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Free Blockchain CBBF Exam Questions (page: 12)

Page 4 of 22
PDF with 84 Questions

Why is a private Blockchain used instead of a public one?

  1. To limit user access and permissions
  2. It is less expensive to develop
  3. It requires less mining power than a public Blockchain
  4. It requires fewer administrators to manage it

Answer(s): A


Reference:

https://medium.com/coinmonks/public-vs-private-blockchain-in-a-nutshell-c9fe284fa39f



A distributed network is always decentralized.

  1. True
  2. False

Answer(s): B


Reference:

https://stackoverflow.com/questions/49195562/difference-between-a-distributed-and-a-decentralized-network



Blockchains work best when they are _____________.

  1. combined with other technologies
  2. used for financial applications
  3. used alone
  4. used as an alternative to a database

Answer(s): B



What is a hash function?

  1. A one-way function that converts input to a unique string output
  2. A function that stores data behind a key
  3. A two-way function used for condensing information
  4. The block-ID of the block
  5. All the above

Answer(s): D



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