A consortium of universities wants to share academic credentials across institutions using blockchain. They need to ensure that credentials are tamper-proof and can be verified by employers, but they also want to keep student personal data private. Which approach should they take?

Use a private blockchain with no external verification

Encrypt the data on-chain and share the decryption key publicly

Store only a hash of the credential on-chain and keep the actual data off-chain

Store all credential data on a public blockchain

A global supply chain network uses a public blockchain but faces high latency and fees during peak load. They want to increase throughput without changing the main chain's consensus rules. Which solution should they adopt?

Deploy a layer-2 solution such as rollups or state channels

Increase the block size limit on the main chain

Implement sharding to split the network into multiple partitions

Switch to a different consensus algorithm on the main chain

A retail company wants to implement a blockchain-based loyalty program. They need to handle high transaction volumes during peak shopping seasons and keep transaction costs low. They also want to use a platform with a large developer community. Which platform characteristic is most important?

A governance model that allows any user to become a validator

A native token that is listed on major exchanges

A block time of exactly 10 minutes

A consensus mechanism that provides high throughput and low fees

A consortium of banks wants to use a blockchain for interbank settlements. They require high throughput, low latency, and finality. They are considering a sharded public blockchain and a permissioned blockchain with a voting-based consensus. The public blockchain offers better decentralization, but the permissioned chain offers better performance. Which factor should be the deciding factor?

The need to avoid any consensus mechanism

The desire to use a public cryptocurrency

The need for decentralization over performance

The regulatory requirement for a permissioned network

A developer is choosing a smart contract platform for a decentralized finance (DeFi) application. They need high security, a large ecosystem of existing contracts, and the ability to upgrade contracts. Which platform is most appropriate?

Ethereum with a mature ecosystem and upgradeable proxy patterns

A custom blockchain with custom smart contracts

Hyperledger Fabric with Go chaincode

EC-CouncilBlockchain Business Leader Certification

Domain 9Objective 1

Innovations in Blockchain Architecture and Smart Contract Platforms BBLC Practice Questions (Page 7)

Part of the Advanced Concepts and Enterprise Blockchain Strategy domain, which makes up ~13% of our current practice bank.

35questions here

7free pages

3concepts

Questions 31–35

31application · medium
A consortium of universities wants to share academic credentials across institutions using blockchain. They need to ensure that credentials are tamper-proof and can be verified by employers, but they also want to keep student personal data private. Which approach should they take?
Select an answer first
32application · medium
A global supply chain network uses a public blockchain but faces high latency and fees during peak load. They want to increase throughput without changing the main chain's consensus rules. Which solution should they adopt?
Select an answer first
33application · medium
A retail company wants to implement a blockchain-based loyalty program. They need to handle high transaction volumes during peak shopping seasons and keep transaction costs low. They also want to use a platform with a large developer community. Which platform characteristic is most important?
Select an answer first
34expert · hard
A consortium of banks wants to use a blockchain for interbank settlements. They require high throughput, low latency, and finality. They are considering a sharded public blockchain and a permissioned blockchain with a voting-based consensus. The public blockchain offers better decentralization, but the permissioned chain offers better performance. Which factor should be the deciding factor?
Select an answer first
35application · medium
A developer is choosing a smart contract platform for a decentralized finance (DeFi) application. They need high security, a large ecosystem of existing contracts, and the ability to upgrade contracts. Which platform is most appropriate?
Select an answer first

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