How can a consensus model impact the auditability of a financial system?

By allowing auditors to modify transaction records to correct errors

By hiding transaction details from auditors to protect privacy

By providing an immutable and transparent record of all transactions that auditors can verify

By requiring auditors to run a full node to access any data

A financial regulator is reviewing a blockchain-based settlement system that uses Proof of Stake. The regulator is concerned about the concentration of voting power among a few large token holders. Which consensus-related risk is the regulator most likely to flag?

Stake centralization leading to governance capture

A cross-border remittance network uses a permissioned blockchain with a PBFT-based consensus. A new regulator asks how the network prevents a single node from unilaterally altering a transaction record. What should the network operator explain?

The network is centralized, so the operator has full control.

PBFT requires a supermajority of nodes to agree on every state change, so a single node cannot alter a record.

The network uses cryptographic hashes to make all records immutable.

The network uses Proof of Stake to penalize malicious nodes.

A consortium of 15 banks wants to build a shared interbank settlement ledger. They need finality within seconds, high throughput, and the ability to tolerate up to 4 faulty members. Which consensus model best meets these requirements?

Delegated Proof of Stake (DPoS)

Practical Byzantine Fault Tolerance (PBFT)

How does a consensus mechanism improve the reliability of a distributed financial system?

By requiring all nodes to be online at all times to process transactions

By preventing any node from ever making a mistake in transaction validation

By using a single central server to validate all transactions quickly

By ensuring that the system continues to operate correctly even if some nodes fail or act maliciously

EC-CouncilBlockchain Fintech Certification

Domain 2Objective 3

Consensus Models in Financial Systems BFC Practice Questions (Page 2)

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

35questions here

7free pages

5concepts

Questions 6–10

6foundation · easy
How can a consensus model impact the auditability of a financial system?
Select an answer first
7application · medium
A financial regulator is reviewing a blockchain-based settlement system that uses Proof of Stake. The regulator is concerned about the concentration of voting power among a few large token holders. Which consensus-related risk is the regulator most likely to flag?
Select an answer first
8application · medium
A cross-border remittance network uses a permissioned blockchain with a PBFT-based consensus. A new regulator asks how the network prevents a single node from unilaterally altering a transaction record. What should the network operator explain?
Select an answer first
9application · medium
A consortium of 15 banks wants to build a shared interbank settlement ledger. They need finality within seconds, high throughput, and the ability to tolerate up to 4 faulty members. Which consensus model best meets these requirements?
Select an answer first
10foundation · easy
How does a consensus mechanism improve the reliability of a distributed financial system?
Select an answer first

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