Which consensus mechanism is primarily based on participants demonstrating ownership of a digital asset to validate transactions?

Practical Byzantine Fault Tolerance (PBFT)

A blockchain startup is designing a new platform for decentralized lending. They need to balance the need for high transaction throughput with the desire for broad community governance. They are considering Proof of Stake (PoS) and Delegated Proof of Stake (DPoS). The team is concerned that DPoS could lead to a small group of delegates controlling the network, but they also worry that PoS might not be fast enough. What is the most effective way to address this trade-off?

Choose PoS and accept lower throughput, as decentralization is more important than speed for a lending platform.

Choose a hybrid model that uses DPoS for block production but implements strong governance mechanisms, such as frequent elections and the ability to vote out delegates.

Choose PoS because it allows all token holders to participate in consensus, ensuring maximum decentralization and governance.

Choose DPoS because it provides the highest throughput and allows users to vote for delegates, ensuring good governance.

A cryptocurrency exchange is evaluating a public blockchain for a new digital asset. The asset must be highly resistant to 51% attacks and have a proven track record of security. The exchange is less concerned about energy consumption. Which consensus mechanism should they select?

Practical Byzantine Fault Tolerance (PBFT)

In Proof of Authority (PoA), what determines a node's right to validate transactions?

The number of tokens it holds in a wallet

Its verified identity and reputation

The amount of cryptocurrency it stakes

What is a key advantage of Proof of Stake (PoS) compared to Proof of Work (PoW)?

It requires no initial investment from validators

It is significantly more energy-efficient because it does not require intensive computation

It provides absolute finality immediately after a block is created

It allows anyone to become a validator without any conditions

EC-CouncilBlockchain Fintech Certification

Domain 2Objective 2

Types of Consensus Mechanisms BFC Practice Questions (Page 3)

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

23questions here

5free pages

8concepts

Questions 11–15

11foundation · easy
Which consensus mechanism is primarily based on participants demonstrating ownership of a digital asset to validate transactions?
Select an answer first
12expert · hard
A blockchain startup is designing a new platform for decentralized lending. They need to balance the need for high transaction throughput with the desire for broad community governance. They are considering Proof of Stake (PoS) and Delegated Proof of Stake (DPoS). The team is concerned that DPoS could lead to a small group of delegates controlling the network, but they also worry that PoS might not be fast enough. What is the most effective way to address this trade-off?
Select an answer first
13application · medium
A cryptocurrency exchange is evaluating a public blockchain for a new digital asset. The asset must be highly resistant to 51% attacks and have a proven track record of security. The exchange is less concerned about energy consumption. Which consensus mechanism should they select?
Select an answer first
14foundation · easy
In Proof of Authority (PoA), what determines a node's right to validate transactions?
Select an answer first
15foundation · easy
What is a key advantage of Proof of Stake (PoS) compared to Proof of Work (PoW)?
Select an answer first

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