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Web3 & Solidity Tutorial
BOSS QUIZ
10 questions · 5 minutes · pass at 70% to clear the track.
05:00
Start
Q1.
Foundry tests are written in…
from Foundry
Rust
Solidity
JS only
YAML
Q2.
The canonical pattern to prevent it is…
from Reentrancy
Checks-Effects-Interactions
Try / catch only
Lower gas
Solidity 0.8 alone
Q3.
EVM stands for…
from Intro
Ethereum Virtual Machine
Eager Verifier Machine
Encrypted Validation Module
Etherum Value Map
Q4.
Run the test suite with…
from Foundry
forge test
foundry run
truffle exec
hardhat run
Q5.
ERC-20 is the standard for…
from ERC-20 (tokens)
Fungible tokens
NFTs
DAO voting
Multisigs
Q6.
Ethereum smart contracts are most commonly written in…
from Intro
Rust
Solidity
JavaScript
Java
Q7.
A way to save gas is to…
from Gas & Fees
Use memory in loops a lot
Pack storage slots + emit events instead of storing logs
Always use uint8
Avoid view functions
Q8.
Smart contracts run on…
from Intro
Your laptop
A blockchain, executed by every node
A CDN
A SaaS
Q9.
ERC-721 is the standard for…
from ERC-20 (tokens)
Fungible tokens
Non-fungible tokens
Stablecoins only
Domains only
Q10.
Reentrancy attacks exploit…
from Reentrancy
State updated AFTER an external call
Bad compilers
Block timestamps
Math
Submit
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