines a scale of Evaluation Assurance Levels (EALs) that indicate the degree of confidence in the security of the evaluated product or system. The standard is intended to facilitate the development, procurement, and use of secure IT products and systems, and to promote the recognition and acceptance of evaluation results across different countries and regions. References:
* ISO/IEC 15408-1:2009 - Common Criteria Evaluation for IT Security - Nemko1
* Common Criteria - Wikipedia2
* ISO/IEC Standard 15408 - ENISA3

NEW QUESTION # 136
What is a key activity in the Maintain phase?

A. Managing changes
B. Risk assessment
C. Designing cybersecurity countermeasures
D. Allocating assets to security zones

Answer: A

Explanation:
The "Maintain" phase is the fourth phase of the IACS Cybersecurity Lifecycle described in ISA/IEC 62443-2-
1. A key activity in this phase is managing changes (also known as "change management"). This activity ensures that any modifications to the IACS environment (hardware, software, processes, etc.) are evaluated for cybersecurity impact, and proper controls are implemented to maintain the intended security posture.
While risk assessment is typically done in the Assess phase, and allocating assets and designing countermeasures belong to earlier phases, managing changes is essential for ensuring ongoing compliance and effectiveness of cybersecurity controls over time.
Reference: ISA/IEC 62443-2-1:2009, Section 5.6 (Maintain Phase), Table 3 (CSMS lifecycle activities).

NEW QUESTION # 137
......

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Quiz 2025 ISA Unparalleled ISA-IEC-62443 Latest Test Dumps

Real ISA ISA-IEC-62443 Dumps | ISA-IEC-62443 Valid Exam Discount

ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q132-Q137):

ISA-IEC-62443 Latest Test Dumps & Valid Real ISA-IEC-62443 Dumps Bring you the Best Products for ISA/IEC 62443 Cybersecurity Fundamentals Specialist

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