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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q28-Q33):
NEW QUESTION # 28
Which activity is part of establishing policy, organization, and awareness?
Available Choices (select all choices that are correct)
- A. Implement countermeasures.
- B. Communicate policies.
- C. Identify detailed vulnerabilities.
- D. Establish the risk tolerance.
Answer: B
NEW QUESTION # 29
Which protocol is commonly used for managing the security of message transmission on the Internet via web browsers?
- A. IPsec
- B. L2TP
- C. PPTP
- D. TLS
Answer: D
Explanation:
Transport Layer Security (TLS) is the standard protocol for securing web communications, including HTTP over TLS (HTTPS) in web browsers. TLS provides encryption, authentication, and data integrity, and has replaced SSL as the primary means of securing browser-based communications.
Reference: ISA/IEC 62443-3-3:2013, Section 4.2.3.7 ("Use of TLS for secure communication"); NIST SP
800-52 Rev. 2.
NEW QUESTION # 30
What are the two sublayers of Layer 2?
Available Choices (select all choices that are correct)
- A. OPC and DCOM
- B. HIDS and NIDS
- C. LLC and MAC
- D. VLAN and VPN
Answer: C
NEW QUESTION # 31
How can Modbus be secured?
- A. By firewall
- B. By encrypting all data packets
- C. By using a VPN
- D. By limiting user access
Answer: A
Explanation:
Modbus, in its traditional form, lacks inherent security features. According to ISA/IEC 62443, one of the most practical ways to secure Modbus traffic is by placing it behind a firewall, which restricts access to only trusted sources and destinations. While VPNs and user access controls can add security, firewalls provide critical segmentation, which is explicitly recommended for legacy and insecure protocols like Modbus.
Reference: ISA/IEC 62443-3-3:2013, Section 4.2.3.4 ("Use of firewalls for insecure protocols"); ISA/IEC
62443-1-1:2007, Section 3.2.1.
NEW QUESTION # 32
Which statement is TRUE regarding Intrusion Detection Systems (IDS)?
Available Choices (select all choices that are correct)
- A. They are effective against known vulnerabilities.
- B. They are very inexpensive to design and deploy.
- C. Modern IDS recognize IACS devices by default.
- D. They require a small amount of care and feeding
Answer: C
NEW QUESTION # 33
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