CBBF Online Practice Questions and Answers

A distributed network is always decentralized.

A. True

B. False

A Blockchain does NOT provide which attribute?

A. Security through distribution

B. Anonymity through cryptography

C. Fault Tolerance through distribution

D. Immutability through hashing

Blockchain allows for which of the following?

A. Anonymous Cryptography

B. Trust in central authorities

C. A fast and efficient ledger

D. A peer to peer ledger without the need of a third party

What is dApp?

A. A decentralized application

B. A dishonest application

C. A decoded application

D. A distributed application

How would a developer make a change to Blockchain protocol?

A. There are no restrictions, a developer could just change the code

B. A developer would need to initiate a hard fork

C. There is no way to change Blockchain protocol

D. change the orderer configuration

E. None of the above

Transactions per second (TPS) for a Proof-of-Work Blockchain are approximately?

A. 24K per second

B. 175K per second

C. Only limited to the number of nodes on the network

D. 7-15 per second

E. None of the above

Why is Blockchain important?

A. It allows for a secure, global, and peer to peer record of data

B. It provides anonymity when making transactions

C. It is a free, trusted bank

D. It replaces all ledgers

E. All of the above

Blockchain 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

One of Blockchain's primary uses of cryptography is ___________.

A. Keeping the IP addresses a secret

B. Allowing users to communicate with each other anonymously

C. Keeping the network configuration a secret.

D. Providing a public and private encryption key

The transaction has contained in a block is the ___________.

A. Metadata used for ID

B. Same as the user private key

C. Digital fingerprint of the block

D. Unique number to show it's a Bitcoin block