Easy Blockchain Developer questions

34 questions · 5 points each for a correct first answer.

1. 1.What gas measuresevm, gaseasy
2. 2.Changing deployed codesmart-contracts, upgradeabilityeasy
3. 3.Keys and addressescryptography, walletseasy
4. 4.Letting a contract spend tokenserc-20, tokenseasy
5. 5.storage, memory, calldatasolidity, gaseasy
6. 6.Why emit eventssolidity, eventseasy
7. 7.Standard for unique tokenstokens, erc-721easy
8. 8.What msg.sender issolidity, access-controleasy
9. 9.What links one block to the nextblockchain-fundamentals, cryptographyeasy
10. 10.The account nonceblockchain-fundamentals, evm-fundamentalseasy
11. 11.EOA vs contract accountevm-fundamentalseasy
12. 12.Wei and etherevm-fundamentals, solidityeasy
13. 13.view vs puresolidityeasy
14. 14.Sending ETH to a functionsolidityeasy
15. 15.receive vs fallbacksolidityeasy
16. 16.Reading a missing mapping keysolidityeasy
17. 17.What revert undoessolidity, evm-fundamentalseasy
18. 18.What a modifier doessolidityeasy
19. 19.Private variables are public datasmart-contract-security, solidityeasy
20. 20.constant vs immutablesolidity, gas-optimisationeasy
21. 21.One contract, many token typestoken-standardseasy
22. 22.Token decimalstoken-standards, dapp-frontendeasy
23. 23.Integer division resultsolidityeasy
24. 24.Verifying a contract on Etherscandeployment, smart-contract-securityeasy
25. 25.Where to try a deploymentdeployment, testing-and-fuzzingeasy
26. 26.Sharing a seed phrasecryptography, smart-contract-securityeasy
27. 27.When a block is finalblockchain-fundamentalseasy
28. 28.Foundry's local nodetesting-and-fuzzing, foundryeasy
29. 29.Why use OpenZeppelintoken-standards, smart-contract-securityeasy
30. 30.Properties of keccak256cryptographyeasy
31. 31.What a rollup doeslayer-2easy
32. 32.Function selectorevm-fundamentals, solidityeasy
33. 33.Running out of gasevm-fundamentalseasy
34. 34.external vs internalsolidityeasy