최신 BLOCKCHAINF 무료덤프 - EXIN Blockchain Foundation

A. Keeping the IP addresses a secret

B. Providing a public and private encryption key

C. Keeping the network configuration a secret.

D. Allowing users to communicate with each other anonymously

A. True

B. False

A. in a secure database

B. a bank account

C. A digital wallet

D. in a secure ledger

A. the record is permanent
Reference can be changed by an authorized person

B. the record is stored on a central node

C. the record is moved to a secure server

D. it can be changed by an authorized person

A. Nodes select which block to be added to the Blockchain

B. None of the above

C. Both chains are deleted, and the unconfirmed transactions are added back to the pool

D. The Orderer Block confirms which block has the most confirmed transactions

E. The blocks splits into two chains. Blocks are then added to each chain until one chain becomes larger. The longest chain is then considered to be the Blockchain.

A. Proof of Activity

B. All of the above

C. Proof of Work

D. Proof of Burn

E. Proof of Stake

A. consumers demand to know where their food comes from

B. All of the above

C. they have the potential to provide fast, specific supplier data

D. it allows farm to table accountability for safety

E. it prevents food waste if a food contamination problem occurs

A. another application that runs on a Blockchain

B. the same as all other cryptocurrencies

C. a replacement currency for the U.S. dollar

D. replacing bartering in many parts of the world