CompTIA CASP+ (CAS-004) — Question 575

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?

Answer options

• A. Profinet
• B. Modbus
• C. Zigbee
• D. Z-Wave

Correct answer: B

Explanation

The correct answer is Modbus, as it is known for its simplicity and lack of built-in security features. Profinet, Zigbee, and Z-Wave incorporate additional functionalities and security measures that Modbus does not provide.