hard
Single Answer
0

Amanda's organization wants to use a decentralized blockchain to store data. Which of the following is true about a decentralized blockchain?

Answer Options

A

No individual or group controls the blockchain.

B

Only cryptocurrency-related data can be stored in a blockchain.

C

Blockchain data can be changed after being stored by the original submitter.

D

Blockchain ledgers are stored on central servers chosen by regular elections among blockchain participants.

Correct Answer: A

Explanation

In a decentralized blockchain, no individual or group controls the blockchain. Blockchains can store many types of data, including but not limited to transactions. Blockchain transactions are permanent once written, and a new transaction or update would need to be recorded rather than revising an existing transaction. Blockchain transactions are stored on the blockchain maintained by participants, not on central servers chosen by election.