Question 1

Once a record has been added to a Blockchain it can be altered.

Options :

A : True

B : False

Answer: B

Question 2

Transactions per second (TPS) for a Proof-of-Work Blockchain are approximately?

Options :

A : 24K per second

B : 175K per second

C : Only limited to the number of nodes on the network

D : 7-15 per second

E : None of the above

Answer: D

Question 3

In a private business Blockchain, transactions are endorsed by______________.

Options :

A : only relevant business participants

B : only the smart contract developer

C : all the nodes on the Blockchain

D : all participants with access to the network

Answer: A

Question 4

The common safe place to store personal cryptocurrency is_____________.

Options :

A : A digital wallet

B : in a secure ledger

C : a bank account

D : in a secure database

Answer: A

Question 5

____________ledger technology is referred to as DLT.

Options :

A : Distributed

B : Decentralized

C : Database

D : All of the above

E : None of the above

Answer: A

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