Bộ câu hỏi về Blockchain cho trao đổi tin nhắn an toàn trong VANET

The main problem that VANET is facing is what?

• Issue of information authenticity

• All are correct

• Lack of information transparency

• Delay in information transmission

What does public blockchain store in a country?

• Transparency of nodes and information

• All are wrong

• Authentication of nodes and information

• Transparency of information

Which consensus mechanism is used in public blockchain?

• Proof of Work (PoW)

• Delegated Proof of Stake (DPoS)

• All are incorrect

• Proof of Stake (PoS)

What consensus mechanism is commonly used in private blockchains?

• Proof of Elapsed Time (PoET)

• Federated Byzantine Agreement (FBA)

• Proof of Stake (PoS)

• Proof of Work (PoW)

Why is PoW considered a safe consensus mechanism?

• It has been proven and reliable

• It has good scalability

• It is not vulnerable

• All are wrong

What is the main objective of the article?

• Research on secure message exchange

• Research on applying blockchain in VANET

• Research on VANET

• Research on blockchain

What is the approach of the article to determine the transparency of the node and information?

• All are incorrect

• Use combined reliability model

• Use data-based reliability model

• Use entity-based reliability model

Why is storing information in separate national blockchains appropriate?

• Because it creates transparency

• Because it minimizes delay

• All are correct

• Because the information of a country is not necessary for other countries

Which consensus mechanism is used to verify transactions in Bitcoin?

• Federated Byzantine Agreement (FBA)

• Proof of Stake (PoS)

• Proof of Elapsed Time (PoET)

• Proof of Work (PoW)

Why is PoS considered an energy-efficient consensus mechanism?

• Because it does not require proof of the authenticity of each transaction

• Because it relies on the wealth or stake of the participants

• Because it uses a fair lottery system

• All are incorrect