A.A vendor-specific proprietary protocol for the communication of real-time plant data between control devices

B.An open standard protocol for the communication of real-time data between devices from different
manufacturers

C.An open standard protocol for real-time field bus communication between automation technology
devices

D.An open standard serial communications protocol widely used in industrial manufacturing environments

A.Includes user applications specific to network applications such as email, file transfer, and reading data
registers in a PLC

B.Includes protocols specific to network applications such as email, file transfer, and reading data registers
in a PLC

C.Delivers and formats information, possibly with encryption and security

D.Provides the mechanism for opening, closing, and managing a session between end-user application
processes

A.Perform a security risk assessment.

B.Implement strict security controls.

C.Create a security management organization.

D.Define an information security policy.

A.Session layer

B.Presentation layer

C.Application layer

D.Data link layer

A.All components in a large or complex system should be in the same security zone.

B.Security zones should contain assets that share common security requirements.

C.Security zones should align with physical network segments.

D.Assets within the same logical communication network should be in the same security zone.