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ISA/IEC 62443 Cybersecurity Fundamentals Specialist Sample Questions (Q140-Q145):
NEW QUESTION # 140
Which of the following is the underlying protocol for Ethernet/IP?
Available Choices (select all choices that are correct)
- A. Highway Addressable Remote Transducer (HART)
- B. Building Automation and Control Network (BACnet)
- C. Object Linking and Embedding (OLE) for Process Control
- D. Common Industrial Protocol
Answer: D
Explanation:
Ethernet/IP is an industrial network protocol that adapts the Common Industrial Protocol (CIP) to standard Ethernet. CIP is an object-oriented protocol that provides a unified communication architecture for various industrial automation applications, such as control, safety, security, energy, synchronization and motion, information and network management. CIP defines a set of messages and services for interacting with devices and data on the network, as well as a set of device profiles for consistent implementation of automation functions across different products. Ethernet/IP uses the transport and control protocols of standard Ethernet, such as TCP/IP and IEEE 802.3, to define the features and functions for its lower layers. Ethernet/IP also uses UDP to transport I/O messages and supports various network topologies, such as star, linear, ring and wireless. Ethernet/IP is one of the leading industrial protocols in the United States and is widely used in a range of industries, such as factory, hybrid and process. Ethernet/IP is managed by ODVA, Inc., a global trade and standards development organization. References:
* EtherNet/IP - Wikipedia
* EtherNet/IP | ODVA Technologies | Industrial Automation
NEW QUESTION # 141
Which type of cryptographic algorithms requires more than one key?
Available Choices (select all choices that are correct)
- A. Block ciphers
- B. Symmetric (private) key
- C. Asymmetric (public) key
- D. Stream ciphers
Answer: C
NEW QUESTION # 142
Which of the following provides the overall conceptual basis in the design of an appropriate security program?
- A. Asset model
- B. Zone model
- C. Reference model
- D. Reference architecture
Answer: C
Explanation:
The reference model provides the overall conceptual basis for designing an appropriate security program. The ISA/IEC 62443-1-1 standard introduces the reference model to explain the structure, concepts, and relationships within an industrial automation and control system (IACS). It establishes the foundation for applying zones and conduits and for understanding security levels and how assets interact. This model is the cornerstone for implementing other architectural and technical security controls.
Reference: ISA/IEC 62443-1-1:2007, Section 4.2, "Reference Model"; also see Figure 1 in 62443-1-1.
NEW QUESTION # 143
What is OPC?
Available Choices (select all choices that are correct)
- A. An open standard protocol for real-time field bus communication between automation technology
devices
- B. An open standard serial communications protocol widely used in industrial manufacturing environments
- C. A vendor-specific proprietary protocol for the communication of real-time plant data between control devices
- D. An open standard protocol for the communication of real-time data between devices from different
manufacturers
Answer: D
NEW QUESTION # 144
What.are the two elements of the risk analysis category of an IACS?
Available Choices (select all choices that are correct)
- A. Business recovery and risk elimination or mitigation
- B. Business rationale and risk identification and classification
- C. Risk evaluation and risk identification
- D. Business rationale and risk reduction and avoidance
Answer: B
NEW QUESTION # 145
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