What is a characteristic of a blockchain?
- It uses risk avoidance.
- It is a government approved authentication protocol.
- It is immutable.
- It uses the XML format.
Explanation: A blockchain is immutable, which means it is unable to be changed. This is important because blockchain technology is used to secure and track transactions.
Exam with this question: IoT Security 1.1 Chapter 6 Quiz Answers
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