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Which Blockchain protocol uses Proof of Work Consensus? Select all that apply

A.

Hyperledger

B.

Corda

C.

Bitcoin

D.

Ethereum

E.

All of the above

What does a Merkle tree provide?

A.

Efficient block lookups and protection against forgery

B.

Anonymity and transparency

C.

A Turing complete distributed network

D.

A way to deploy smart contracts onto the Blockchain

E.

All of the above

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

A.

increase the use of cryptocurrency

B.

speed up the internet

C.

make Bitcoin less expensive

D.

increase device connectivity

How is Blockchain benefiting voting?

A.

By revealing the identity of each voter and who or what they voted for

B.

By controlling who gets to vote

C.

By only allowing a certain number of votes per person

D.

By allowing voters to trust their vote has been counted

Which of the following problems did Blockchain solve for cryptocurrencies?

A.

Anonymity

B.

Double Spending

C.

Destination of currencies

D.

None of the above