ISA ISA-IEC-62443 Exam With Confidence Using Practice Dumps

 MODBUS/TCP is the name of the protocol that implements serial Modbus over Ethernet. MODBUS/TCP is a variant of the Modbus protocol that uses the Transmission Control Protocol (TCP) as the transport layer to encapsulate Modbus messages and send them over Ethernet networks. MODBUS/TCP preserves the Modbus application layer and data model, which means that serial Modbus devices can communicate with MODBUS/TCP devices through a gateway or a converter. MODBUS/TCP is widely used in industrial automation and control systems, as it offers high performance, interoperability, and compatibility with existing Modbus devices. References: ISA/IEC 62443 Cybersecurity Fundamentals Specialist Study Guide, Section 3.1.21; MODBUS Application Protocol Specification V1.1b3, Section 1.1

PROFINET is the implementation of PROFIBUS over Ethernet for non-safety-related communications. It is a standard for industrial Ethernet that enables real-time data exchange between automation devices, controllers, and higher-level systems. PROFINET uses standard Ethernet hardware and software, but adds a thin software layer that allows deterministic and fast communication. PROFINET supports different communication profiles for different applications, such as motion control, process automation, and functional safety. PROFINET is compatible with PROFIBUS, and allows seamless integration of existing PROFIBUS devices and networks123

The NIST Cybersecurity Framework (CSF) was developed to enhance the security and resilience of critical infrastructure in the United States by providing a flexible, repeatable, and cost-effective risk-based approach to managing cybersecurity risk. It is designed to complement, not replace, existing standards and guidelines, and is intended for voluntary adoption by critical infrastructure organizations.