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Question 22 - ICS-SCADA Cyber Security discussion

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What type of communication protocol does Modbus RTU use?

A.
UDP
Answers
A.
UDP
B.
ICMP
Answers
B.
ICMP
C.
Serial
Answers
C.
Serial
D.
SSTP
Answers
D.
SSTP
Suggested answer: C

Explanation:

Modbus RTU (Remote Terminal Unit) is a communication protocol based on a master-slave architecture that uses serial communication. It is one of the earliest communication protocols developed for devices connected over serial lines. Modbus RTU packets are transmitted in a binary format over serial lines such as RS-485 or RS-232.

Reference:

Modbus Organization, 'MODBUS over Serial Line Specification and Implementation Guide V1.02'.

asked 18/09/2024
Rickey Dickens
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