Why might a permissioned blockchain with a Practical Byzantine Fault Tolerance (PBFT) consensus model be more suitable for regulatory compliance than a public Proof of Work blockchain?

Because PBFT allows only known, vetted participants to validate transactions, making it easier to enforce compliance and auditability

Because PBFT eliminates the need for any external audits

Because PBFT automatically encrypts all data to meet privacy regulations

Because PBFT is faster and uses less energy than Proof of Work

In a distributed financial system, what is the primary purpose of a consensus mechanism?

To ensure that all participating nodes agree on a single, consistent state of the ledger

To encrypt all transaction data so that only authorized parties can read it

To provide a backup copy of the ledger on each node for disaster recovery

To speed up transaction processing by allowing nodes to process transactions independently

A consortium of insurance companies is implementing a permissioned blockchain to share claims data. They need to ensure that no single company can alter historical claims records. Which consensus feature is most important?

A high block size to store more claims data

A public ledger to increase transparency

A short block time to speed up processing

A quorum requirement that prevents any single node from finalizing a block

A blockchain network uses a PoS consensus. A validator is found to have proposed conflicting blocks in the same slot. What is the most likely consequence?

The network automatically forks to resolve the conflict

The validator's stake is slashed

The validator's rewards are doubled

The validator is removed from the network permanently

A fintech company is building a hybrid system that uses a permissioned blockchain for internal settlement and a public blockchain for token issuance. What is the primary reason for using different consensus models in each part?

To comply with different regulatory requirements

To simplify the overall system architecture

To optimize for the trust model and performance needs of each environment

To reduce overall transaction costs

EC-CouncilBlockchain Fintech Certification

Domain 2Objective 3

Consensus Models in Financial Systems BFC Practice Questions (Page 3)

Part of the Consensus Mechanisms for Financial Systems domain, which makes up ~11% of our current practice bank.

35questions here

7free pages

5concepts

Questions 11–15

11foundation · easy
Why might a permissioned blockchain with a Practical Byzantine Fault Tolerance (PBFT) consensus model be more suitable for regulatory compliance than a public Proof of Work blockchain?
Select an answer first
12foundation · easy
In a distributed financial system, what is the primary purpose of a consensus mechanism?
Select an answer first
13application · medium
A consortium of insurance companies is implementing a permissioned blockchain to share claims data. They need to ensure that no single company can alter historical claims records. Which consensus feature is most important?
Select an answer first
14expert · hard
A blockchain network uses a PoS consensus. A validator is found to have proposed conflicting blocks in the same slot. What is the most likely consequence?
Select an answer first
15application · medium
A fintech company is building a hybrid system that uses a permissioned blockchain for internal settlement and a public blockchain for token issuance. What is the primary reason for using different consensus models in each part?
Select an answer first

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