Question 1

What are the drawbacks of using Blockchain? Select all that apply

Options :

A : High cost of developers

B : Changing technology and the lack of a stable standard

C : Its use of cryptography

D : Its use of new applications

Answer: B

Question 2

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

Options :

A : True

B : False

Answer: B

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

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 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