What is the primary purpose of Segregated Witness (SegWit) in Bitcoin?

To replace Proof of Work with Proof of Stake

To reduce the block time from 10 minutes to 1 minute

To increase block capacity by separating transaction signatures from the transaction data

To increase the block size limit to 8 MB

A payment processor is experiencing high fees and slow confirmations during peak usage. They want to reduce costs for their customers without sacrificing security. Which solution is most appropriate?

Reduce the number of confirmations required to 1 block.

Use the Lightning Network to batch transactions off-chain and settle periodically.

Increase the block size to 2 MB to allow more transactions per block.

Ask customers to use a different cryptocurrency with lower fees.

A developer is explaining Bitcoin's consensus mechanism to a client. The client asks why miners must expend computational effort to add a block. Which response accurately explains the purpose of Proof of Work?

It reduces the energy consumption of the network by limiting the number of miners.

It makes it economically costly to attack the network, aligning incentives for honest behavior.

It ensures that all miners have equal opportunity to add blocks regardless of their hardware.

It guarantees that all transactions are confirmed within 10 minutes.

A developer is designing a payment system that must handle thousands of transactions per second while using Bitcoin as the settlement layer. Which of the following approaches are viable? Select all that apply.

Use the Lightning Network for off-chain payments, settling net balances on-chain periodically.

Adopt sharding to split the Bitcoin network into multiple parallel chains.

Implement a sidechain that processes transactions quickly and anchors to Bitcoin.

Increase the block size limit to 100 MB to accommodate more transactions per block.

Use SegWit to increase block capacity by moving signature data out of the block.

EC-CouncilBlockchain Developer Certification

Domain 3Objective 3

Bitcoin Mining, Forking, and Scalability Solutions BDC Practice Questions (Page 2)

Part of the Bitcoin and Consensus Mechanisms domain, which makes up ~12% of our current practice bank.

54questions here

11free pages

13concepts

Questions 6–10

6foundation · easy
What is the primary purpose of Segregated Witness (SegWit) in Bitcoin?
Select an answer first
7application · medium
A payment processor is experiencing high fees and slow confirmations during peak usage. They want to reduce costs for their customers without sacrificing security. Which solution is most appropriate?
Select an answer first
8application · medium
A developer is explaining Bitcoin's consensus mechanism to a client. The client asks why miners must expend computational effort to add a block. Which response accurately explains the purpose of Proof of Work?
Select an answer first
9expert · hard · select all that apply
A developer is designing a payment system that must handle thousands of transactions per second while using Bitcoin as the settlement layer. Which of the following approaches are viable? Select all that apply.
Select an answer first
10foundation · easy
What is the block reward for a miner who successfully mines a Bitcoin block in 2024?
Select an answer first

Finished these 5 questions?

Review the revealed explanations, or continue through the curriculum.

Next 5 questions →Back to BDC

Free Basic Practice is a study aid with revealable answers — not a scored exam. Examers.io is independent and not affiliated with or endorsed by EC-Council. “BDC” is a trademark of its owner, used for identification only.