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Proof of Stake (PoS) MCQs

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1. : Proof of Stake (PoS) selects validators based on what?





2. : Which blockchain was the first to implement Proof of Stake?





3. : What is the main advantage of PoS over PoW?





4. : In PoS, the probability of validating the next block depends on?





5. : Which major blockchain shifted from PoW to PoS in 2022?





6. : Validators in PoS earn rewards for?





7. : Which of the following is a disadvantage of PoS?





8. : What is the minimum ETH required to run a validator node in Ethereum PoS?





9. : In PoS, “slashing” is a penalty given to validators for?





10. : Which consensus mechanism is more eco-friendly?





11. : In PoS, validators are chosen using?





12. : Which blockchain uses PoS with “delegated staking”?





13. : Which PoS variant allows token holders to delegate their stake to validators?





14. : Cardano uses which type of PoS protocol?





15. : In PoS, what discourages malicious activity?





16. : Which PoS blockchain claims high scalability with low fees?





17. : What happens to rewards if a validator node in PoS stays offline?





18. : Ethereum’s transition to PoS was called?





19. : Which PoS network is known for fast finality and Tendermint consensus?





20. : What is the main economic incentive for validators in PoS?





21. : Which statement about PoS is true?





22. : Which attack is less likely in PoS compared to PoW?





23. : In DPoS, who votes for block producers?





24. : Which PoS protocol is designed for Ethereum’s consensus?





25. : What is the “nothing-at-stake” problem in PoS?





26. : Which PoS chain focuses on interoperability between blockchains?





27. : What makes PoS more energy efficient?





28. : What happens to staked coins in case of validator misbehavior?





29. : Which PoS system uses epochs and slots for block production?





30. : Delegated Proof of Stake (DPoS) is known for?





31. : Which PoS blockchain is widely used for NFT minting after Ethereum Merge?





32. : In PoS, who verifies transactions?





33. : Which factor increases validator chances in PoS?





34. : The “staking yield” in PoS refers to?





35. : Which PoS network uses “Proof of History” along with staking?





36. : What is the key benefit of staking coins?





37. : In PoS, what replaces the mining competition of PoW?





38. : Which PoS system offers “liquid staking” through tokens?





39. : In Ethereum PoS, blocks are confirmed in how many seconds?





40. : Which PoS blockchain uses parachains?





41. : Which of the following is a criticism of PoS?





42. : In PoS, validators are rewarded mainly in?





43. : Which blockchain governance model is often linked with DPoS?





44. : What is the lock-up period in PoS staking?





45. : Which PoS protocol emphasizes Byzantine Fault Tolerance (BFT)?





46. : How does PoS improve scalability?





47. : Which PoS blockchain emphasizes academic research for its protocol design?





48. : Which PoS mechanism punishes dishonest validators?





49. : In Ethereum PoS, validators propose blocks in groups called?





50. : The main trade-off of PoS is?





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