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ISA-IEC-62443 Certification & Exam ISA-IEC-62443 Pass4sure

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q187-Q192):

NEW QUESTION # 187
How many element qroups are in the "Addressinq Risk" CSMS cateqorv?
Available Choices (select all choices that are correct)

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

Answer: B

Explanation:
The "Addressing Risk" CSMS category consists of three element groups: Security Policy, Organization and Awareness; Selected Security Countermeasures; and Implementation of Security Program1. These element groups cover the aspects of defining the security objectives, roles and responsibilities, policies and procedures, awareness and training, security countermeasures selection and implementation, and security program execution and maintenance1. The "Addressing Risk" CSMS category aims to reduce the security risk to an acceptable level by applying appropriate security measures to the system under consideration (SuC)
1. References: 1: ISA/IEC 62443-2-1: Security for industrial automation and control systems: Establishing an industrial automation and control systems security program

NEW QUESTION # 188
What is a feature of an asymmetric key?
Available Choices (select all choices that are correct)

A. Shares the same key OD.
B. Has lower network overhead
C. Uses different keys
D. Uses a continuous stream

Answer: C

Explanation:
An asymmetric key is a feature of asymmetric cryptography, also known as public-key cryptography, which is a method of encrypting and decrypting data using two different keys: a public key and a private key. The public key can be shared with anyone, while the private key must be kept secret by the owner. The public key and the private key aremathematically related, but it is computationally infeasible to derive one from the other.
Asymmetric cryptography can be used for various purposes, such as digital signatures, key exchange, and encryption. For example, if Alice wants to send a message to Bob, she can use Bob's public key to encrypt the message, and only Bob can decrypt it using his private key. Alternatively, if Bob wants to prove that he is the author of a message, he can use his private key to sign the message, and anyone can verify it using his public key. Asymmetric cryptography has some advantages over symmetric cryptography, which uses the same key for both encryption and decryption. For instance, asymmetric cryptography does not require a secure channel to distribute the keys, and it can provide non-repudiation and authentication. However, asymmetric cryptography also has some drawbacks, such as higher computational complexity, larger key sizes, and higher network overhead.
References:
* ISA/IEC 62443-3-3:2018, Section 4.2.3.6.1, Cryptography1
* ISA/IEC 62443-4-2:2019, Section 4.2.3.6.1, Cryptography
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 5.3.1, Cryptography
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Exam Specification, Section 5.3.1,
* Cryptography

NEW QUESTION # 189
Which of the following is NOT listed as a potential consequence of compromising IACS according to the ISA99 Committee scope?

A. Loss of proprietary information
B. Endangerment of public safety
C. Economic and operational losses
D. Increased product sales

Answer: D

Explanation:
The ISA99 Committee (which develops the ISA/IEC 62443 series) clearly outlines four key consequences of compromising an Industrial Automation and Control System (IACS):
Endangerment of public or employee safety
Loss of public confidence
Violation of regulatory requirements
Loss of proprietary or confidential information
Economic and operational losses
"Increased product sales" is not listed - in fact, a compromise would likely result in the opposite, such as brand damage and loss of customer trust.
"The scope of the ISA99 Committee includes addressing risks such as the endangerment of public safety, loss of information, and economic harm arising from cyber incidents affecting IACS."
- ISA/IEC 62443-1-1:2007, Clause 1 - Scope and Purpose
References:
ISA/IEC 62443-1-1:2007 - Clause 1
ISA99 Committee Charter and Scope

NEW QUESTION # 190
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, portable media, and hard drives
B. LAN, WAN, and hard drive
C. LAN, portable media, and wireless
D. LAN, power source, and wireless OD.

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 # 191
What port number is used by MODBUS TCP/IP for communication?

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

Answer: C

Explanation:
MODBUS TCP/IP, a widely used communication protocol in industrial control systems, uses TCP port 502 by default.
"Modbus TCP/IP operates on TCP port 502, and this port should be monitored and protected to prevent unauthorized commands to critical control systems."
- ISA/IEC 62443-3-3:2013, Annex A - Communication Protocols
This makes port 502 a high-value target for attackers, which is why it must be secured via firewalls and access control.
References:
ISA/IEC 62443-3-3:2013 - Annex A
MODBUS Application Protocol Specification v1.1b

NEW QUESTION # 192
......

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