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39 interview questionsfor developers (2025)

Test your developer skills before an interview with 39 corrected questions on 80+ topics. Beginner, Intermediate or Expert level.

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39 questions
Easy
15 votes524 runs0 comment

What does EVM stand for?

Blockchain Expert
ethereum
virtual machine
Anonymous authorat Nov 7, 2022
Medium
3 votes498 runs0 comment

What is the private key of a cryptocurrency wallet?

Blockchain Expert
cryptocurrency
wallet
Anonymous authorat Nov 11, 2022
Medium
3 votes483 runs1 comment

Layer 2 is a technology that aims to improve the functionality of certain blockchains and relieve the network of a main blockchain (Layer 1).

Blockchain Expert
blockchain
layer 2
Anonymous authorat Nov 14, 2022
Easy
3 votes479 runs0 comment

What does NFT stand for?

Blockchain Expert
blockchain
cryptocurrency
Anonymous authorat Sep 19, 2022
Medium
2 votes453 runs0 comment

What are the main differences between an NFT and a classic token?

Blockchain Expert
blockchain
token
nft
Anonymous authorat Nov 21, 2022
Medium
2 votes449 runs0 comment

What is the scalability of a blockchain?

Blockchain Expert
blockchain
scalability
Anonymous authorat Nov 21, 2022
Medium
1 vote452 runs0 comment

DeFi: Offers an alternative to traditional centralized finance, Implements brand-new finance mechanics

Blockchain Expert
finance
decentralized
Anonymous authorat Nov 15, 2022
Easy
1 vote441 runs0 comment

What does DeFi stand for?

Blockchain Expert
blockchain
finance
Anonymous authorat Sep 19, 2022
Medium
1 vote48 runs0 comment

What is Web3.0?

Blockchain Expert
web3
blockchain
Anonymous authorat Mar 15, 2022
Hard
0 vote520 runs1 comment

A centralized blockchain:

Blockchain Expert
blockchain
transaction fees
Anonymous authorat Nov 8, 2022
Hard
0 vote462 runs1 comment

In the blockchain ecosystem, a bridge is a smart contract or a set of smart contracts that allows the exchange of cryptocurrencies between two different blockchains.

Blockchain Expert
smart contract
blockchain
Anonymous authorat Nov 14, 2022
Easy
0 vote456 runs0 comment

When was the concept of Bitcoin created?

Blockchain Expert
history
Anonymous authorat Sep 19, 2022
Expert
0 vote455 runs0 comment

What is the standard for NFTs?

Blockchain Expert
standards
Anonymous authorat Nov 21, 2022
Medium
0 vote455 runs0 comment

What are the different types of blockchains?

Blockchain Expert
blockchain
types
Anonymous authorat Sep 19, 2022
Hard
0 vote454 runs0 comment

What are the different types of consensus mechanisms used in blockchains?

Blockchain Expert
blockchain
consensus
Anonymous authorat Sep 19, 2022
Easy
0 vote452 runs1 comment

Once data is recorded on the blockchain, it is immutable and available to everyone.

Blockchain Expert
blockchain
data
Anonymous authorat Sep 19, 2022
Easy
0 vote448 runs0 comment

When was the first Bitcoin block mined?

Blockchain Expert
blockchain
bitcoin
Anonymous authorat Nov 14, 2022
Easy
0 vote442 runs0 comment

During a transaction, the choice of network corresponds to :

Blockchain Expert
blockchain
network
Anonymous authorat Nov 21, 2022
Medium
0 vote437 runs0 comment

A cryptocurrency wallet works with a private key.

Blockchain Expert
cryptocurrency
wallet
Anonymous authorat Nov 22, 2022
Medium
0 vote336 runs0 comment

What is a DApp?

Blockchain Expert
blockchain
smart contract
Anonymous authorat Sep 19, 2022