What is a block in a blockchain?

What is a block in a blockchain?

  1. a) A blockchain is a centralized digital ledger consisting of records called blocks
  2. b) A blockchain is a decentralized, distributed, digital ledger consisting of records called blocks
  3. c) A blockchain is a single central database run by one administrator, consisting of records called tables
  4. d) None of the above

From the BREB Assistant Programmer 2023 – Written exam, question 6 of 20.

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