Which blockchain feature is used to track the transaction process?
- decentralized ledger
- T-V pairing
- digital signature
- algorithm for reaching consensus
Explanation: A blockchain uses four main technologies and features:
- Digital signatures for authentication
- A decentralized ledger to track the transaction process
- An algorithm for reaching consensus so it is easy for others to verify a transaction
- A hash of the previous block thus forming a blockchain
Related exam: IoT Security 1.1 Chapter 6 Quiz Answers
