Exam ISA-IEC-62443 Quiz - Exam ISA-IEC-62443 Introduction

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q99-Q104):

NEW QUESTION # 99
Which of the following are the critical variables related to access control?
Available Choices (select all choices that are correct)

A. Account management and password strength
B. Password strength and change frequency
C. Reporting and monitoring
D. Account management and monitoring

Answer: A

NEW QUESTION # 100
Which of the following is the underlying protocol for Ethernet/IP?
Available Choices (select all choices that are correct)

A. Building Automation and Control Network (BACnet)
B. Object Linking and Embedding (OLE) for Process Control
C. Highway Addressable Remote Transducer (HART)
D. Common Industrial Protocol

Answer: D

NEW QUESTION # 101
Which is the PRIMARY reason why Modbus over Ethernet is easy to manaqe in a firewall?
Available Choices (select all choices that are correct)

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

Answer: C

NEW QUESTION # 102
Which is a PRIMARY reason why network security is important in IACS environments?
Available Choices (select all choices that are correct)

A. PLCs are programmed using ladder logic.
B. PLCs use serial or Ethernet communications methods.
C. PLCs under cyber attack can have costly and dangerous impacts.
D. PLCs are inherently unreliable.

Answer: C

Explanation:
Network security is important in IACS environments because PLCs, or programmable logic controllers, are devices that control physical processes and equipment in industrial settings. PLCs under cyber attack can have costly and dangerous impacts, such as disrupting production, damaging equipment, compromising safety, and harming the environment. Therefore, network security is essential to protect PLCs and other IACS components from unauthorized access, modification, or disruption. The other choices are not primary reasons why network security is important in IACS environments. PLCs are not inherently unreliable, but they can be affected by environmental factors, such as temperature, humidity, and electromagnetic interference. PLCs are programmed using ladder logic, which is a graphical programming language that resembles electrical schematics. PLCs use serial or Ethernet communications methods, depending on the type and age of the device, to communicate with other IACS components, such as human-machine interfaces (HMIs), supervisory control and data acquisition (SCADA) systems, and distributed control systems (DCSs). References:
* ISA/IEC 62443 Standards to Secure Your Industrial Control System training course1
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide2
* Using the ISA/IEC 62443 Standard to Secure Your Control Systems3

NEW QUESTION # 103
Which of the following can be employed as a barrier device in a segmented network?
Available Choices (select all choices that are correct)

A. VPN
B. Unmanaged switch
C. Domain controller
D. Router

Answer: D

NEW QUESTION # 104
......

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Exam ISA-IEC-62443 Quiz - Exam ISA-IEC-62443 Introduction

ISA ISA-IEC-62443 Dumps PDF Format: Convenient And relevant

ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q99-Q104):

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