Ethereum 2.0 MCQs

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1. : What is the main upgrade introduced in Ethereum 2.0?





2. : Ethereum 2.0 is also commonly referred to as?





3. : What is the minimum number of ETH required to become a validator in Ethereum 2.0?





4. : Which chain was introduced as part of Ethereum 2.0 Phase 0?





5. : Which consensus mechanism was replaced by Proof of Stake in Ethereum 2.0?





6. : What is the purpose of sharding in Ethereum 2.0?





7. : What role do validators play in Ethereum 2.0?





8. : Which event marked the full transition from Ethereum 1.0 to Ethereum 2.0?





9. : When was the Ethereum Merge successfully completed?





10. : What does PoS reduce compared to PoW in Ethereum?





11. : Ethereum 2.0 primarily aims to solve which blockchain issue?





12. : The Beacon Chain is responsible for?





13. : What happens if a validator acts maliciously in Ethereum 2.0?





14. : How are new blocks proposed in Ethereum 2.0?





15. : Which phase of Ethereum 2.0 introduced sharding?





16. : The Merge connected Ethereum’s mainnet with?





17. : What is the approximate block time in Ethereum 2.0 after the Merge?





18. : Staking rewards in Ethereum 2.0 are given in?





19. : What major benefit does Ethereum 2.0 bring for sustainability?





20. : Who is the co-founder of Ethereum behind the Ethereum 2.0 vision?





21. : Ethereum’s original consensus mechanism before 2.0 was?





22. : Which algorithm secures Ethereum 2.0 consensus?





23. : In Ethereum 2.0, what ensures decentralization?





24. : Validators in Ethereum 2.0 earn rewards for?





25. : What happens to gas fees after Ethereum 2.0?





26. : The Merge was a shift from which layer to which layer?





27. : What is slashing in Ethereum 2.0?





28. : Ethereum 2.0 can support more transactions per second due to?





29. : What was one of the environmental criticisms of Ethereum 1.0?





30. : Ethereum 2.0 makes the network more?





31. : Which upgrade mechanism allowed The Merge to happen smoothly?





32. : Validators are randomly chosen using?





33. : What is the incentive for staking ETH in Ethereum 2.0?





34. : Which clients run Ethereum 2.0 consensus?





35. : Ethereum 2.0 helps dApps by providing?





36. : What happens if a validator is offline too long?





37. : Ethereum 2.0’s validator system is similar to?





38. : How many shards were initially proposed for Ethereum 2.0?





39. : The Merge removed the need for?





40. : Which wallet type supports Ethereum 2.0 staking?





41. : Which layer executes smart contracts after the Merge?





42. : Ethereum’s PoS makes attacks more costly by?





43. : Who coordinates validator committees in Ethereum 2.0?





44. : What is the maximum reward percentage validators can earn annually?





45. : Ethereum 2.0 staking can be done via?





46. : The Merge primarily focused on?





47. : Which phase is still expected in future Ethereum upgrades?





48. : What ensures security in Ethereum 2.0 PoS?





49. : After the Merge, Ethereum’s energy consumption dropped by about?





50. : Ethereum 2.0 represents a shift toward?





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