Top 20 Ethereum Interview Questions & Answers

Copyright © Blockchain Council www.blockchain-council.org
Top 20 Ethereum Interview Questions and
Answer
When we talk about cryptocurrencies, the Bitcoin is the pioneering currency in this
league. But, Bitcoin has its own set of advantages and disadvantages, and it
paved the way for new currencies to emerge. One such addition in this league is
Ethereum. Ethereum is a public Blockchain solution, and there are great prospects
for those who are seeking Ethereum as a career option.
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It provides an online platform for app development and hence there is a need for
Ethereum developer. Blockchain Council is a leading platform providing Ethereum
online certification. So, if you are willing to become an Ethereum expert, we have
brought together the following set of questions that will help you in fetching a good
Ethereum job.
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1. What is Ethereum?
It is a public Blockchain and provides an open-source platform for decentralized
application development.
2. Who founded Ethereum?
Vitalik Buterin and Gavin Wood are the names behind the surge of Ethereum.
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3. What is EVM?
It means Ethereum Virtual Machine, which is a decentralized machine that
handles scripts using public nodes Network. It makes use of Gas as an internal
pricing system.
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3. What is EVM?
It means Ethereum Virtual Machine, which is a decentralized machine that
handles scripts using public nodes Network. It makes use of Gas as an internal
pricing system.
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4. Name some use cases of Ethereum?
Ethereum finds a wide number of uses like :
• Decentralized finance
• Digital Identity
• Tokenization
• Payments
• Health applications
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5. What is EEA?
EEA or Enterprise Ethereum Alliance was created in March 2017. This alliance
has more than 100 non-profit organizations. This alliance aims to facilitate a
permissioned implementation of Ethereum.
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6. What is the token value of Ethereum?
ETH is the token value of Ethereum.
7. Tell us about Ethereum node?
These nodes in the Ethereum network interact with each other using the
Ethereum protocol. When it comes to interaction with the outside world using the
JSON-RPC interface.
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8. What is Ethere?
It is also known as crypto-fuel, which fuels the Ethereum network. It also powers
smart contracts and provides nodes incentive when it validates Ethereum
Blockchain blocks.
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8. What is Ethere?
It is also known as crypto-fuel, which fuels the Ethereum network. It also powers
smart contracts and provides nodes incentive when it validates Ethereum
Blockchain blocks.
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9. How is Wei different from Ether?
The smallest unit of Ether is called as Wei. 1 Ether = 1018 Wei.
10. Ethereum uses which consensus mechanism?
Ethereum makes use of Proof-of-Work consensus mechanism. However, it is
under the process of shifting this to Proof-of-Stake, which is more environment-
friendly.
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11. How is Bitcoin different from Ethereum Blockchain?
The basic difference between the two lies in the fact that Bitcoin is the first
generation Blockchain technology while Ethereum offers a more scalable and
programmable Blockchain solution. It supports smart contracts and also promotes
decentralized application development.
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12. What is dApps?
dApps or decentralized applications are the applications developed on a
Blockchain platform and makes use of the features of Blockchain technology. It
incentivization to the nodes for the functioning of dApps. Ethereum is a popular
platform for the development of dApps.
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13. Where are the transactions recorded?
The transactions are recorded on public ledger on Ethereum, but if a permissioned
network is used, then it is stored in the private ledger.
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14. Which programming language is used for dApps and smart
contracts?
Solidity is the main programming language. Smart Contracts on Ethereum uses
SCL or Smart Contract Language like Bamboo, Serpent, Pyramid, L4, Thereym
bytecode.
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15. What do you know about Truffle?
It is a testing and development environment for Ethereum. It offers an asset
pipeline which makes it handle Ethereum based projects. It is the right framework
for Ethereum developers.
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16. What is the block time?
The Block time on Ethereum is 2 Kb.
17. What is the average block size on Ethereum?
The average block size is 14 seconds.
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18. What are the different types of Ethereum network?
There are three types of Ethereum network:
Private Network
Test Network
Live Network
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19. Can transactions be kept hidden on the Ethereum network?
No transactions can be kept hidden in the Ethereum network.
20. How to mine Etheres?
For the mining of Ether, one needs to have a wallet and tools like Geth CLI, along
with it, you need to participate in the Network and help in transactions.
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Let Your Career Grow With Blockchain Council
If you are willing to become Ethereum developer or Ethereum expert, then you
can go for Ethereum online certification. This program covers all aspects pf
Ethereum and also enable you to learn about application development.
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Blockchain Council Certifications
You can check out our certifications, and kick start your career in the Blockchain
space today.
● Certified Blockchain Expert
● Certified Blockchain Developer
● Certified Smart Contract Developer
● Certified Solidity Developer
● Certified Ethereum Developer
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THANK YOU!
Any questions?
You can mail us at
hello@blockchain-council.org
Copyright © Blockchain Council www.blockchain-council.org 23

Top 20 Ethereum Interview Questions & Answers

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