Online Access Free CBBF Exam Questions

One of Blockchain's primary uses of cryptography is___________.

• A.allowing users to communicate with each other anonymously
• B.providing a public and private encryption key
• C.keeping the I.P. addresses a secret
• D.keeping the network configuration a secret

What do consensus methods achieve?

• A.The highest level of security in a database by ensuring 51% agreement of nodes on the network.
• B.It confirms that all nodes on the network are legitimate.
• C.Anonymity in a peer to peer network
• D.The most efficient way of recording a transaction in any database.
• E.None of the above

What is a hash function?

• A.A function that stores data behind a key
• B.A one-way function that converts input to a unique string output
• C.All the above
• D.The block-ID of the block
• E.A two-way function used for condensing information

How would a developer make a change to Blockchain protocol?

• A.There is no way to change Blockchain protocol
• B.There are no restrictions, a developer could just change the code
• C.A developer would need to initiate a hard fork
• D.None of the above
• E.change the orderer configuration

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

• A.It is less expensive to develop
• B.It requires less mining power than a public Blockchain
• C.It requires fewer administrators to manage it
• D.To limit user access and permissions