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ISA-IEC-62443 New Study Questions - Sample ISA-IEC-62443 Test Online

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q91-Q96):

NEW QUESTION # 91
Which of the following is an example of separation of duties as a part of system development and
maintenance?
Available Choices (select all choices that are correct)

A. Developers write and then test their own code.
B. Configuration settings are made by one party and self-reviewed using a checklist.
C. Changes are approved by one party and implemented by another.
D. Design and implementation are performed by the same team.

Answer: C

NEW QUESTION # 92
Which of the following tools has the potential for serious disruption of a control network and should not be used on a live system?
Available Choices (select all choices that are correct)

A. Vulnerability scanner
B. Web browser
C. Remote desktop
D. FTP

Answer: A

Explanation:
A vulnerability scanner is a tool that scans a network or a system for known vulnerabilities, such as misconfigurations, outdated software, or weak passwords. A vulnerability scanner can provide valuable information for improving the security posture of a system, but it can also cause serious disruption of a control network if used on a live system. This is because a vulnerability scanner may generate a large amount of network traffic, consume system resources, trigger alarms, or even crash devices by exploiting vulnerabilities.
Therefore, a vulnerability scanner should not be used on a live system without proper authorization and precautions. A vulnerability scanner should only be used on a test or isolated network, or during a scheduled maintenance window with minimal impact on the system operation. References: ISA/IEC 62443 Standards to Secure Your Industrial Control System, Module 5: Assessing the Current Security Level, Slide 25.

NEW QUESTION # 93
Which of the following is NOT a general class of firewalls?

A. Packet filter
B. Stateful inspection
C. Network monitor
D. Application proxy

Answer: C

Explanation:
Packet filter, application proxy, and stateful inspection are all recognized types or classes of firewalls in both IT and industrial control environments. A network monitor, on the other hand, is not considered a firewall but rather a tool for observing and analyzing network traffic. It does not provide firewall-like controls for blocking or allowing traffic.
Reference: ISA/IEC 62443-3-3:2013, Section 4.2.3.3 ("Types of firewalls"); ISA/IEC 62443-1-1:2007, Section 3.2.6.

NEW QUESTION # 94
Which is a role of the application layer?
Available Choices (select all choices that are correct)

A. Includes user applications specific to network applications such as email, file transfer, and reading data
registers in a PLC
B. Delivers and formats information, possibly with encryption and security
C. Includes protocols specific to network applications such as email, file transfer, and reading data registers
in a PLC
D. Provides the mechanism for opening, closing, and managing a session between end-user application
processes

Answer: A

NEW QUESTION # 95
Which standard is applied during the Assess phase for risk assessment?

A. ISA/IEC 62443-3-3
B. ISA/IEC 62443-3-1
C. ISA/IEC 62443-2-1
D. ISA/IEC 62443-3-2

Answer: D

Explanation:
ISA/IEC 62443-3-2 specifically describes the methodology for conducting risk assessments within industrial automation and control systems (IACS). This part of the standard provides guidance on identifying risks, assigning Security Levels, and making design decisions during the Assess phase of the IACS Cybersecurity Lifecycle.
Reference: ISA/IEC 62443-3-2:2020, Section 4 ("Cybersecurity risk assessment for system design").

NEW QUESTION # 96
......

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