Free Practice Questions for Blockchain CBBF Exam

Through Merkle trees

Through public/private key cryptography

Through consensus algorithms such as Proof of Work

By publishing only the block address

None of the above

True

False

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

It provides anonymity when making transactions

It is a free, trusted bank

It replaces all ledgers

All of the above

another application that runs on a Blockchain

the same as all other cryptocurrencies

replacing bartering in many parts of the world

a replacement currency for the U.S. dollar

Always permissioned and private

It can employ smart contracts

Modular design allowing for flexibility in solution

Multiple consensus methods can be chosen for use

All the above

a database ledger

a triple-entry ledger

a double-entry ledger

a genesis block

Combined with other technologies

Used for financial applications

Used alone

Used as an alternative to a database

Consumers demand to know where their food comes from

It allows farm to table accountability for safety

They have the potential to provide fast, specific supplier data

It prevents food waste if a food contamination problem occurs.

All of the above

A digital currency

An unchangeable record

A database of usable secret data

A Smart Contract

All of the above

metadata that is

number of blocks

Merkle tree hash

size of the memory cache