Transactions can be only added to a blockchain.

AFALSE

BTRUE

Answer : A

A Smart Contract is most like which classical programming object?

AClass

BVariable

CMethod

DFunction

Answer : D

How are blocks of data ''chained'' together to ensure the integrity of transactions?

AThe hash of the previous block is written to the header of the current block

BThe ID of the previous block is stored in the current block

CA public key is stored in each block for data decryption

DThe hash of the genesis block is kept in all block headers

Answer : A

In public key cryptography, the public key is used to:

ASign/approve any transaction/action that might be made by the holder of the key pair

BVerify the digital signature of a given key pair

CDecrypt the private key so valid transactions/actions can be performed

DEncrypt the private key

Answer : D

Which one of the following is true regarding Smart Contracts on the Ethereum blockchain?

AThey provide added security over off-chain transaction code on other blockchain networks

BBecause they are compiled into bytecode they cannot be used in an unintended manner

CAny flaw discovered in their code can quickly be updated and redeployed

DThey are Turing complete and deterministic in nature

Answer : D

Free Practice Questions for Blockchain CBSA Exam