A blockchain network wants to increase transaction throughput by allowing different groups of nodes to process different subsets of transactions simultaneously. They also want to reduce the storage burden on individual nodes. Which approach directly achieves this?

Increasing block size to allow more transactions per block.

Using a state channel network to move transactions off-chain.

Implementing a sidechain to handle some transactions.

Sharding, which partitions the blockchain into shards that process transactions in parallel and store only a portion of the state.

What is the core idea behind rollups?

Using a sidechain with its own consensus

Creating a separate blockchain for each user

Increasing the block size of the main chain

Bundling multiple transactions into a single batch that is submitted to the main chain

A fintech startup wants to offer a high-throughput payment service but needs to maintain interoperability with the main blockchain for asset transfers. They are willing to accept a different consensus mechanism on the secondary chain and periodic checkpointing to the main chain. Which scaling approach fits this description?

An optimistic rollup that posts batched transactions to the main chain with fraud proofs.

A state channel network that settles only final balances on the main chain.

A Plasma child chain that uses fraud proofs to secure funds on the main chain.

A sidechain that runs its own consensus and communicates with the main chain via a two-way peg.

What is the main purpose of off-chain scaling solutions?

To increase the block size of the main blockchain

To create a new cryptocurrency with faster block times

To reduce the number of transactions that need to be processed on the main chain

To replace the consensus algorithm with a more efficient one

In a state channel, when are transactions recorded on the main blockchain?

After a certain number of transactions are accumulated

Every transaction is recorded immediately

Only when the channel is opened and closed

Transactions are never recorded on-chain

EC-CouncilBlockchain Developer Certification

Domain 1Objective 7

Blockchain Scaling Solutions BDC Practice Questions (Page 5)

Part of the Blockchain Fundamentals and Architecture domain, which makes up ~14% of our current practice bank.

62questions here

13free pages

13concepts

Questions 21–25

21application · medium
A blockchain network wants to increase transaction throughput by allowing different groups of nodes to process different subsets of transactions simultaneously. They also want to reduce the storage burden on individual nodes. Which approach directly achieves this?
Select an answer first
22foundation · easy
What is the core idea behind rollups?
Select an answer first
23application · medium
A fintech startup wants to offer a high-throughput payment service but needs to maintain interoperability with the main blockchain for asset transfers. They are willing to accept a different consensus mechanism on the secondary chain and periodic checkpointing to the main chain. Which scaling approach fits this description?
Select an answer first
24foundation · easy
What is the main purpose of off-chain scaling solutions?
Select an answer first
25foundation · easy
In a state channel, when are transactions recorded on the main blockchain?
Select an answer first

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