CBBF Sample Questions Answers

True

False

Anonymous Cryptography

Trust in central authorities

A fast and efficient ledger

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

Security through distribution

Anonymity through cryptography

Fault Tolerance through distribution

Immutability through hashing

determines which node stores the assets

records the transfer of an asset between participants

proves ownership on the Blockchain

provides privacy to users on the Blockchain

Security

Immutability

Fault tolerance

Fact Transaction time

True

False

True

False

Efficient block lookups and protection against forgery

Anonymity and transparency

A Turing complete distributed network

A way to deploy smart contracts onto the Blockchain

All of the above

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.

all records on a database

any data on the ledger

anything of value requiring accountability of ownership

any record on a private network

A financial transaction

A vote cast in an election

A personal medical record

Romeo and Juliet: The entire play

All of the above

True

False

Hyperledger

Corda

Bitcoin

Ethereum

All of the above

Any business transactions

International shipping

The transportation industry

Financial transactions

Voting

A video sharing website

Medical records

Identity management

All of the above

Metadata used for ID

Same as the user private key

Digital fingerprint of the block

Unique number to show it’s a Bitcoin block

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

True

False

A one-way function that converts input to a unique string output

A function that stores data behind a key

A two-way function used for condensing information

The block-ID of the block

All the above

Where the Blockchain is created

Located with the owner of the server

There is no central server, it is distributed

Orderer Node

None of the above

By sharing the same transaction details

Information of the previous block is embedded into the current block through hashing

Information of the current block is embedded into the genesis block

With a physical chain

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