A decentralized exchange (DEX) is experiencing high gas costs and slow trades on Ethereum. The team is evaluating sharding and rollups. They need to maintain composability with existing DeFi protocols. Which solution is more suitable and why?

Neither, because DeFi cannot scale

Both are equally suitable for composability

Rollups, because they maintain composability with Ethereum's existing smart contracts

Sharding, because it increases throughput without changing the execution environment

A retail company wants to implement a blockchain for loyalty points. They need a public network with high decentralization, but they also want to minimize transaction costs for millions of small transactions. Which platform is most suitable?

A private sidechain with a centralized operator

Hyperledger Fabric with a permissioned network

A layer-2 solution on Ethereum, such as an optimistic rollup

Ethereum mainnet with ERC-20 tokens

A real-estate company wants to tokenize property ownership. They need a public network with high security and the ability to handle complex smart contracts for fractional ownership. Which platform is most suitable?

Ethereum mainnet with ERC-721 tokens

Hyperledger Fabric with private data collections

A blockchain-based land registry is experiencing slow transaction times because every node must validate and store the entire history of all property transfers. The storage requirement is growing rapidly. Which scalability solution is most appropriate?

Switch to a proof-of-work consensus

Implement state pruning and use a layer-2 solution for frequent transfers

A global remittance company needs to process 2,000 transactions per second (TPS) with finality in under 5 seconds. They are considering a permissioned blockchain with a small validator set and a public blockchain with sharding. Which trade-off should guide their decision?

Permissioned blockchain is always more scalable than any public blockchain

Public blockchain with sharding will have lower latency than a permissioned network

Permissioned blockchain with a small validator set will likely meet TPS and finality but sacrifices decentralization and public auditability

Public sharded blockchain will always meet TPS and finality while maintaining full decentralization

EC-CouncilBlockchain Business Leader Certification

Domain 5Objective 3

Platform Selection, Interoperability, and Scalability BBLC Practice Questions (Page 4)

Part of the Blockchain Platforms and Ecosystem domain, which makes up ~10% of our current practice bank.

25questions here

5free pages

7concepts

Questions 16–20

16expert · hard
A decentralized exchange (DEX) is experiencing high gas costs and slow trades on Ethereum. The team is evaluating sharding and rollups. They need to maintain composability with existing DeFi protocols. Which solution is more suitable and why?
Select an answer first
17application · medium
A retail company wants to implement a blockchain for loyalty points. They need a public network with high decentralization, but they also want to minimize transaction costs for millions of small transactions. Which platform is most suitable?
Select an answer first
18application · medium
A real-estate company wants to tokenize property ownership. They need a public network with high security and the ability to handle complex smart contracts for fractional ownership. Which platform is most suitable?
Select an answer first
19application · medium
A blockchain-based land registry is experiencing slow transaction times because every node must validate and store the entire history of all property transfers. The storage requirement is growing rapidly. Which scalability solution is most appropriate?
Select an answer first
20expert · hard
A global remittance company needs to process 2,000 transactions per second (TPS) with finality in under 5 seconds. They are considering a permissioned blockchain with a small validator set and a public blockchain with sharding. Which trade-off should guide their decision?
Select an answer first

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