What are three technologies used by a blockchain? (Choose three.)
- security zones
- T-V pairing
- decentralized ledger
- blocks of hexadecimal digits
- digital signature
- algorithm for reaching consensus
Explanation: A blockchain uses digital signatures for authentication, a decentralized ledger to track the transaction process, an algorithm for reaching consensus to verify a transaction, and each block has a hash of the previous block thus forming a blockchain.
Exam with this question: IoT Sec 1.1 Fundamentals: IoT Security Final Exam Answers
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