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Home » Quiz advanced – lessons nr 41-50

3. Advanced Course 50. Types of Proof-of-Stake Consensus Mechanisms: DPoS, LPoS and BPoS Quiz advanced – lessons nr 41-50

Quiz advanced – lessons nr 41-50

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Question 1 of 10

1. Question
What is Liquid Staking Derivatives (LSD)?
- Tokens that represent other forms of wealth
- Tokens that are used exclusively for trading
- Tokens that are not tied to any assets
- Tokens that have no use in DeFi
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Question 2 of 10

2. Question
What are blockchain oracles?
- Oracles are smart contracts on the Ethereum network
- Oracles are platforms for trading cryptocurrencies
- Oracles are physical devices that collect data
- Oracles are intermediaries between the cryptocurrency world and the outside world
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Question 3 of 10

3. Question
According to the text, what is a key advantage of the Ether.js library compared to Web3.js?
- It is lighter, fully supports TypeScript, and has built-in key security features
- It is older and has much larger community support
- It is used by large companies like Microsoft and IBM
- It is the only library that allows the creation of dApps
Correct

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Question 4 of 10

4. Question
According to the text, what are recursive STARK proofs?
- A technology where one cryptographic proof can confirm the validity of many other proofs
- Proofs that confirm a user's identity on the network
- A system that only allows one transaction to be processed at a time
- A programming language created by StarkWare for writing smart contracts
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Question 5 of 10

5. Question
What is the fundamental principle of optimistic rollups, from which they get their name?
- They assume by default that all transactions are valid, unless a flaw is proven
- They require a cryptographic proof of validity for every single transaction
- They publish the full data of every transaction directly on the main Ethereum chain
- They reject all transactions that do not have a digital signature
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Question 6 of 10

6. Question
What is the Optimism network?
- A ZK-rollup network based on Ethereum
- A blockchain interoperability protocol
- An Ethereum-based rollup solution that moves computation and data off the main chain
- A cryptocurrency native to Optimism
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Question 7 of 10

7. Question
According to the text, how is governance organized within the Optimism network’s “Optimism Collective”?
- It is divided into the Token House (where OP token holders vote) and the Citizens' House (which manages public funds)
- All decisions are made by a single, centralized sequencer belonging to the network's creators
- Governance is handled through a Proof-of-Work consensus mechanism, similar to Bitcoin
- Only developers who received grants in the first airdrop have the right to vote
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Question 8 of 10

8. Question
What is the main role of an RPC node in Web3 infrastructure?
- It acts as a server gateway that receives requests from applications (e.g., a wallet) and communicates with the blockchain network on their behalf
- It is a consensus mechanism that decides the order of transactions in a block
- t is used exclusively to store a copy of the entire blockchain for archival purposes
- It is a cryptocurrency wallet that allows for the direct sending of funds
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Question 9 of 10

9. Question
How is SEI Network different from traditional blockchain ecosystems?
- SEI Network is based on Proof-of-Work instead of Proof-of-Stake
- SEI Network does not have the ability to connect to other blockchain layers
- SEI Network is the first blockchain oriented to a central limit order book (CLOB)
- SEI Network is not based on the Cosmos ecosystem
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Question 10 of 10

10. Question
What is the fundamental difference in how validators are chosen between PoS and DPoS?
- In DPoS, token holders vote for delegates who validate blocks, whereas in classic PoS, anyone can become a validator by locking up a sufficient stake
- In PoS, one does not need to own cryptocurrency to become a validator
- DPoS consumes significantly more energy than classic PoS
- PoS is only used by Ethereum, while DPoS is used by all other networks
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3. Advanced Course

Course Home Expand All

41. Liquid Staking Ethereum and LSD tokens. What do you need to know about it?

42. Top 10 blockchain oracles. How do they work? How do they differ?

43. What are Web3.js and Ether.js? What are the main differences between them?

44. What is StarkWare, and recursive validity proofs?

45. Quant Network: scalability of the future

46. Polygon zkEVM – everything you need to know

47. What is Optimism (OP), and how do its roll-ups work?

48. What are RPC nodes, and how do they work?

49. SEI Network: everything you need to know about the Tier 1 solution for DeFi

50. Types of Proof-of-Stake Consensus Mechanisms: DPoS, LPoS and BPoS

1 Quiz

Quiz advanced – lessons nr 41-50

51. Bedrock: the epileptic curve that ensures security!

52. What is Tendermint, and how does it work?

53. Pantos: how to solve the problem of token transfer between blockchains?

54. What is asymmetric encryption?

55. Base-58 function in cryptocurrencies

56. What Is the Nostr Protocol and How Does It Work?

57. What Is the XDAI Bridge and How Does It Work?

58. Solidity vs. Rust: What are the differences between these programming languages?

59. What is a Real-Time Operating System (RTOS)?

60. What is the Ethereum Rinkeby Testnet and how does it work?

1 Quiz

Quiz advanced – lessons nr 51-60

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