Question 1

The Blockchain combined with the Internet of Things (IoT) will dramatically ____________.

Options :

A : increase the use of cryptocurrency

B : speed up the internet

C : make Bitcoin less expensive

D : increase device connectivity

Answer: D

Question 2

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 3

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 4

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

Options :

A : True

B : False

Answer: B

Question 5

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