Blockchain CBBF Certified Blockchain Business Foundations Online Training
Blockchain CBBF Online Training
The questions for CBBF were last updated at Dec 19,2024.
- Exam Code: CBBF
- Exam Name: Certified Blockchain Business Foundations
- Certification Provider: Blockchain
- Latest update: Dec 19,2024
Question #11
Blockchains work best when they are____________________.
- A . combined with other technologies
- B . used for financial applications
- C . used alone
- D . used as an alternative to a database
Question #12
What is a hash function?
- A . A one-way function that converts input to a unique string output
- B . A function that stores data behind a key
- C . A two-way function used for condensing information
- D . The block-ID of the block
- E . All the above
Question #13
Blockchains are being implemented in the food supply chain because_____________.
- A . consumers demand to know where their food comes from
- B . it allows farm to table accountability for safety
- C . they have the potential to provide fast, specific supplier data
- D . it prevents food waste if a food contamination problem occurs
- E . All of the above
Question #14
Which of the following are practical use cases for Blockchain?
- A . Voting
- B . A video sharing website
- C . Medical records
- D . Identity management
- E . All of the above
Question #15
Which item(s) make up a block header?
- A . The hash of the Merkle root and the header of the previous block
- B . The hash of every transaction in a specific block and the next block
- C . The time stamp of the block and the genesis block hash
- D . The hash of the previous block
Question #16
How is Blockchain benefiting voting?
- A . By revealing the identity of each voter and who or what they voted for
- B . By controlling who gets to vote
- C . By only allowing a certain number of votes per person
- D . By allowing voters to trust their vote has been counted
Question #17
Which of the following statements sums up the Proof of Work consensus process?
- A . Miners complete to find a nonce results in a hash that starts with a predetermined number of leading zeros.
- B . 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.
- C . All nodes agree on the data of the transaction.
- D . Miners send assets to an inactive address. This process selects the next owner of a block.
Question #18
The Ethereum Blockchain provides a/an _____________ virtual machine.
- A . Windows compatible
- B . energy efficient
- C . Linux compatible
- D . turing-complete
Question #19
Which Blockchain protocol uses Proof of Work Consensus? Select all that apply
- A . Hyperledger
- B . Corda
- C . Bitcoin
- D . Ethereum
- E . All of the above
Question #20
One of the big issues that new financial transaction Blockchain solutions face is____________.
- A . increasing the number of transactions per second (TPS)
- B . the inability to find use cases
- C . solving user identity
- D . getting banks to cooperate
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