Exin BLOCKCHAINF EXIN Blockchain Foundation Exam Exam Practice Test Questions

• Question 1

  A Blockchain provides .

  • True information by all parties involved
  • A trusted transaction between untrusted parties
  • The easiest way to conduct international transactions
  • Only trusted banks for conducting transactions

  Show Answer Answer: A Next

• Question 2

  What is a Blockchain?

  • A digital currency
  • An unchangeable record
  • A database of usable secret data
  • A Smart Contract
  • All of the above

  Show Answer Answer: B Next

• Question 3

  Who can read records on a public Blockchain?

  • Everyone on the Blockchain
  • No one
  • Only the creator
  • The users with access permissions
  • None of the above

  Show Answer Answer: A Next

• Question 4

  If a node on the network were to lose a copy of the ledger, the ledger is not lost. The large number of other nodes have a copy and won’t lose track. This is known as .

  • Censorship
  • Immutability
  • Transparency
  • Redundancy

  Show Answer Answer: B Next

• Question 5

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

  • Miners complete to find a nonce results in a hash that starts with a predetermined number of leading zeros.
  • 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.
  • All nodes agree on the data of the transaction.
  • Miners send assets to an inactive address. This process selects the next owner of a block.

  Show Answer Answer: C Next