ISA-IEC-62443 TEST VCE, DUMPS ISA-IEC-62443 COST

ISA-IEC-62443 Test Vce, Dumps ISA-IEC-62443 Cost

ISA-IEC-62443 Test Vce, Dumps ISA-IEC-62443 Cost

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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q89-Q94):

NEW QUESTION # 89
Which characteristic is MOST closely associated with the deployment of a demilitarized zone (DMZ)?
Available Choices (select all choices that are correct)

  • A. Level 4 systems must use the DMZ to communicate with Level 3 and below.
  • B. Level 0 can only interact with Level 1 through the firewall.
  • C. Internet access through the firewall is allowed.
  • D. Email is prevented, thereby mitigating the risk of phishing attempts.

Answer: C

Explanation:
In cybersecurity, a demilitarized zone (DMZ) refers to a physical or logical subnetwork that contains and exposes an organization's external-facing services to an untrusted network, typically the internet. The main characteristic of a DMZ is that it acts as a buffer zone between the public internet and the private network.
This allows for internet access through the firewall while keeping the internal network secure. Internet-facing servers are placed in the DMZ so that they are separated from the rest of the internal network. By doing so, if a server in the DMZ is compromised, the attacker would not have direct access to the internal network. This architecture is commonly used to host services such as web servers, mail servers, and FTP servers. Choice C is the most closely associated with the deployment of a DMZ as it allows for regulated and monitored internet access through a firewall.


NEW QUESTION # 90
Multiuser accounts and shared passwords inherently carry which of the followinq risks?
Available Choices (select all choices that are correct)

  • A. Race conditions
  • B. Privilege escalation
  • C. Unauthorized access
  • D. Buffer overflow

Answer: B,C

Explanation:
Multiuser accounts and shared passwords are accounts and passwords that are used by more than one person to access a system or a resource. They inherently carry the risk of unauthorized access, which means that someone who is not authorized or intended to use the account or password can gain access to the system or resource, and potentially compromise its confidentiality, integrity, or availability. For example, if a multiuser account and password are shared among several operators of an industrial automation and control system (IACS), an attacker who obtains the password can use the account to access the IACS and perform malicious actions, such as changing the system settings, deleting data, or disrupting the process. Multiuser accounts and shared passwords also make it difficult to track and audit the activities of individual users, and to enforce the principle of least privilege, which states that users should only have the minimum level of access required to perform their tasks. Therefore, the ISA/IEC 62443 standards recommend avoiding the use of multiuser accounts and shared passwords, and instead using individual accounts and strong passwords for each user, and implementing authentication and authorization mechanisms to control the access to the IACS. References:
* ISA/IEC 62443-3-3:2013 - Security for industrial automation and control systems - Part 3-3: System security requirements and security levels1
* ISA/IEC 62443-2-1:2009 - Security for industrial automation and control systems - Part 2-1:
Establishing an industrial automation and control systems security program2
* ISA/IEC 62443 Cybersecurity Fundamentals Specialist Training Course3
Shared passwords and multiuser accounts pose specific risks, notably unauthorized access and privilege escalation. In ISA/IEC 62443's framework, these practices are discouraged because they complicate the attribution of actions to individual users and increase the likelihood that accounts can be used beyond their intended scope. Unauthorized access occurs when individuals exploit the shared nature of an account to gain entry to systems or data that they should not access. Privilege escalation can happen when users leverage shared accounts to perform actions at higher permission levels than those assigned to their personal accounts.
Conversely, buffer overflows and race conditions are types of vulnerabilities or programming errors, not directly associated with the risks of multiuser accounts or shared passwords.


NEW QUESTION # 91
Which of the following provides the overall conceptual basis in the design of an appropriate security program?
Available Choices (select all choices that are correct)

  • A. Reference model
  • B. Asset model
  • C. Reference architecture
  • D. Zone model

Answer: A


NEW QUESTION # 92
Which of the following is an element of security policy, organization, and awareness?
Available Choices (select all choices that are correct)

  • A. Technical requirement assessment
  • B. Staff training and security awareness
  • C. Product development requirements
  • D. Penetration testing

Answer: A


NEW QUESTION # 93
Which of the following is the BEST reason for periodic audits?
Available Choices (select all choices that are correct)

  • A. To adhere to a published or approved schedule
  • B. To validate that security policies and procedures are performing
  • C. To confirm audit procedures
  • D. To meet regulations

Answer: B


NEW QUESTION # 94
......

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