A company is evaluating a federated bridge to move assets between a private enterprise blockchain and a public network. The security team is concerned about validator collusion. Which additional control would most directly reduce the risk of collusion among the bridge's validators?

Ensure validators are operated by independent organizations with conflicting interests and stake slashing

Use a single trusted third-party auditor to verify all transactions

Increase the number of confirmations required on the source chain

Require a supermajority of 80% of validators to approve any transfer

A developer is choosing between Polkadot and Cosmos for a new interoperable blockchain project. The project requires the ability to have specialized chains with different consensus mechanisms but also wants to share security across the network. Which platform is more suitable?

Neither platform supports specialized chains with different consensus mechanisms.

Both platforms are identical in security and interoperability.

Cosmos, because each zone has its own validator set and is fully sovereign.

Polkadot, because its relay chain provides shared security for connected parachains.

What is the Inter-Blockchain Communication (IBC) protocol primarily designed for?

Providing a single consensus algorithm for all blockchains

Storing all blockchain data in a single cloud server

Creating a new cryptocurrency that can be used on all blockchains

Enabling different blockchains to exchange data and tokens with each other in a standardized way

Two users want to exchange Bitcoin for Ethereum without using a centralized exchange. They are concerned about one party not fulfilling the trade. Which mechanism ensures that either both transactions happen or neither does?

A federated bridge that locks Bitcoin and mints wrapped Ethereum

A multi-signature escrow account controlled by a trusted third party

A relay chain that finalizes both transactions in the same block

A hash time-locked contract (HTLC) on both chains with the same secret

Why is blockchain interoperability considered important for the broader adoption of decentralized applications?

It allows users to access services and liquidity across multiple blockchain networks without needing separate accounts

It ensures that every blockchain has the same native token

It guarantees that all blockchains will have identical consensus algorithms

It eliminates the need for cryptographic hashing in blockchain networks

EC-CouncilBlockchain Developer Certification

Domain 9Objective 4

Interoperability Innovations BDC Practice Questions (Page 1)

Part of the Advanced Concepts and Future Innovations domain, which makes up ~12% of our current practice bank.

54questions here

11free pages

6concepts

Questions 1–5

1application · medium
A company is evaluating a federated bridge to move assets between a private enterprise blockchain and a public network. The security team is concerned about validator collusion. Which additional control would most directly reduce the risk of collusion among the bridge's validators?
Select an answer first
2application · medium
A developer is choosing between Polkadot and Cosmos for a new interoperable blockchain project. The project requires the ability to have specialized chains with different consensus mechanisms but also wants to share security across the network. Which platform is more suitable?
Select an answer first
3foundation · easy
What is the Inter-Blockchain Communication (IBC) protocol primarily designed for?
Select an answer first
4application · medium
Two users want to exchange Bitcoin for Ethereum without using a centralized exchange. They are concerned about one party not fulfilling the trade. Which mechanism ensures that either both transactions happen or neither does?
Select an answer first
5foundation · easy
Why is blockchain interoperability considered important for the broader adoption of decentralized applications?
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.