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CompTIA Exam PT0-003 Topic 3 Question 11 Discussion
Topic #: 3
Which of the following OT protocols sends information in cleartext?
Security: It includes mechanisms for reliable and deterministic data transfer, not typically sending information in cleartext.
DNP3 (Option B):
Security: While the original DNP3 protocol transmits data in cleartext, the DNP3 Secure Authentication extensions provide cryptographic security features.
Modbus (Answer: C):
Security: Modbus transmits data in cleartext, which makes it susceptible to interception and unauthorized access.
Security: PROFINET includes several security features, including support for encryption, which means it doesn't necessarily send information in cleartext.
Conclusion: Modbus is the protocol that most commonly sends information in cleartext, making it vulnerable to eavesdropping and interception.
PROFINET (Option D):
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