Online Access Free BLOCKCHAINF Exam Questions

Blockchain work best when they are _____________ .

• A.Used as an alternative to a database
• B.Used for financial applications
• C.Used alone
• D.Combined with other technologies

Why is Hyperledger a good business solution over other Blockchains?

• A.Modular design allowing for flexibility in solution
• B.All the above
• C.Multiple consensus methods can be chosen for use
• D.It can employ smart contracts
• E.Always permissioned and private

Who governs a Blockchain?

• A.The architects
• B.The users
• C.The creator of the Blockchain
• D.The developers

Which of the following statements sums up the Proof of Work consensus process?

• A.Miners put up a stake. A miner is then selected based on stake value to add a new block to the chain. If a miner adds an invalid block to the chain, that miner loses their stake.
• B.Miners complete to find a nonce results in a hash that starts with a predetermined number of leading zeros.
• C.Miners send assets to an inactive address. This process selects the next owner of a block.
• D.All nodes agree on the data of the transaction.

How does the Bitcoin provide anonymity?

• A.Through Merkle trees
• B.None of the above
• C.By publishing only the block address
• D.Through consensus algorithms such as Proof of Work
• E.Through public/private key cryptography