Exin BLOCKCHAINF Exam Practice Test Instant Access

Question 1

What happens if a block is confirmed at the same time?

AThe 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.

BNodes select which block to be added to the Blockchain

CBoth chains are deleted, and the unconfirmed transactions are added back to the pool

DThe Orderer Block confirms which block has the most confirmed transactions

ENone of the above

Answer : B

Question 2

In a private business Blockchain, transactions are endorsed by______________.

Aonly relevant business participants

Bonly the smart contract developer

Call the nodes on the Blockchain

Dall participants with access to the network

Answer : A

Question 3

One of Blockchain's primary uses of cryptography is___________.

Akeeping the network configuration a secret

Bproviding a public and private encryption key

Callowing users to communicate with each other anonymously

Dkeeping the I.P. addresses a secret

Answer : B

Question 4

What is a hash function?

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

BA function that stores data behind a key

CA two-way function used for condensing information

DThe block-ID of the block

EAll the above

Answer : D

Question 5

One solution to increasing Blockchain Transactions Per Second (TPS) is________.

Aadding more network nodes

Boff-chain transactions

Cusing faster microprocessors

Dfewer regulations

Answer : B

Question 6

Blockchain is always decentralized.

ATrue

BFalse

Answer : A

Question 7

What is the focus or primary goal of a private Blockchain? Select all that apply.

ATo provide anonymity in business

BTo save money by eliminating intermediaries

CTo create a distributed database that allows for CRUD

DTo provide transparency and trust for business while remaining secure

Answer : D

Exin Blockchain Foundation BLOCKCHAINF Exam Practice Test