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QUESTION: 33

Which is the PRIMARY reason why Modbus over Ethernet is easy to manage in a firewall?

Modbus uses a single master to communicate with multiple slaves using simple commands.
Modbus is a proprietary protocol that is widely supported by vendors.
Modbus uses explicit source and destination IP addresses and a single known TCP port.
Modbus has no known security vulnerabilities, so firewall rules are simple to implement.

Answer(s): C

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QUESTION: 34

Which of the following is the BEST example of detection-in-depth best practices?

Firewalls and unexpected protocols being used
IDS sensors deployed within multiple zones in the production environment
Role-based access control and unusual data transfer patterns
Role-based access control and VPNs

Answer(s): B

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QUESTION: 35

What are the four main categories for documents in the ISA-62443 (IEC 62443) series?

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

Answer(s): A

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QUESTION: 36

What are the three main components of the ISASecure Integrated Threat Analysis (ITA) Program?

Software development security assurance, functional security assessment, and communications robustness testing
Software robustness security testing, functional software assessment assurance, and essential security functionality assessment
Communications robustness testing, functional security assurance, and software robustness communications
Communication speed, disaster recovery, and essential security functionality assessment

Answer(s): A

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QUESTION: 37

Which of the following can be employed as a barrier device in a segmented network?

Router
Unmanaged switch
VPN
Domain controller

Answer(s): A

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QUESTION: 38

What is the purpose of ISO/IEC 15408 (Common Criteria)?

To define a security management organization
To describe a process for risk management
To define a product development evaluation methodology
To describe what constitutes a secure product

Answer(s): C

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QUESTION: 39

What does Layer 1 of the ISO/OSI protocol stack provide?

Data encryption, routing, and end-to-end connectivity
Framing, converting electrical signals to data, and error checking
The electrical and physical specifications of the data connection
User applications specific to network applications such as reading data registers in a PLC

Answer(s): C

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QUESTION: 40

At Layer 4 of the Open Systems Interconnection (OSI) model, what identifies the application that will handle a packet inside a host?

A TCP/UDP application ID
A TCP/UDP host ID
A TCP/UDP port number
A TCP/UDP registry number

Answer(s): C

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ISA Cybersecurity Fundamentals Specialist Cybersecurity Fundamentals Specialist Dumps in PDF

Free ISA Cybersecurity Fundamentals Specialist Real Questions (page: 10)

QUESTION: 33

QUESTION: 34

QUESTION: 35

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QUESTION: 37

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QUESTION: 39

QUESTION: 40