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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q46-Q51):

NEW QUESTION # 46
What.are the two elements of the risk analysis category of an IACS?
Available Choices (select all choices that are correct)

A. Business rationale and risk identification and classification
B. Business rationale and risk reduction and avoidance
C. Business recovery and risk elimination or mitigation
D. Risk evaluation and risk identification

Answer: A

Explanation:
The risk analysis category of an IACS consists of two elements: business rationale and risk identification and classification1. Business rationale is the process of defining the scope, objectives, and criteria for the risk analysis, as well as the roles and responsibilities of the stakeholders involved. Risk identification and classification is the process of identifying the assets, threats, vulnerabilities, and consequences of a cyberattack on the IACS, and assigning a risk level to each scenario based on the likelihood and impact of the attack1. These elements are essential for establishing a baseline of the current risk posture of the IACS and determining the appropriate risk treatment measures to reduce the risk to an acceptable level. References: 1:
ISA/IEC 62443-3-2:2020, Security for industrial automation and control systems - Part 3-2: Security risk assessment for system design, International Society of Automation, Research Triangle Park, NC, USA, 2020.

NEW QUESTION # 47
Which is the BEST practice when establishing security zones?
Available Choices (select all choices that are correct)

A. Assets within the same logical communication network should be in the same security zone.
B. Security zones should contain assets that share common security requirements.
C. All components in a large or complex system should be in the same security zone.
D. Security zones should align with physical network segments.

Answer: B

NEW QUESTION # 48
What are three possible entry points (pathways) that could be used for launching a cyber attack?
Available Choices (select all choices that are correct)

A. LAN, power source, and wireless OD.
B. LAN, WAN, and hard drive
C. LAN, portable media, and wireless
D. LAN, portable media, and hard drives

Answer: C

Explanation:
A cyber attack is an attempt to compromise the confidentiality, integrity, or availability of a computer system or network by exploiting its vulnerabilities. A cyber attack can be launched from various entry points, which are the pathways that allow an attacker to access a target system or network. According to the ISA/IEC
62443-3-2 standard, which defines a method for conducting a security risk assessment for industrial automation and control systems (IACS), some of the possible entry points for a cyber attack are:
* LAN: A local area network (LAN) is a network that connects devices within a limited geographic area, such as a building or a campus. A LAN can be an entry point for a cyber attack if an attacker gains physical or logical access to the network devices, such as switches, routers, firewalls, or servers. An attacker can use various techniques to access a LAN, such as network scanning, spoofing, sniffing, or hijacking. An attacker can also exploit vulnerabilities in the network protocols, services, or applications that run on the LAN. A cyber attack on a LAN can affect the communication and operation of the devices and systems connected to the network, such as IACS.
* Portable media: Portable media are removable storage devices that can be used to transfer data between different systems or devices, such as USB flash drives, CDs, DVDs, or external hard drives. Portable media can be an entry point for a cyber attack if an attacker uses them to introduce malicious code or data into a target system or device. An attacker can use various techniques to infect portable media, such as autorun, social engineering, or physical tampering. An attacker can also exploit vulnerabilities in the operating systems, drivers, or applications that interact with portable media. A cyber attack using portable media can affect the functionality and security of the systems or devices that use them, such as IACS.
* Wireless: Wireless is a technology that enables communication and data transmission without physical wires or cables, such as Wi-Fi, Bluetooth, or cellular networks. Wireless can be an entry point for a cyber attack if an attacker intercepts, modifies, or disrupts the wireless signals or data. An attacker can use various techniques to access wireless networks or devices, such as cracking, jamming, or eavesdropping. An attacker can also exploit vulnerabilities in the wireless protocols, standards, or encryption methods. A cyber attack on wireless can affect the availability and reliability of the wireless communication and data transmission, such as IACS.
Therefore, LAN, portable media, and wireless are three possible entry points that could be used for launching a cyber attack. References:
* Cybersecurity Risk Assessment According to ISA/IEC 62443-3-21
* ISA/IEC 62443 Series of Standards2

NEW QUESTION # 49
Which of the following is an element of monitoring and improving a CSMS?
Available Choices (select all choices that are correct)

A. Increase in staff training and security awareness
B. Significant changes in identified risk round in periodic reassessments
C. Restricted access to the industrial control system to an as-needed basis
D. Review of system logs and other key data files

Answer: D

NEW QUESTION # 50
In a defense-in-depth strategy, what is the purpose of role-based access control?
Available Choices (select all choices that are correct)

A. Ensures that users can access only certain devices on the network
B. Ensures that users can access systems from remote locations
C. Ensures that users can access only the functions they need for their job
D. Ensures that users correctly manage their username and password

Answer: C

NEW QUESTION # 51
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