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Question 462 - CAS-004 discussion

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A common industrial protocol has the following characteristics:

* Provides for no authentication/security

* Is often implemented in a client/server relationship

* Is implemented as either RTU or TCP/IP

Which of the following is being described?

A.
Profinet
Answers
A.
Profinet
B.
Modbus
Answers
B.
Modbus
C.
Zigbee
Answers
C.
Zigbee
D.
Z-Wave
Answers
D.
Z-Wave
Suggested answer: B

Explanation:

The protocol described is Modbus, which is a commonly used industrial protocol that lacks built-in authentication and security features. Modbus operates in a client/server model and can be implemented over RTU (Remote Terminal Unit) or TCP/IP for communication between devices. The other protocols mentioned either have different characteristics or are used in different contexts (such as Profinet for industrial automation, Zigbee for wireless IoT devices, and Z-Wave for home automation). CASP+ identifies Modbus as a critical protocol in industrial environments that lacks security and requires additional protective measures.

CASP+ CAS-004 Exam Objectives: Domain 4.0 -- Industrial Control Systems (ICS) and Modbus Protocol

CompTIA CASP+ Study Guide: Industrial Protocols and Modbus Security

asked 02/10/2024
Bryan Sprowls
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