Free Certified Blockchain Professional (CBCP) Ethereum Questions and Answers

Question 1

Which year saw the development of blockchain technology?

Accepted Answer

2008

Answer

2010

Answer

2015

Answer

2009

Question 2

What year did Ethereum get its start?

Accepted Answer

2015

Answer

2017

Answer

2018

Answer

2020

Question 3

Who did not create Ethereum?

Accepted Answer

Satoshi Nakamoto

Answer

Charles Hoskinson

Answer

Gavin Wood

Answer

Vitalik Buterin

Question 4

How long does it take to mine a block of Ethereum?

Accepted Answer

0

Answer

12

Answer

10

Answer

30

Question 5

Choose the consensus algorithm that Ethereum's PoW mechanism will employ.

Accepted Answer

Ethash

Answer

SHA256 algorithm

Answer

Dagger Hashimoto

Answer

Etchash

Question 6

What does Ethereum's Ghost protocol entail?

Accepted Answer

None of the above.

Answer

A way of rewarding miners for mining Ethereum blocks.

Answer

A way of processing transactions without broadcasting them.

Answer

A way of paying miners for mining broadcasted transactions.

Question 7

Which of the following distinguishes Ethereum from Bitcoin?

Accepted Answer

Bitcoin scrypt is turing-complete while Ethereum's Solidity is turing-incomplete.

Answer

Ethereum is deflationary while Bitcoin is inflationary.

Answer

Ethereum is more accepted compared to Bitcoin.

Answer

Ethereum uses PoS while Bitcoin uses PoW.

Question 8

When was the genesis block of Ethereum mined?

Accepted Answer

2015

Answer

2009

Answer

2018

Answer

2013

Question 9

In the context of Ethereum, what is gas?

Accepted Answer

The required cost to perform a transaction on the network.

Answer

The gas produced by Ethereum servers.

Answer

The security level of the Ethereum network.

Answer

The computational resources required to perform transactions.

Question 10

What do Ethereum main blocks consist of?

Accepted Answer

Blocks created during the PoW competition that did not get selected.

Answer

Blocks that have already been mined and added to the blockchain.

Answer

Unwanted mined Ethereum blocks.

Answer

None of the above.